# Al–Cu system

> Al–Cu system: 107 accepted literature values (invariant reaction 80, phase equilibrium 22, phase transition 5) and 5 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/AL-CU.html · Markdown: https://data.orchid-project.org/systems/AL-CU.md

107 accepted literature values from 3 paper(s) (experimental 50, model 54, unspecified 3); 5 calculated phase diagram(s). 7 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/AL-CU.json) · [CSV](https://data.orchid-project.org/systems/AL-CU.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#AL-CU) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-02Mie.json) · [phases (23)](https://data.orchid-project.org/phases/pages/AL-CU.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/AL-CU.html) · [Markdown](https://data.orchid-project.org/systems/AL-CU.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 50 |
| model | 54 |
| unspecified | 3 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 80 |
| phase transition | 5 |
| phase equilibrium | 22 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| AlCu-02Mie.tdb | J. Miettinen, Metall. Mater. Trans. A, 33A, 1639-48(2002). [doi:10.1007/s11661-002-0173-7](https://doi.org/10.1007/s11661-002-0173-7) | `3831fc8d892fc0774d0046cd1457b5b070abf879e8bade51373a758f8eca21c1` | [viewer](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-02Mie.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlCu-02Mie.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlCu-02Mie.json) |
| AlCu-04Wit.tdb | V. Witusiewicz, U. Hecht, S.G. Fries, S. Rex, J. Alloys Compd., 385, 133-43(2004). [doi:10.1016/j.jallcom.2004.04.126](https://doi.org/10.1016/j.jallcom.2004.04.126) | `7239fc4da5e79f401db2a379dc38258c2554f6de7a1fc7d74b57bf391fba19f9` | [viewer](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-04Wit.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlCu-04Wit.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlCu-04Wit.json) |
| AlCu-15Lia.tdb | S.-M. Liang, R. Schmid-Fetzer, Calphad, 51, 252-60(2015). [doi:10.1016/j.calphad.2015.10.004](https://doi.org/10.1016/j.calphad.2015.10.004) | `cc9baa9f2479820ca73d3b8655ba619569f8f6e78c02539c51e79dd98d73dd74` | [viewer](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-15Lia.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlCu-15Lia.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlCu-15Lia.json) |
| AlCu-21Kro.tdb | A. Kroupa, O. Zobac, K.W. Richter, J. Mater. Sci., 56, 3430-43(2021). [doi:10.1007/s10853-020-05423-7](https://doi.org/10.1007/s10853-020-05423-7) | `bd06016e51db2bef626a65b9f3a00b660e9b1c8a7c8c10e4d0ad8867809c62e4` | [viewer](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-21Kro.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlCu-21Kro.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlCu-21Kro.json) |
| AlCu-98Sau-LB.tdb | N. Saunders, COST 507, Final report round 2, 1998 | `bed1eea6f6cf10b8c9b80e3c1bc04f3c129893a8205650098d464a12e718d0c9` | [viewer](https://orchid-project.org/phase-diagrams/#AL-CU/AlCu-98Sau-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/AlCu-98Sau-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/AlCu-98Sau-LB.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| AlCu-02Mie.tdb | 1309.88 | BCC_A2 (x(Cu) 0.81606) + LIQUID (x(Cu) 0.82883) + FCC_A1 (x(Cu) 0.84683) |
| AlCu-02Mie.tdb | 1293.77 | LIQUID (x(Cu) 0.65769) + AL4CU9_GAMMA (x(Cu) 0.67532) + BCC_A2 (x(Cu) 0.68151) |
| AlCu-02Mie.tdb | 1266.67 | LIQUID (x(Cu) 0.609) + BCC_A2 (x(Cu) 0.64369) + AL4CU9_GAMMA (x(Cu) 0.66064) |
| AlCu-02Mie.tdb | 1015.23 | LIQUID (x(Cu) 0.28591) + HCP_A3 (x(Cu) 0.37287) + BCC_A2 (x(Cu) 0.4073) |
| AlCu-02Mie.tdb | 881.09 | FCC_A1 (x(Cu) 0.05384) + LIQUID (x(Cu) 0.11317) + HCP_A3 (x(Cu) 0.26592) |
| AlCu-02Mie.tdb | 840.04 | AL4CU9_GAMMA (x(Cu) 0.70148) + BCC_A2 (x(Cu) 0.76202) + FCC_A1 (x(Cu) 0.80278) |
| AlCu-02Mie.tdb | 747.05 | FCC_A1 (x(Cu) 0.04188) + HCP_A3 (x(Cu) 0.27711) + BCC_A2 (x(Cu) 0.32085) |
| AlCu-04Wit.tdb | 1309.3 | BCC_A2 (x(Cu) 0.80735) + LIQUID (x(Cu) 0.81688) + FCC_A1 (x(Cu) 0.83661) |
| AlCu-04Wit.tdb | 1292.18 | LIQUID (x(Cu) 0.67896) + AL4CU9_D82 (x(Cu) 0.68444) + BCC_A2 (x(Cu) 0.69914) |
| AlCu-04Wit.tdb | 1232.3 | LIQUID (x(Cu) 0.60403) + BCC_A2 (x(Cu) 0.64408) + AL4CU9_D82 (x(Cu) 0.66738) |
| AlCu-04Wit.tdb | 1149.87 | BCC_A2 (x(Cu) 0.62518) + AL4CU9_D83 (x(Cu) 0.64702) + AL4CU9_D82 (x(Cu) 0.65575) |
| AlCu-04Wit.tdb | 1124.24 | LIQUID (x(Cu) 0.52) + ALCU_B82 (x(Cu) 0.57657) + BCC_A2 (x(Cu) 0.58494) |
| AlCu-04Wit.tdb | 1109.55 | ALCU_B82 (x(Cu) 0.58042) + BCC_A2 (x(Cu) 0.60219) + AL4CU9_D83 (x(Cu) 0.63537) |
| AlCu-04Wit.tdb | 1054.45 | AL4CU9_D83 (x(Cu) 0.68679) + AL4CU9_D82 (x(Cu) 0.6888) + BCC_A2 (x(Cu) 0.73202) |
| AlCu-04Wit.tdb | 959.78 | ALCU_B82 (x(Cu) 0.57153) + AL2CU3 (x(Cu) 0.6) + AL4CU9_D83 (x(Cu) 0.62784) |
| AlCu-04Wit.tdb | 898.11 | LIQUID (x(Cu) 0.34904) + ALCU_ETA (x(Cu) 0.50971) + ALCU_B82 (x(Cu) 0.54073) |
| AlCu-04Wit.tdb | 868.85 | LIQUID (x(Cu) 0.32199) + AL2CU_C16 (x(Cu) 0.32878) + ALCU_ETA (x(Cu) 0.50584) |
| AlCu-04Wit.tdb | 855.85 | AL9CU11 (x(Cu) 0.55) + ALCU_B82 (x(Cu) 0.55605) + AL2CU3 (x(Cu) 0.6) |
| AlCu-04Wit.tdb | 852.41 | ALCU_ETA (x(Cu) 0.51097) + ALCU_B82 (x(Cu) 0.54252) + AL9CU11 (x(Cu) 0.55) |
| AlCu-04Wit.tdb | 837.81 | AL4CU9_D83 (x(Cu) 0.69127) + BCC_A2 (x(Cu) 0.77116) + FCC_A1 (x(Cu) 0.7948) |
| AlCu-04Wit.tdb | 820.61 | FCC_A1 (x(Cu) 0.02536) + LIQUID (x(Cu) 0.17473) + AL2CU_C16 (x(Cu) 0.31756) |
| AlCu-15Lia.tdb | 1308.24 | BCC_A2 (x(Cu) 0.80815) + LIQUID (x(Cu) 0.81797) + FCC_A1 (x(Cu) 0.83749) |
| AlCu-15Lia.tdb | 1286.31 | LIQUID (x(Cu) 0.66927) + GAMMA_D82 (x(Cu) 0.688) + BCC_A2 (x(Cu) 0.69177) |
| AlCu-15Lia.tdb | 1232.41 | LIQUID (x(Cu) 0.60403) + BCC_A2 (x(Cu) 0.64402) + GAMMA_D82 (x(Cu) 0.6654) |
| AlCu-15Lia.tdb | 1145.67 | BCC_A2 (x(Cu) 0.6108) + GAMMA_D83 (x(Cu) 0.64518) + GAMMA_D82 (x(Cu) 0.64857) |
| AlCu-15Lia.tdb | 1121.88 | ALCU_B82 (x(Cu) 0.59651) + BCC_A2 (x(Cu) 0.59776) + GAMMA_D83 (x(Cu) 0.6397) |
| AlCu-15Lia.tdb | 1119.71 | LIQUID (x(Cu) 0.51685) + BCC_A2 (x(Cu) 0.58279) + ALCU_B82 (x(Cu) 0.59092) |
| AlCu-15Lia.tdb | 1063.82 | GAMMA_D83 (x(Cu) 0.69338) + GAMMA_D82 (x(Cu) 0.69798) + BCC_A2 (x(Cu) 0.73794) |
| AlCu-15Lia.tdb | 957.8 | ALCU_B82 (x(Cu) 0.58803) + AL5CU8 (x(Cu) 0.61538) + GAMMA_D83 (x(Cu) 0.63036) |
| AlCu-15Lia.tdb | 898.18 | LIQUID (x(Cu) 0.34582) + ALCU_ETA_1 (x(Cu) 0.51225) + ALCU_B82 (x(Cu) 0.54133) |
| AlCu-15Lia.tdb | 871.03 | ALCU_ETA_1 (x(Cu) 0.51178) + ALCU_ETA_2 (x(Cu) 0.52) + ALCU_B82 (x(Cu) 0.5403) |
| AlCu-15Lia.tdb | 866.41 | LIQUID (x(Cu) 0.31855) + AL2CU_C16 (x(Cu) 0.32853) + ALCU_ETA_1 (x(Cu) 0.50934) |
| AlCu-15Lia.tdb | 853.57 | ALCU_ETA_2 (x(Cu) 0.52) + ALCU_B82 (x(Cu) 0.54156) + AL9CU11 (x(Cu) 0.55117) |
| AlCu-15Lia.tdb | 846.87 | AL2CU_C16 (x(Cu) 0.32935) + ALCU_ETA_1 (x(Cu) 0.50891) + ALCU_ETA_2 (x(Cu) 0.52) |
| AlCu-15Lia.tdb | 840.61 | GAMMA_D83 (x(Cu) 0.69906) + BCC_A2 (x(Cu) 0.77116) + FCC_A1 (x(Cu) 0.79478) |
| AlCu-15Lia.tdb | 830.82 | AL9CU11 (x(Cu) 0.5574) + ALCU_B82 (x(Cu) 0.57033) + AL5CU8 (x(Cu) 0.61538) |
| AlCu-15Lia.tdb | 820.86 | FCC_A1 (x(Cu) 0.02503) + LIQUID (x(Cu) 0.177) + AL2CU_C16 (x(Cu) 0.31753) |
| AlCu-15Lia.tdb | 636.16 | GAMMA_D83 (x(Cu) 0.69278) + ALCU3_D022 (x(Cu) 0.77) + FCC_A1 (x(Cu) 0.80715) |
| AlCu-21Kro.tdb | 1315.84 | BCC_A2 (x(Cu) 0.80898) + LIQUID (x(Cu) 0.8215) + FCC_A1 (x(Cu) 0.83856) |
| AlCu-21Kro.tdb | 1268.2 | LIQUID (x(Cu) 0.62527) + GAMMA_D82 (x(Cu) 0.65832) + BCC_A2 (x(Cu) 0.65873) |
| AlCu-21Kro.tdb | 1215.25 | LIQUID (x(Cu) 0.57877) + BCC_A2 (x(Cu) 0.62608) + GAMMA_D82 (x(Cu) 0.64818) |
| AlCu-21Kro.tdb | 1144.12 | BCC_A2 (x(Cu) 0.60921) + GAMMA_D83 (x(Cu) 0.63669) + GAMMA_D82 (x(Cu) 0.64361) |
| AlCu-21Kro.tdb | 1119.99 | BCC_A2 (x(Cu) 0.59091) + ALCU_B82 (x(Cu) 0.60043) + GAMMA_D83 (x(Cu) 0.63081) |
| AlCu-21Kro.tdb | 1115.47 | LIQUID (x(Cu) 0.51473) + BCC_A2 (x(Cu) 0.58228) + ALCU_B82 (x(Cu) 0.59685) |
| AlCu-21Kro.tdb | 1050.72 | GAMMA_D83 (x(Cu) 0.67562) + GAMMA_D82 (x(Cu) 0.69009) + BCC_A2 (x(Cu) 0.72864) |
| AlCu-21Kro.tdb | 955.01 | ALCU_B82 (x(Cu) 0.58413) + AL5CU8 (x(Cu) 0.60346) + GAMMA_D83 (x(Cu) 0.62085) |
| AlCu-21Kro.tdb | 897.67 | LIQUID (x(Cu) 0.3624) + ALCU_ETA_HT (x(Cu) 0.5165) + ALCU_B82 (x(Cu) 0.5491) |
| AlCu-21Kro.tdb | 871.89 | ALCU_ETA_HT (x(Cu) 0.51557) + ALCU_ETA_LT (x(Cu) 0.52868) + ALCU_B82 (x(Cu) 0.54824) |
| AlCu-21Kro.tdb | 866.11 | LIQUID (x(Cu) 0.33538) + AL2CU_C16 (x(Cu) 0.33668) + ALCU_ETA_HT (x(Cu) 0.51263) |
| AlCu-21Kro.tdb | 851.03 | AL3CU4_HT (x(Cu) 0.561) + ALCU_B82 (x(Cu) 0.56589) + AL5CU8 (x(Cu) 0.59596) |
| AlCu-21Kro.tdb | 851.03 | AL3CU4_HT (x(Cu) 0.561) + ALCU_B82 (x(Cu) 0.56588) + AL5CU8 (x(Cu) 0.59596) |
| AlCu-21Kro.tdb | 846.77 | AL2CU_C16 (x(Cu) 0.3367) + ALCU_ETA_HT (x(Cu) 0.51175) + ALCU_ETA_LT (x(Cu) 0.52065) |
| AlCu-21Kro.tdb | 841.09 | ALCU_ETA_LT (x(Cu) 0.53157) + ALCU_B82 (x(Cu) 0.5514) + AL3CU4_HT (x(Cu) 0.561) |
| AlCu-21Kro.tdb | 841.09 | ALCU_ETA_LT (x(Cu) 0.53158) + ALCU_B82 (x(Cu) 0.55141) + AL3CU4_HT (x(Cu) 0.561) |
| AlCu-21Kro.tdb | 840.58 | GAMMA_D83 (x(Cu) 0.68976) + BCC_A2 (x(Cu) 0.77427) + FCC_A1 (x(Cu) 0.79752) |
| AlCu-21Kro.tdb | 833.46 | AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) + AL5CU8 (x(Cu) 0.59816) |
| AlCu-21Kro.tdb | 833.46 | AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) + AL5CU8 (x(Cu) 0.59817) |
| AlCu-21Kro.tdb | 833.46 | AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) + AL5CU8 (x(Cu) 0.5982) |
| AlCu-21Kro.tdb | 821.67 | FCC_A1 (x(Cu) 0.02129) + LIQUID (x(Cu) 0.18101) + AL2CU_C16 (x(Cu) 0.31631) |
| AlCu-21Kro.tdb | 645.25 | ALCU_ETA_LT (x(Cu) 0.51835) + AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) |
| AlCu-21Kro.tdb | 645.25 | ALCU_ETA_LT (x(Cu) 0.51832) + AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) |
| AlCu-21Kro.tdb | 645.25 | ALCU_ETA_LT (x(Cu) 0.51831) + AL3CU4_HT (x(Cu) 0.561) + AL3CU4_LT (x(Cu) 0.573) |
| AlCu-21Kro.tdb | 626.61 | GAMMA_D83 (x(Cu) 0.69317) + ALCU3_D022 (x(Cu) 0.77) + FCC_A1 (x(Cu) 0.82081) |
| AlCu-98Sau-LB.tdb | 1309.28 | BCC_A2 (x(Cu) 0.80735) + LIQUID (x(Cu) 0.81758) + FCC_A1 (x(Cu) 0.83661) |
| AlCu-98Sau-LB.tdb | 1293.41 | LIQUID (x(Cu) 0.67866) + AL4CU9_D82 (x(Cu) 0.68438) + BCC_A2 (x(Cu) 0.69878) |
| AlCu-98Sau-LB.tdb | 1232.38 | LIQUID (x(Cu) 0.60388) + BCC_A2 (x(Cu) 0.6441) + AL4CU9_D82 (x(Cu) 0.66739) |
| AlCu-98Sau-LB.tdb | 1150.5 | BCC_A2 (x(Cu) 0.62532) + AL4CU9_D83 (x(Cu) 0.64706) + AL4CU9_D82 (x(Cu) 0.65585) |
| AlCu-98Sau-LB.tdb | 1124.07 | LIQUID (x(Cu) 0.51961) + ALCU_B82 (x(Cu) 0.57665) + BCC_A2 (x(Cu) 0.5853) |
| AlCu-98Sau-LB.tdb | 1109.32 | ALCU_B82 (x(Cu) 0.58046) + BCC_A2 (x(Cu) 0.60236) + AL4CU9_D83 (x(Cu) 0.63548) |
| AlCu-98Sau-LB.tdb | 1054.21 | AL4CU9_D83 (x(Cu) 0.68683) + AL4CU9_D82 (x(Cu) 0.68881) + BCC_A2 (x(Cu) 0.73204) |
| AlCu-98Sau-LB.tdb | 959.7 | ALCU_B82 (x(Cu) 0.57152) + AL2CU3 (x(Cu) 0.6) + AL4CU9_D83 (x(Cu) 0.62782) |
| AlCu-98Sau-LB.tdb | 898.08 | LIQUID (x(Cu) 0.34567) + ALCU_ETA (x(Cu) 0.50971) + ALCU_B82 (x(Cu) 0.54073) |
| AlCu-98Sau-LB.tdb | 869.01 | LIQUID (x(Cu) 0.31857) + AL2CU_C16 (x(Cu) 0.32877) + ALCU_ETA (x(Cu) 0.50585) |
| AlCu-98Sau-LB.tdb | 855.85 | AL9CU11 (x(Cu) 0.55) + ALCU_B82 (x(Cu) 0.55605) + AL2CU3 (x(Cu) 0.6) |
| AlCu-98Sau-LB.tdb | 852.41 | ALCU_ETA (x(Cu) 0.51097) + ALCU_B82 (x(Cu) 0.54252) + AL9CU11 (x(Cu) 0.55) |
| AlCu-98Sau-LB.tdb | 837.88 | AL4CU9_D83 (x(Cu) 0.69121) + BCC_A2 (x(Cu) 0.77116) + FCC_A1 (x(Cu) 0.79481) |
| AlCu-98Sau-LB.tdb | 820.74 | FCC_A1 (x(Cu) 0.02539) + LIQUID (x(Cu) 0.17485) + AL2CU_C16 (x(Cu) 0.31755) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/AL/AL-CU.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/AL/AL-CU.json) · [CALPHAD hull AlCu-02Mie](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-CU--AlCu-02Mie.json) · [CALPHAD hull AlCu-04Wit](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-CU--AlCu-04Wit.json) · [CALPHAD hull AlCu-15Lia](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-CU--AlCu-15Lia.json) · [CALPHAD hull AlCu-98Sau-LB](https://data.orchid-project.org/hulls/calphad-sgte/AL/AL-CU--AlCu-98Sau-LB.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Al–Cu system (80)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1315.85 | eutectic: liq -> β + (Cu) | liq: Cu 0.822; β: Cu 0.809; (Cu): Cu 0.839 | model | [1] Kroupa 2021 | Table 5, p. 11, row 4; `ORC-4C4GD4CNJR` |  |
| 1310.15 | Fcc-liquid-bcc | Fcc: Cu 0.847; L: Cu 0.829; bcc: Cu 0.816 | model | [2] Miettinen 2002 | Table III, p. 4, row 3; `ORC-U2GAQB566P` |  |
| 1309.3 | eutectic: Liquid -> bcc-A2 + fcc-A1 | Liquid: Cu 0.817; bcc-A2: Cu 0.807; fcc-A1: Cu 0.837 | model | [3] (ed.) 1998 | Table I, p. 48, row 7; `ORC-ZUBIVCD2DK` |  |
| 1309.15 | Fcc-liquid-bcc | Fcc: Cu 0.837; L: Cu 0.817; bcc: Cu 0.807 | model | [2] Miettinen 2002; _cites Ansara 1998_ | Table III, p. 4, row 2; `ORC-C4FEGL5UXL` |  |
| 1308.25 | eutectic: liq -> β + (Cu) |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 6; `ORC-S7DEG2OZIF` |  |
| 1308.15 | eutectic: liq -> β + (Cu) |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 5; `ORC-YVESVSY4QP` |  |
| 1305.15 | Fcc-liquid-bcc | Fcc: Cu 0.844; L: Cu 0.83; bcc: Cu 0.82 | experimental | [2] Miettinen 2002; _cites Murray 1985_ [doi](https://doi.org/10.1179/imr.1985.30.1.211) | Table III, p. 4, row 1; `ORC-V2NQDFSVTY` |  |
| 1295.15 | Bcc-γ-liquid | Bcc: Cu 0.676; γ: Cu 0.674; L: Cu 0.661 | experimental | [2] Miettinen 2002; _cites Murray 1985_ [doi](https://doi.org/10.1179/imr.1985.30.1.211) | Table III, p. 4, row 4; `ORC-Y4MYWFTXPL` |  |
| 1294.15 | Bcc-γ-liquid | Bcc: Cu 0.682; γ: Cu 0.675; L: Cu 0.658 | model | [2] Miettinen 2002 | Table III, p. 4, row 6; `ORC-NSHEVP47TP` |  |
| 1293.4 | peritectic: Liquid + bcc-A2 -> AlCu-γ(H) | Liquid: Cu 0.678; bcc-A2: Cu 0.698; AlCu-γ(H): Cu 0.684 | model | [3] (ed.) 1998 | Table I, p. 48, row 6; `ORC-X4JSAXE4VH` |  |
| 1293.15 | Bcc-γ-liquid | Bcc: Cu 0.698; γ: Cu 0.684; L: Cu 0.678 | model | [2] Miettinen 2002; _cites Ansara 1998_ | Table III, p. 4, row 5; `ORC-JRSSVUGTY6` |  |
| 1286.35 | liq + β -> γ |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 10; `ORC-CFVMVJDWAB` |  |
| 1268.15 | liq + β -> γ | liq: Cu 0.625; β: Cu 0.659; γ: Cu 0.658 | model | [1] Kroupa 2021 | Table 5, p. 11, row 7; `ORC-NM2ALIQ7UE` |  |
| 1266.15 | liq + β -> γ |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 9; `ORC-63EAM5QJ3U` |  |
| 1264.15 | liq + β -> γ |  | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 8; `ORC-H3VSPST7LF` |  |
| 1233.15 | liq + γ -> ε |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 13; `ORC-7QMMWQ4LVU` |  |
| 1232.45 | liq + γ -> ε |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 14; `ORC-PYZERH7M3R` |  |
| 1232.4 | peritectic: Liquid + AlCu-γ(H) -> bcc-A2 | Liquid: Cu 0.604; AlCu-γ(H): Cu 0.667; bcc-A2: Cu 0.644 | model | [3] (ed.) 1998 | Table I, p. 48, row 5; `ORC-VBB2I3SXMR` |  |
| 1232.15 | liq + γ -> ε |  | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 12; `ORC-IQJE4K67IP` |  |
| 1215.25 | liq + γ -> ε | liq: Cu 0.579; γ: Cu 0.648; ε: Cu 0.626 | model | [1] Kroupa 2021 | Table 5, p. 11, row 11; `ORC-E6GFDXNTDR` |  |
| 1150.5 | peritectoid: bcc-A2 + AlCu-γ(H) -> AlCu-γ(D83) | bcc-A2: Cu 0.625; AlCu-γ(H): Cu 0.656; AlCu-γ(D83): Cu 0.647 | model | [3] (ed.) 1998 | Table I, p. 48, row 10; `ORC-PRVF2FFODH` |  |
| 1147.15 | γ + ε -> γ′ (ord.) |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 17; `ORC-Z7JOZ36GVD` |  |
| 1146.65 | γ + ε -> γ′ (ord.) |  | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 16; `ORC-GD7W34MTG2` |  |
| 1145.65 | γ + ε -> γ′ (ord.) |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 18; `ORC-6VIJ2G6ZZA` |  |
| 1144.15 | γ + ε -> γ′ (ord.) | γ: Cu 0.644; ε: Cu 0.609; γ′: Cu 0.637 | model | [1] Kroupa 2021 | Table 5, p. 11, row 15; `ORC-DSZ25LRI2J` |  |
| 1124 | peritectic: Liquid + bcc-A2 -> AlCu-ε | Liquid: Cu 0.519; bcc-A2: Cu 0.585; AlCu-ε: Cu 0.576 | model | [3] (ed.) 1998 | Table I, p. 48, row 4; `ORC-YN6H7QX352` |  |
| 1121.85 | γ′ + ε -> ε′ | ε′: Cu 0.5 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 22; `ORC-UL7TV725B6` |  |
| 1120.15 | ε -> liq + ε′ | ε′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 25; `ORC-PWXHC6W3LT.952fe2` |  |
| 1120.15 | γ′ + ε -> ε′ | ε′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 21; `ORC-PWXHC6W3LT.aacbf3` |  |
| 1119.95 | γ′ + ε -> ε′ | γ′: Cu 0.631; ε: Cu 0.591; ε′: Cu 0.6 | model | [1] Kroupa 2021 | Table 5, p. 11, row 19; `ORC-REFJ6AO242` |  |
| 1119.75 | ε -> liq + ε′ | ε′: Cu 0.5 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 26; `ORC-VAG5ISH4DZ` |  |
| 1119.15 | γ′ + ε -> ε′ | ε′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 20; `ORC-AU24W3G6K4` |  |
| 1119.15 | ε -> liq + ε′ | ε′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 24; `ORC-TR6TDUEKHW` |  |
| 1115.45 | ε -> liq + ε′ | ε: Cu 0.582; liq: Cu 0.515; ε′: Cu 0.597 | model | [1] Kroupa 2021 | Table 5, p. 11, row 23; `ORC-MKKYRQ3XPV` |  |
| 1109.3 | eutectoid: bcc-A2 -> AlCu-ε + AlCu-γ(D83) | bcc-A2: Cu 0.602; AlCu-ε: Cu 0.58; AlCu-γ(D83): Cu 0.635 | model | [3] (ed.) 1998 | Table I, p. 48, row 11; `ORC-K34FXUCVZL` |  |
| 1073.15 | γ -> γ′ + β (ord.) |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 29; `ORC-WFX24X6BLU` |  |
| 1063.85 | γ -> γ′ + β (ord.) |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 30; `ORC-LBYYEJOSNX` |  |
| 1054.2 | eutectoid: AlCu-γ(H) -> AlCu-γ(D83) + bcc-A2 | AlCu-γ(H): Cu 0.688; AlCu-γ(D83): Cu 0.686; bcc-A2: Cu 0.732 | model | [3] (ed.) 1998 | Table I, p. 48, row 9; `ORC-YL27KNTOA6` |  |
| 1052.75 | γ -> γ′ + β (ord.) |  | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 28; `ORC-SHT5AECUJZ` |  |
| 1050.75 | γ -> γ′ + β (ord.) | γ: Cu 0.69; γ′: Cu 0.676; β: Cu 0.729 | model | [1] Kroupa 2021 | Table 5, p. 11, row 27; `ORC-T7RRXCL7RB` |  |
| 959.7 | peritectoid: AlCu-ε + AlCu-γ(D83) -> AlCu-δ | AlCu-ε: Cu 0.572; AlCu-γ(D83): Cu 0.628; AlCu-δ: Cu 0.6 | model | [3] (ed.) 1998 | Table I, p. 48, row 12; `ORC-RD6SYN5IVP` |  |
| 957.75 | γ′ + ε′ -> δ | ε′: Cu 0.5; δ: Cu 0.615385 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 34; `ORC-XXQB2LFYRJ` |  |
| 957.15 | γ′ + ε′ -> δ | ε′: Cu 0.5; δ: Cu 0.615385 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 33; `ORC-FO7UES4SZQ` |  |
| 955.25 | γ′ + ε′ -> δ | ε′: Cu 0.5; δ: Cu 0.615385 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 32; `ORC-NNAJL2DKTP` |  |
| 955.05 | γ′ + ε′ -> δ | γ′: Cu 0.621; ε′: Cu 0.584; δ: Cu 0.604 | model | [1] Kroupa 2021 | Table 5, p. 11, row 31; `ORC-NJS7KKXHIT` |  |
| 898.15 | liq + ε′ -> η | ε′: Cu 0.5; η: Cu 0.5 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 37; `ORC-HLONY5QYI3` |  |
| 898.15 | liq + ε′ -> η | ε′: Cu 0.5; η: Cu 0.5 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 38; `ORC-PGSU2QA5VR` |  |
| 898 | peritectic: Liquid + AlCu-ε -> AlCu-η | Liquid: Cu 0.345; AlCu-ε: Cu 0.541; AlCu-η: Cu 0.51 | model | [3] (ed.) 1998 | Table I, p. 48, row 3; `ORC-BHHCJPGI4Y` |  |
| 897.65 | liq + ε′ -> η | liq: Cu 0.362; ε′: Cu 0.549; η: Cu 0.516 | model | [1] Kroupa 2021 | Table 5, p. 11, row 35; `ORC-KQ52LT7OKI` |  |
| 897.65 | liq + ε′ -> η | ε′: Cu 0.5; η: Cu 0.5 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 36; `ORC-O7QOPDL7U2` |  |
| 871.85 | ε′ + η -> η′ | ε′: Cu 0.548; η: Cu 0.516; η′: Cu 0.529 | model | [1] Kroupa 2021 | Table 5, p. 11, row 39; `ORC-MBPW3664K6` |  |
| 871.05 | ε′ + η -> η′ | ε′: Cu 0.5; η: Cu 0.5; η′: Cu 0.5 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 42; `ORC-IJTKBNALU3` |  |
| 870.15 | ε′ + η -> η′ | ε′: Cu 0.5; η: Cu 0.5; η′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 40; `ORC-4WYRR53PRX` |  |
| 870.15 | ε′ + η -> η′ | ε′: Cu 0.5; η: Cu 0.5; η′: Cu 0.5 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 41; `ORC-ZP2XYIXGJZ` |  |
| 869 | peritectic: Liquid + AlCu-η -> AlCu-θ | Liquid: Cu 0.319; AlCu-η: Cu 0.506; AlCu-θ: Cu 0.329 | model | [3] (ed.) 1998 | Table I, p. 48, row 2; `ORC-EEL4D7PQZR` |  |
| 866.45 | liq + η -> θ | η: Cu 0.5; θ: Cu 0.333333 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 46; `ORC-OWHDR4YT6K` |  |
| 866.15 | liq + η -> θ | liq: Cu 0.335; η: Cu 0.513; θ: Cu 0.337 | model | [1] Kroupa 2021 | Table 5, p. 11, row 43; `ORC-4KDFQEGNTU` |  |
| 864.15 | liq + η -> θ | η: Cu 0.5; θ: Cu 0.333333 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 45; `ORC-CE3FHZD6KB` |  |
| 862.15 | liq + η -> θ | η: Cu 0.5; θ: Cu 0.333333 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 44; `ORC-LGOOT5KSJK` |  |
| 861 | congruent transformation: AlCu-ζ -> AlCu-ε | AlCu-ζ: Cu 0.55 | model | [3] (ed.) 1998 | Table I, p. 48, row 15; `ORC-R5HP5P7BPL` |  |
| 855.8 | eutectoid: AlCu-ε -> AlCu-ζ + AlCu-δ | AlCu-ε: Cu 0.555; AlCu-ζ: Cu 0.55; AlCu-δ: Cu 0.6 | model | [3] (ed.) 1998 | Table I, p. 48, row 13; `ORC-O6ZTNN7RNU` |  |
| 853.55 | ε′ -> ζ + η′ | ε′: Cu 0.5; ζ: Cu 0.561; η′: Cu 0.5 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 62; `ORC-PEJC5GDAHP` |  |
| 852.4 | eutectoid: AlCu-ε -> AlCu-η + AlCu-ζ | AlCu-ε: Cu 0.543; AlCu-η: Cu 0.511; AlCu-ζ: Cu 0.55 | model | [3] (ed.) 1998 | Table I, p. 48, row 14; `ORC-5OH2AUMO35` |  |
| 851.15 | ε′ -> δ + ζ | ε′: Cu 0.5; δ: Cu 0.615385; ζ: Cu 0.561 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 51; `ORC-PBI4XQ6ERQ` |  |
| 851.15 | ε′ -> δ + ζ | ε′: Cu 0.566; δ: Cu 0.596; ζ: Cu 0.561 | model | [1] Kroupa 2021 | Table 5, p. 11, row 49; `ORC-SPXSHY4NGW` |  |
| 848.15 | ε′ -> δ + ζ | ε′: Cu 0.5; δ: Cu 0.615385; ζ: Cu 0.561 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 50; `ORC-ODG3XROQDD` |  |
| 847.15 | η -> η′ + θ | η: Cu 0.5; η′: Cu 0.5; θ: Cu 0.333333 | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 55; `ORC-IBDDT6QJ3I` |  |
| 847.05 | η -> η′ + θ | η: Cu 0.5; η′: Cu 0.5; θ: Cu 0.333333 | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 54; `ORC-TNACPBZ2EX` |  |
| 846.75 | η -> η′ + θ | η: Cu 0.512; η′: Cu 0.521; θ: Cu 0.337 | model | [1] Kroupa 2021 | Table 5, p. 11, row 53; `ORC-OQNNI42UCJ` |  |
| 841.15 | ε′ -> ζ + η′ | ε′: Cu 0.551; ζ: Cu 0.561; η′: Cu 0.532 | model | [1] Kroupa 2021 | Table 5, p. 11, row 61; `ORC-T3O3MRA7DG` |  |
| 840.65 | β -> (Cu) + γ′ |  | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 60; `ORC-LZXO7P7ITU` |  |
| 840.55 | β -> (Cu) + γ′ | β: Cu 0.774; (Cu): Cu 0.798; γ′: Cu 0.69 | model | [1] Kroupa 2021 | Table 5, p. 11, row 57; `ORC-HYMAIDFVZG` |  |
| 840.15 | β -> (Cu) + γ′ |  | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 59; `ORC-36CNA4RQGA` |  |
| 840.15 | Fcc-bcc-γ | Fcc: Cu 0.803; bcc: Cu 0.761; γ: Cu 0.69 | experimental | [2] Miettinen 2002; _cites Murray 1985_ [doi](https://doi.org/10.1179/imr.1985.30.1.211) | Table III, p. 4, row 7; `ORC-4FLZLE2TK3` |  |
| 840.15 | Fcc-bcc-γ | Fcc: Cu 0.803; bcc: Cu 0.762; γ: Cu 0.701 | model | [2] Miettinen 2002 | Table III, p. 4, row 9; `ORC-D74MNC5TXZ` |  |
| 839.85 | β -> (Cu) + γ′ |  | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 5, p. 11, row 58; `ORC-4X2X4TJXG4` |  |
| 838.15 | Fcc-bcc-γ | Fcc: Cu 0.795; bcc: Cu 0.771; γ: Cu 0.691 | model | [2] Miettinen 2002; _cites Ansara 1998_ | Table III, p. 4, row 8; `ORC-2F6DPHBO76` |  |
| 837.9 | eutectoid: bcc-A2 -> AlCu-γ(D83) + fcc-A1 | bcc-A2: Cu 0.771; AlCu-γ(D83): Cu 0.691; fcc-A1: Cu 0.795 | model | [3] (ed.) 1998 | Table I, p. 48, row 8; `ORC-WJOW7ZBL7L` |  |
| 830.85 | ε′ -> δ + ζ | ε′: Cu 0.5; δ: Cu 0.615385; ζ: Cu 0.561 | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 52; `ORC-62CXLEFNSH` |  |
| 820.7 | eutectic: Liquid -> fcc-A1 + AlCu-θ | Liquid: Cu 0.175; fcc-A1: Cu 0.025; AlCu-θ: Cu 0.318 | model | [3] (ed.) 1998 | Table I, p. 48, row 1; `ORC-FNCFSLFUOM` |  |

## Other properties

### Phase transition (5)

Table: Phase transition, Al–Cu system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 854.45 K | 854.45 | congruent transformation: ζ -> ε′(congruent); _ζ: Cu 0.561; ε′: Cu 0.5_ | model | [1] Kroupa 2021 | Table 5, p. 11, row 47; `ORC-V7QMASFKK6` |  |
| Phase transition | 874.75 K | 874.75 | congruent transformation: ζ -> ε′(congruent); _ε′: Cu 0.5_ | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 48; `ORC-OYVYBWG7JM` |  |
| Phase transition | 1316.15 K | 1316.15 | congruent melting: liq. -> β (congruent) | model | [1] Kroupa 2021; _cites Liang 2015_ [doi](https://doi.org/10.1016/j.calphad.2015.10.004) | Table 5, p. 11, row 3; `ORC-UF2JPVF74E` |  |
| Phase transition | 1325.15 K | 1325.15 | congruent melting: liq. -> β (congruent) | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 5, p. 11, row 2; `ORC-DCUYWBIXTF` |  |
| Phase transition | 1329.45 K | 1329.45 | congruent melting: liq. -> β (congruent); _liq.: Cu 0.755; β: Cu 0.755_ | model | [1] Kroupa 2021 | Table 5, p. 11, row 1; `ORC-NLGDPG4DVD` |  |

### Phase equilibrium (22)

Table: Phase equilibrium, Al–Cu system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase composition |  |  | θ + h; _θ: Al 0.664, Cu 0.336; h: Al 0.664, Cu 0.336_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 3; `ORC-ZMHUH5V2PQ` |  |
| Phase composition |  | 633.15 (\<) | α′; _α′: Al 0.21, Cu 0.79_ | experimental | [1] Kroupa 2021; _cites Kuwano 1977_ [doi](https://doi.org/10.2320/matertrans1960.18.807) | Table 2, p. 5, row 28; `ORC-7A3JDCRLMS` |  |
| Phase composition |  | 702.65 | ζ′ + f 0; _ζ′: Al 0.426, Cu 0.574; f 0: Al 0.426, Cu 0.574_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 13; `ORC-QCGRXWQOZE` |  |
| Phase composition |  | 758.15 | ζ; _ζ: Al 0.433, Cu 0.567_ | unspecified | [1] Kroupa 2021; _cites ref. 3_ | Table 2, p. 5, row 11; `ORC-4NC2AHE2J6` |  |
| Phase composition |  | 760.65 | ζ; _ζ: Al 0.42, Cu 0.58_ | experimental | [1] Kroupa 2021; _cites Gulay 2003_ [doi](https://doi.org/10.1002/zaac.200390076) | Table 2, p. 5, row 10; `ORC-ZQJ7233OSE` |  |
| Phase composition |  | 762.65 | ζ′; _ζ′: Al 0.423, Cu 0.577_ | experimental | [1] Kroupa 2021; _cites Gulay 2004_ [doi](https://doi.org/10.1016/j.jallcom.2003.08.019) | Table 2, p. 5, row 14; `ORC-RMRJBW7IOB` |  |
| Phase composition |  | 825.15 | ζ; _ζ: Al 0.435, Cu 0.565_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 9; `ORC-LNQFVTFD5B` |  |
| Phase composition |  | 833.15 | ζ′; _ζ′: Al 0.437, Cu 0.563_ | unspecified | [1] Kroupa 2021; _cites ref. 3_ | Table 2, p. 5, row 15; `ORC-MKWJD5BI5S` |  |
| Phase composition |  | 847.65 (\<) | η′; _η′: Al 0.486, Cu 0.514_ | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 2, p. 5, row 8; `ORC-NUC2ZSNK73` |  |
| Phase composition |  | 854.15 (\<) | η′ + g 0; _η′: Al 0.452, Cu 0.548; g 0: Al 0.452, Cu 0.548_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 7; `ORC-C6KZOIJZTO` |  |
| Phase composition |  | 863.65 (\<) | θ + h; _θ: Al 0.664, Cu 0.336; h: Al 0.664, Cu 0.336_ | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 2, p. 5, row 4; `ORC-5WBT5H5ZT7` |  |
| Phase composition |  | 864.15 (\<) | θ + h; _θ: Al 0.674, Cu 0.326; h: Al 0.674, Cu 0.326_ | experimental | [1] Kroupa 2021; _cites Goedecke 1996_ | Table 2, p. 5, row 2; `ORC-NZC2MMH7P3` |  |
| Phase composition |  | 872.65 | η + g; _η: Al 0.471, Cu 0.529; g: Al 0.471, Cu 0.529_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 5; `ORC-ONPWRTKDOR` |  |
| Phase composition |  | 933.65 (\<) | (Al); _(Al): Al 0.9752, Cu 0.0248_ | unspecified | [1] Kroupa 2021; _cites ref. 3_ | Table 2, p. 5, row 1; `ORC-UWI5F7UVTM` |  |
| Phase composition |  | 960.15 (\<) | δ + d; _δ: Al 0.36, Cu 0.64; d: Al 0.36, Cu 0.64_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 21; `ORC-MSZINQBO6H` |  |
| Phase composition |  | 985.65 | ε′; _ε′: Al 0.375, Cu 0.625_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 19; `ORC-DYGG5TOZ2I` |  |
| Phase composition |  | 1082.65 | β; _β: Al 0.18, Cu 0.82_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 27; `ORC-GOVPCZZH47` |  |
| Phase composition |  | 1146.65 (\<) | γ′; _γ′: Al 0.304, Cu 0.696_ | experimental | [1] Kroupa 2021; _cites ref. 1_ | Table 2, p. 5, row 26; `ORC-WTP3ZPOLA2` |  |
| Phase composition |  | 1147.15 (\<) | γ′ + c 0; _γ′: Al 0.3, Cu 0.7; c 0: Al 0.3, Cu 0.7_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 25; `ORC-YZBTV36TCH` |  |
| Phase composition |  | 1169.65 | γ; _γ: Al 0.31, Cu 0.69_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 23; `ORC-6EJDPJNRNW` |  |
| Phase composition |  | 1176.65 | ε; _ε: Al 0.355, Cu 0.645_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 17; `ORC-AOORGLJH2P` |  |
| Phase composition |  | 1356.15 (\<) | (Cu); _(Cu): Al 0, Cu 1_ | experimental | [1] Kroupa 2021; _cites Ponweiser 2011_ [doi](https://doi.org/10.1016/j.intermet.2011.07.007) | Table 2, p. 5, row 30; `ORC-KCXHFZWNGP` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. Aleš Kroupa, Ondřej Zobač, Klaus W. Richter, The thermodynamic reassessment of the binary Al–Cu system, J Mater Sci 56, 3430-3443 (2021). [doi:10.1007/s10853-020-05423-7](https://doi.org/10.1007/s10853-020-05423-7)
2. J. Miettinen, Thermodynamic description of the Cu-Al-Sn system in the copper-rich corner, Metall Mater Trans A 33, 1639-1648 (2002). [doi:10.1007/s11661-002-0173-7](https://doi.org/10.1007/s11661-002-0173-7)
3. I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).