# Co–Sn system

> Co–Sn system: 103 accepted literature values (invariant reaction 59, crystal structure 24, phase transition 13, formation 4) and 4 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/CO-SN.html · Markdown: https://data.orchid-project.org/systems/CO-SN.md

103 accepted literature values from 5 paper(s) (experimental 44, model 26, DFT 8, unspecified 25); 4 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/CO-SN.json) · [CSV](https://data.orchid-project.org/systems/CO-SN.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CO-SN) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CO-SN/CoSn-04Jia.json) · [phases (13)](https://data.orchid-project.org/phases/pages/CO-SN.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CO-SN.html) · [Markdown](https://data.orchid-project.org/systems/CO-SN.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 44 |
| model | 26 |
| DFT | 8 |
| unspecified | 25 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 59 |
| phase transition | 13 |
| formation | 4 |
| mixing / partial | 2 |
| crystal structure | 24 |
| other property | 1 |

## 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 |
|---|---|---|---|
| CoSn-04Jia.tdb | M. Jiang, J. Sato, I. Ohnuma, R. Kainuma, K. Ishida, Calphad, 28, 213-20(2004). [doi:10.1016/j.calphad.2004.08.001](https://doi.org/10.1016/j.calphad.2004.08.001) | `a10dd23f7f82a2c4b350702200df9843093add7dc1c27c93fa549a506b42ec73` | [viewer](https://orchid-project.org/phase-diagrams/#CO-SN/CoSn-04Jia.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoSn-04Jia.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoSn-04Jia.json) |
| CoSn-04Liu.tdb | L. Liu, C. Andersson, J. Liu, J. Electron. Mater., 33, 935-39(2004). [doi:10.1007/s11664-004-0019-8](https://doi.org/10.1007/s11664-004-0019-8) | `61b66e699771d1e4f72f5000d03d3b5587b50b0e090827afb09e59ddc6d747e6` | [viewer](https://orchid-project.org/phase-diagrams/#CO-SN/CoSn-04Liu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoSn-04Liu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoSn-04Liu.json) |
| CoSn-09Don.tdb | H.Q. Dong, S. Jin, L.G. Zhang, J.S. Wang, X.M. Tao, H.S. Liu, Z.P. Jin, J. Electron. Mater., 38, 2158-69(2009). [doi:10.1007/s11664-009-0874-4](https://doi.org/10.1007/s11664-009-0874-4) | `df75c146f15affdedc443ed8e0d8b7efa0336059081a52f8e66a16f06f0d74da` | [viewer](https://orchid-project.org/phase-diagrams/#CO-SN/CoSn-09Don.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoSn-09Don.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoSn-09Don.json) |
| CoSn-19Jed.tdb | V. Jedlickova, A. Zemanova, A. Kroupa, J. Phase Equilib. Diffus., 40, 21-33(2019). [doi:10.1007/s11669-018-0687-3](https://doi.org/10.1007/s11669-018-0687-3) | `a1f1c360881522fd9864e9ec1d70a04b0d7e1d46077beb244b5b600951c3e6a6` | [viewer](https://orchid-project.org/phase-diagrams/#CO-SN/CoSn-19Jed.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoSn-19Jed.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoSn-19Jed.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CoSn-04Jia.tdb | 1375.54 | FCC_A1 (x(Sn) 0.02715) + LIQUID (x(Sn) 0.22993) + CO3SN2_B82 (x(Sn) 0.38645) |
| CoSn-04Jia.tdb | 1238.17 | CO3SN2_B82 (x(Sn) 0.41738) + COSN_B35 (x(Sn) 0.5) + LIQUID (x(Sn) 0.76654) |
| CoSn-04Jia.tdb | 841.55 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98288) |
| CoSn-04Jia.tdb | 841.55 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98286) |
| CoSn-04Jia.tdb | 696.99 | FCC_A1 (x(Sn) 3.900e-4) + HCP_A3 (x(Sn) 6.100e-4) + CO3SN2_B82 (x(Sn) 0.4074) |
| CoSn-04Jia.tdb | 696.99 | FCC_A1 (x(Sn) 3.900e-4) + HCP_A3 (x(Sn) 6.100e-4) + CO3SN2_B82 (x(Sn) 0.4074) |
| CoSn-04Jia.tdb | 620.84 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99777) |
| CoSn-04Jia.tdb | 620.84 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99777) |
| CoSn-04Jia.tdb | 620.84 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99776) |
| CoSn-04Jia.tdb | 504.96 | COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99959) + BCT_A5 (x(Sn) 1) |
| CoSn-04Jia.tdb | 504.96 | COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99959) + BCT_A5 (x(Sn) 1) |
| CoSn-04Liu.tdb | 1380.94 | FCC_A1 (x(Sn) 0.01978) + LIQUID (x(Sn) 0.22262) + CO3SN2_B82 (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 1380.94 | FCC_A1 (x(Sn) 0.01978) + LIQUID (x(Sn) 0.22251) + CO3SN2_B82 (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 1216.62 | CO3SN2_B82 (x(Sn) 0.4) + COSN_B35 (x(Sn) 0.5) + LIQUID (x(Sn) 0.78978) |
| CoSn-04Liu.tdb | 1216.62 | CO3SN2_B82 (x(Sn) 0.4) + COSN_B35 (x(Sn) 0.5) + LIQUID (x(Sn) 0.78998) |
| CoSn-04Liu.tdb | 840 | CO3SN2_B82 (x(Sn) 0.4) + CO3SN2_ALPHA (x(Sn) 0.4) + COSN_B35 (x(Sn) 0.5) |
| CoSn-04Liu.tdb | 840 | FCC_A1 (x(Sn) 6.000e-5) + CO3SN2_B82 (x(Sn) 0.4) + CO3SN2_ALPHA (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 840 | FCC_A1 (x(Sn) 6.000e-5) + CO3SN2_ALPHA (x(Sn) 0.4) + CO3SN2_B82 (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 797.29 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.95005) |
| CoSn-04Liu.tdb | 797.29 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.95) |
| CoSn-04Liu.tdb | 797.29 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.95008) |
| CoSn-04Liu.tdb | 694.94 | HCP_A3 (x(Sn) 0) + FCC_A1 (x(Sn) 1.000e-5) + CO3SN2_ALPHA (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 694.94 | HCP_A3 (x(Sn) 0) + FCC_A1 (x(Sn) 1.000e-5) + CO3SN2_ALPHA (x(Sn) 0.4) |
| CoSn-04Liu.tdb | 501.01 | COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98953) + BCT_A5 (x(Sn) 1) |
| CoSn-04Liu.tdb | 501.01 | COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98964) + BCT_A5 (x(Sn) 1) |
| CoSn-04Liu.tdb | 501.01 | COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98967) + BCT_A5 (x(Sn) 1) |
| CoSn-09Don.tdb | 1375.54 | FCC_A1 (x(Sn) 0.02715) + LIQUID (x(Sn) 0.22993) + CO3SN2_B82 (x(Sn) 0.38645) |
| CoSn-09Don.tdb | 1238.17 | CO3SN2_B82 (x(Sn) 0.41738) + COSN_B35 (x(Sn) 0.5) + LIQUID (x(Sn) 0.76654) |
| CoSn-09Don.tdb | 848.39 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98213) |
| CoSn-09Don.tdb | 848.39 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.98213) |
| CoSn-09Don.tdb | 696.99 | FCC_A1 (x(Sn) 3.900e-4) + HCP_A3 (x(Sn) 6.100e-4) + CO3SN2_B82 (x(Sn) 0.4074) |
| CoSn-09Don.tdb | 696.99 | FCC_A1 (x(Sn) 3.900e-4) + HCP_A3 (x(Sn) 6.100e-4) + CO3SN2_B82 (x(Sn) 0.4074) |
| CoSn-09Don.tdb | 623.87 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99802) |
| CoSn-09Don.tdb | 623.87 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99802) |
| CoSn-09Don.tdb | 623.87 | COSN2_C16 (x(Sn) 0.66667) + COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99802) |
| CoSn-09Don.tdb | 504.98 | COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99968) + BCT_A5 (x(Sn) 1) |
| CoSn-09Don.tdb | 504.98 | COSN3 (x(Sn) 0.75) + LIQUID (x(Sn) 0.99968) + BCT_A5 (x(Sn) 1) |
| CoSn-19Jed.tdb | 1393.1 | FCC_A1 (x(Sn) 0.01957) + LIQUID (x(Sn) 0.2355) + CO3SN2_B82 (x(Sn) 0.39365) |
| CoSn-19Jed.tdb | 1240.16 | CO3SN2_B82 (x(Sn) 0.41337) + COSN_B35 (x(Sn) 0.5) + LIQUID (x(Sn) 0.70887) |
| CoSn-19Jed.tdb | 847.44 | FCC_A1 (x(Sn) 1.600e-4) + CO3SN2_ALPHA (x(Sn) 0.4) + CO3SN2_B82 (x(Sn) 0.4013) |
| CoSn-19Jed.tdb | 847.44 | FCC_A1 (x(Sn) 1.600e-4) + CO3SN2_ALPHA (x(Sn) 0.4) + CO3SN2_B82 (x(Sn) 0.4013) |
| CoSn-19Jed.tdb | 845.06 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.97276) |
| CoSn-19Jed.tdb | 845.06 | COSN_B35 (x(Sn) 0.5) + COSN2_C16 (x(Sn) 0.66667) + LIQUID (x(Sn) 0.97269) |
| CoSn-19Jed.tdb | 793.12 | CO3SN2_ALPHA (x(Sn) 0.4) + CO3SN2_B82 (x(Sn) 0.40796) + COSN_B35 (x(Sn) 0.5) |
| CoSn-19Jed.tdb | 695.1 | FCC_A1 (x(Sn) 2.000e-5) + HCP_A3 (x(Sn) 3.000e-5) + CO3SN2_ALPHA (x(Sn) 0.4) |
| CoSn-19Jed.tdb | 618.21 | COSN2_C16 (x(Sn) 0.66667) + COSN3_HT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99757) |
| CoSn-19Jed.tdb | 618.2 | COSN2_C16 (x(Sn) 0.66667) + COSN3_HT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99756) |
| CoSn-19Jed.tdb | 547.79 | COSN3_LT (x(Sn) 0.75) + COSN3_HT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99911) |
| CoSn-19Jed.tdb | 547.79 | COSN2_C16 (x(Sn) 0.66667) + COSN3_HT (x(Sn) 0.75) + COSN3_LT (x(Sn) 0.75) |
| CoSn-19Jed.tdb | 547.79 | COSN3_HT (x(Sn) 0.75) + COSN3_LT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99912) |
| CoSn-19Jed.tdb | 504.97 | COSN3_LT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99965) + BCT_A5 (x(Sn) 1) |
| CoSn-19Jed.tdb | 504.97 | COSN3_LT (x(Sn) 0.75) + LIQUID (x(Sn) 0.99965) + BCT_A5 (x(Sn) 1) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CO/CO-SN.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CO/CO-SN.json) · [CALPHAD hull CoSn-04Jia](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-SN--CoSn-04Jia.json) · [CALPHAD hull CoSn-04Liu](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-SN--CoSn-04Liu.json) · [CALPHAD hull CoSn-09Don](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-SN--CoSn-09Don.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Co–Sn system (59)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1472.15 | congruent melting: β-Co3Sn2 -> liq. | β-Co3Sn2: Sn 0.399; L: Sn 0.399 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 2; `ORC-MPXIOVYHXP` |  |
| 1469.85 | congruent melting: β-Co3Sn2 -> liq. | β-Co3Sn2: Sn 0.398; L: Sn 0.398 | model | [1] Jedličková 2019 | Table 3, p. 11, row 1; `ORC-2OP53JO4PG` |  |
| 1400.15 | eutectic: liq -> (α-Co) + β-Co3Sn2 | L: Sn 0.23; (α-Co): Sn 0.016; β-Co3Sn2: Sn 0.393 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 4; `ORC-PY3WFQKQOX` |  |
| 1398.15 | eutectic: L -> Co3Sn2_beta + FCC | Co3Sn2_beta: Sn 0.4 | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 15; `ORC-CJI2Q53ZOJ` |  |
| 1398.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 5; `ORC-TJLPAWY6IP` |  |
| 1392.15 | eutectic: liq -> (α-Co) + β-Co3Sn2 | L: Sn 0.234; (α-Co): Sn 0.017; β-Co3Sn2: Sn 0.394 | model | [1] Jedličková 2019 | Table 3, p. 11, row 3; `ORC-LUJAGYBPWR` |  |
| 1385.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Zemczuzny 1908_ [doi](https://doi.org/10.1002/zaac.19080590133) | Table 1, p. 3, row 2; `ORC-67UF7XA72N` |  |
| 1385.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 4; `ORC-E45EQBYMQZ` |  |
| 1385.15 | eutectic: L -> Co3Sn2_beta + FCC | Co3Sn2_beta: Sn 0.4 | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 14; `ORC-UKVV7DXIXA` |  |
| 1381.15 | eutectic: L -> Co3Sn2_beta + FCC | Co3Sn2_beta: Sn 0.4 | model | [2] Liu 2004 | Table II, p. 3, row 13; `ORC-JFH2G2YGYH` |  |
| 1381.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Hashimoto 1938_ | Table 1, p. 3, row 3; `ORC-UCRTJM72KG` |  |
| 1376.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | model | [3] Jiang 2004 | Table 1, p. 3, row 6; `ORC-2KSRDHD6J6` |  |
| 1368.15 | eutectic: L -> (αCo) + βCo3Sn2 | βCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Lewkonja 1908_ | Table 1, p. 3, row 1; `ORC-R53RAMO64P` |  |
| 1240.15 | peritectic: liq + β-Co3Sn2 -> CoSn | L: Sn 0.729; β-Co3Sn2: Sn 0.418; CoSn: Sn 0.5 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 6; `ORC-NSPZUW6EEV` |  |
| 1240.15 | peritectic: liq + β-Co3Sn2 -> CoSn | L: Sn 0.709; β-Co3Sn2: Sn 0.413; CoSn: Sn 0.5 | model | [1] Jedličková 2019 | Table 3, p. 11, row 5; `ORC-TJ7VPUTO4S` |  |
| 1239.15 | peritectic: L + βCo3Sn2 -> CoSn | βCo3Sn2: Sn 0.4; CoSn: Sn 0.5 | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 13; `ORC-S2PJREDVUH` |  |
| 1238.15 | peritectic: L + βCo3Sn2 -> CoSn | βCo3Sn2: Sn 0.4; CoSn: Sn 0.5 | model | [3] Jiang 2004 | Table 1, p. 3, row 14; `ORC-WZHQJBY6CY` |  |
| 1216.15 | L + Co3Sn2_beta -> CoSn | Co3Sn2_beta: Sn 0.4; CoSn: Sn 0.5 | model | [2] Liu 2004 | Table II, p. 3, row 7; `ORC-WR3WX56M34` |  |
| 1214.15 | peritectic: L + βCo3Sn2 -> CoSn | βCo3Sn2: Sn 0.4; CoSn: Sn 0.5 | experimental | [3] Jiang 2004; _cites Lewkonja 1908_ | Table 1, p. 3, row 10; `ORC-KT6RQFOP42` |  |
| 1209.15 | L + Co3Sn2_beta -> CoSn | Co3Sn2_beta: Sn 0.4; CoSn: Sn 0.5 | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 9; `ORC-SK5P6VTDB3` |  |
| 1209.15 | L + Co3Sn2_beta -> CoSn | Co3Sn2_beta: Sn 0.4; CoSn: Sn 0.5 | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 8; `ORC-VVK5PNGJKH` |  |
| 1209.15 | peritectic: L + βCo3Sn2 -> CoSn | βCo3Sn2: Sn 0.4; CoSn: Sn 0.5 | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 12; `ORC-ZSZKPCRZDG` |  |
| 1200.15 | peritectic: L + βCo3Sn2 -> CoSn | βCo3Sn2: Sn 0.4; CoSn: Sn 0.5 | experimental | [3] Jiang 2004; _cites Zemczuzny 1908_ [doi](https://doi.org/10.1002/zaac.19080590133) | Table 1, p. 3, row 11; `ORC-RGZG2FP275` |  |
| 847.35 | peritectic: (α-Co) + β-Co3Sn2 -> α-Co3Sn2 | β-Co3Sn2: Sn 0.401; α-Co3Sn2: Sn 0.4 | model | [1] Jedličková 2019 | Table 3, p. 11, row 7; `ORC-MQLJJCZIMP` |  |
| 845.15 | peritectic: liq + CoSn -> CoSn2 | L: Sn 0.959; CoSn: Sn 0.5; CoSn2: Sn 0.667 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 10; `ORC-SO65NGHIFQ` |  |
| 845.05 | peritectic: liq + CoSn -> CoSn2 | L: Sn 0.973; CoSn: Sn 0.5; CoSn2: Sn 0.667 | model | [1] Jedličková 2019 | Table 3, p. 11, row 9; `ORC-QXTJ47WW5B` |  |
| 844.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Lang 1996_ | Table 1, p. 3, row 23; `ORC-ZX4AJLJCJC` |  |
| 843.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | model | [3] Jiang 2004 | Table 1, p. 3, row 24; `ORC-JTY4YMNMIM` |  |
| 826.15 | peritectic: (α-Co) + β-Co3Sn2 -> α-Co3Sn2 | (α-Co): Sn 0.008; β-Co3Sn2: Sn 0.406; α-Co3Sn2: Sn 0.397 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 8; `ORC-S2YHT6EZ2Y` |  |
| 823.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 22; `ORC-36KNGZ6XM2` |  |
| 798.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Matveyeva 1968_ | Table 1, p. 3, row 20; `ORC-4APBMYIXCT` |  |
| 798.15 | L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | model | [2] Liu 2004 | Table II, p. 3, row 4; `ORC-FTIIXERSME` |  |
| 798.15 | L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 5; `ORC-OJQDCD3KOX` |  |
| 798.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 21; `ORC-SXHGNXJYJO` |  |
| 798.15 | L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 6; `ORC-XI2X7Y6I6C` |  |
| 793.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Lewkonja 1908_ | Table 1, p. 3, row 18; `ORC-GQUDFLCMSU` |  |
| 793.15 | eutectic: β-Co3Sn2 -> α-Co3Sn2 + CoSn | β-Co3Sn2: Sn 0.411; α-Co3Sn2: Sn 0.399; CoSn: Sn 0.5 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 12; `ORC-YDTI4E3V5H` |  |
| 793.05 | eutectic: β-Co3Sn2 -> α-Co3Sn2 + CoSn | β-Co3Sn2: Sn 0.408; α-Co3Sn2: Sn 0.4; CoSn: Sn 0.5 | model | [1] Jedličková 2019 | Table 3, p. 11, row 11; `ORC-EBA6FTDUKO` |  |
| 788.15 | peritectic: L + CoSn -> CoSn2 | CoSn: Sn 0.5; CoSn2: Sn 0.666667 | experimental | [3] Jiang 2004; _cites Zemczuzny 1908_ [doi](https://doi.org/10.1002/zaac.19080590133) | Table 1, p. 3, row 19; `ORC-Z6BLR3GFWG` |  |
| 695.15 | eutectoid: (αCo) -> (εCo) + αCo3Sn2 | αCo3Sn2: Sn 0.4 | model | [3] Jiang 2004 | Table 1, p. 3, row 27; `ORC-GEIUV3FEFU` |  |
| 694.95 | eutectic: (α-Co) -> (ε-Co) + α-Co3Sn2 | α-Co3Sn2: Sn 0.4 | model | [1] Jedličková 2019 | Table 3, p. 11, row 13; `ORC-QXLSOIISEI` |  |
| 694.15 | eutectoid: (αCo) -> (εCo) + αCo3Sn2 | αCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 26; `ORC-ZSDX3CJXDU` |  |
| 693.15 | eutectic: (α-Co) -> (ε-Co) + α-Co3Sn2 | (α-Co): Sn 0.028; (ε-Co): Sn 0.0035; α-Co3Sn2: Sn 0.397 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 14; `ORC-X7TWXISNT2` |  |
| 693.15 | eutectoid: (αCo) -> (εCo) + αCo3Sn2 | αCo3Sn2: Sn 0.4 | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 25; `ORC-YVX7PBTMCY` |  |
| 618.25 | peritectic: liq + CoSn2 -> β-CoSn3 | L: Sn 0.998; CoSn2: Sn 0.667; β-CoSn3: Sn 0.75 | model | [1] Jedličková 2019 | Table 3, p. 11, row 15; `ORC-PQZ6R7ZBKU` |  |
| 618.15 | peritectic: liq + CoSn2 -> β-CoSn3 | L: Sn 0.996; CoSn2: Sn 0.667; β-CoSn3: Sn 0.75 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 16; `ORC-5UW4T2Z446` |  |
| 618.15 | peritectic: L + CoSn2 -> βCoSn3 | CoSn2: Sn 0.666667; βCoSn3: Sn 0.75 | experimental | [3] Jiang 2004; _cites Lang 1996_ | Table 1, p. 3, row 28; `ORC-ELXSWWLYFB` |  |
| 618.15 | peritectic: L + CoSn2 -> βCoSn3 | CoSn2: Sn 0.666667; βCoSn3: Sn 0.75 | model | [3] Jiang 2004 | Table 1, p. 3, row 29; `ORC-FPPWZJXRTV` |  |
| 548.15 | liq + β-CoSn3 -> α-CoSn3 | L: Sn 0.999; β-CoSn3: Sn 0.25; α-CoSn3: Sn 0.25 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 18; `ORC-J6JUX5HOCH` |  |
| 548.15 | β-CoSn3 -> α-CoSn3 + CoSn2 | β-CoSn3: Sn 0.25; α-CoSn3: Sn 0.25; CoSn2: Sn 0.667 | unspecified | [1] Jedličková 2019; _cites Bulanova 2015_ | Table 3, p. 11, row 20; `ORC-VRLO4XOWHR` |  |
| 547.75 | β-CoSn3 -> α-CoSn3 + CoSn2 | β-CoSn3: Sn 0.25; α-CoSn3: Sn 0.25; CoSn2: Sn 0.667 | model | [1] Jedličková 2019 | Table 3, p. 11, row 19; `ORC-4QCWDPJJ4D` |  |
| 547.75 | liq + β-CoSn3 -> α-CoSn3 | L: Sn 0.999; β-CoSn3: Sn 0.25; α-CoSn3: Sn 0.25 | model | [1] Jedličková 2019 | Table 3, p. 11, row 17; `ORC-H3OHDY5ZMI` |  |
| 505.15 | eutectic: L -> αCoSn3 + (βSn) | αCoSn3: Sn 0.75; (βSn): Sn 1 | model | [3] Jiang 2004 | Table 1, p. 3, row 35; `ORC-EG7GOS22DV` |  |
| 502.15 | eutectic: L -> αCoSn3 + (βSn) | αCoSn3: Sn 0.75; (βSn): Sn 1 | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 34; `ORC-C45Y73LY44` |  |
| 502.15 | eutectic: L -> CoSn2 + (Sn) | CoSn2: Sn 0.666667; (Sn): Sn 1 | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 3; `ORC-DHZIA33XXZ` |  |
| 502.15 | eutectic: L -> αCoSn3 + (βSn) | αCoSn3: Sn 0.75; (βSn): Sn 1 | experimental | [3] Jiang 2004; _cites Lewkonja 1908_ | Table 1, p. 3, row 32; `ORC-N4O2SW2CHP` |  |
| 502.15 | eutectic: L -> CoSn2 + (Sn) | CoSn2: Sn 0.666667; (Sn): Sn 1 | model | [2] Liu 2004 | Table II, p. 3, row 1; `ORC-NQ7SVEU2NT` |  |
| 502.15 | eutectic: L -> αCoSn3 + (βSn) | αCoSn3: Sn 0.75; (βSn): Sn 1 | experimental | [3] Jiang 2004; _cites Zemczuzny 1908_ [doi](https://doi.org/10.1002/zaac.19080590133) | Table 1, p. 3, row 33; `ORC-X473MYWLCT` |  |
| 502.15 | eutectic: L -> CoSn2 + (Sn) | CoSn2: Sn 0.666667; (Sn): Sn 1 | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 2; `ORC-ZDCUWSHQ2N` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Co–Sn system (4)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| AuSn4 |  | -7.2 kJ/mol (basis unstated) | 10 | model |  |  | [4] Dong 2009 | Table II, p. 4, row 10; `ORC-SWZZVGOYZS.0a530c` |  |
| AuSn4 |  | -7.19 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Dong 2009 | Table II, p. 4, row 9; `ORC-HSM3BPNK47.567916` |  |
| NiAs-type CoSn |  | -3.82 kJ/mol (basis unstated) | 0 | DFT |  |  | [4] Dong 2009 | Table II, p. 4, row 1; `ORC-WR4H7JQYRM.da54de` |  |
| NiAs-type CoSn |  | -3.75 kJ/mol (basis unstated) | 10 | model |  |  | [4] Dong 2009 | Table II, p. 4, row 2; `ORC-GIYKV3WK3V.26c5f5` |  |

## Other properties

### Phase transition (13)

Table: Phase transition, Co–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 548.15 K | 548.15 | polymorphic: βCoSn3 -> αCoSn3; _βCoSn3: Sn 0.75; αCoSn3: Sn 0.75_ | experimental | [3] Jiang 2004; _cites Lang 1996_ | Table 1, p. 3, row 30; `ORC-D4DHSXSGUZ` |  |
| Phase transition | 773.15 K | 773.15 | Co3Sn2_beta -> Co3Sn2_alfa; _Co3Sn2_beta: Sn 0.4; Co3Sn2_alfa: Sn 0.4_ | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 17; `ORC-SOULVQIHC5` |  |
| Phase transition | 773.15 K | 773.15 | polymorphic: βCo3Sn2 -> αCo3Sn2; _βCo3Sn2: Sn 0.4; αCo3Sn2: Sn 0.4_ | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 15; `ORC-ZPGR73WLDW` |  |
| Phase transition | 836.15 K | 836.15 | polymorphic: βCo3Sn2 -> αCo3Sn2; _βCo3Sn2: Sn 0.4; αCo3Sn2: Sn 0.4_ | model | [3] Jiang 2004 | Table 1, p. 3, row 17; `ORC-EQYEONSE6P` |  |
| Phase transition | 840.15 K | 840.15 | Co3Sn2_beta -> Co3Sn2_alfa; _Co3Sn2_beta: Sn 0.4; Co3Sn2_alfa: Sn 0.4_ | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 18; `ORC-UQDYQHVTDZ` |  |
| Phase transition | 840.15 K | 840.15 | Co3Sn2_beta -> Co3Sn2_alfa; _Co3Sn2_beta: Sn 0.4; Co3Sn2_alfa: Sn 0.4_ | model | [2] Liu 2004 | Table II, p. 3, row 16; `ORC-UXJI326QAE` |  |
| Phase transition | 840.15 K | 840.15 | polymorphic: βCo3Sn2 -> αCo3Sn2; _βCo3Sn2: Sn 0.4; αCo3Sn2: Sn 0.4_ | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 16; `ORC-YCC6JWJSNU` |  |
| Phase transition | 1443.15 K | 1443.15 | L -> Co3Sn2_beta; _L: Sn 0.4; Co3Sn2_beta: Sn 0.4_ | experimental | [2] Liu 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table II, p. 3, row 11; `ORC-KADNYR2KW7` |  |
| Phase transition | 1443.15 K | 1443.15 | congruent melting: L -> βCo3Sn2; _L: Sn 0.4; βCo3Sn2: Sn 0.4_ | experimental | [3] Jiang 2004; _cites Ishida 1991_ [doi](https://doi.org/10.1007/bf02663681) | Table 1, p. 3, row 7; `ORC-PUHTL5LSYH` |  |
| Phase transition | 1454.15 K | 1454.15 | congruent melting: L -> βCo3Sn2; _L: Sn 0.4; βCo3Sn2: Sn 0.4_ | model | [3] Jiang 2004 | Table 1, p. 3, row 9; `ORC-HQRVJOXJRV` |  |
| Phase transition | 1472.15 K | 1472.15 | L -> Co3Sn2_beta; _L: Sn 0.4; Co3Sn2_beta: Sn 0.4_ | model | [2] Liu 2004 | Table II, p. 3, row 10; `ORC-62267LHTPC` |  |
| Phase transition | 1473.15 K | 1473.15 | L -> Co3Sn2_beta; _L: Sn 0.4; Co3Sn2_beta: Sn 0.4_ | unspecified | [2] Liu 2004; _cites Okamato 1993_ | Table II, p. 3, row 12; `ORC-MXD354NBJB` |  |
| Phase transition | 1473.15 K | 1473.15 | congruent melting: L -> βCo3Sn2; _L: Sn 0.4; βCo3Sn2: Sn 0.4_ | experimental | [3] Jiang 2004; _cites Comert 1992_ [doi](https://doi.org/10.1007/bf02658043) | Table 1, p. 3, row 8; `ORC-I4RIX36LF4` |  |

### Mixing / partial (2)

Table: Mixing / partial, Co–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Partial enthalpy; _printed: partial mixing enthalpy_ | 11.96 kJ/mol-atom | 874 |  | experimental | [3] Jiang 2004; _cites Torgersen 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2900887-2) | p. 3; `ORC-SACDPW63FZ.bdb316` | “By using drop calorimetry, Torgersen et al. \[28\] determined the partial mixing enthalpy of Co in infinite dilute Sn melt at 874 and 1173 K. With solid Co at 298 K as reference state, the value is 11.96 kJ/mol-atoms at 874 K and 32 kJ/mol-atoms at 1173 K.” |
| Partial enthalpy; _printed: partial mixing enthalpy_ | 32 kJ/mol-atom | 1173 |  | experimental | [3] Jiang 2004; _cites Torgersen 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2900887-2) | p. 3; `ORC-SACDPW63FZ.92a9ec` | “By using drop calorimetry, Torgersen et al. \[28\] determined the partial mixing enthalpy of Co in infinite dilute Sn melt at 874 and 1173 K. With solid Co at 298 K as reference state, the value is 11.96 kJ/mol-atoms at 874 K and 32 kJ/mol-atoms at 1173 K.” |

### Crystal structure (24)

Table: Crystal structure, Co–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a; _printed: a_ | 3.362 Å | 0 | NiAs-type CoSn; _alloy: Co 0.5, Sn 0.5_ | DFT | [4] Dong 2009 | Table II, p. 4, row 1; `ORC-YS4DNAWQFT.c5f5ad` |  |
| Lattice a; _printed: a_ | 6.051 Å | 0 | PdSn4 type, AuSn4; _alloy: Co 0, Sn 0.8_ | DFT | [4] Dong 2009 | Table II, p. 4, row 9; `ORC-544FIMDRHF.6c306b` |  |
| Lattice a | 5.234 Å | 298.15 | CoSn; _alloy: Co 0.5, Sn 0.5_ | unspecified | [5] Hu 2022; _cites Mikhaylushkin 2008_ [doi](https://doi.org/10.1103/physrevb.77.014102) | Table 1, p. 3, row 3; `ORC-ZC4MQXMEFO.793fa5` |  |
| Lattice a | 6.361 Å | 298.15 | CoSn2; _alloy: Co 0.333333, Sn 0.666667_ | experimental | [5] Hu 2022; _cites Armbruster 2007_ | Table 1, p. 3, row 4; `ORC-ZNYILAIC7X.68f85d` |  |
| Lattice a | 7.085 Å | 298.15 | αCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 1; `ORC-UTGGZMLSJK.9a7711` |  |
| Lattice a | 16.864 Å | 298.15 | αCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 5; `ORC-QVEPI2BRLZ.a6d3e0` |  |
| Lattice a | 4.162 Å | 298.15 | βCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 2; `ORC-QTJWCJNHAS.ca2519` |  |
| Lattice a | 6.275 Å | 298.15 | βCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 6; `ORC-YG7CXOKNAJ.632ad8` |  |
| Lattice b; _printed: b_ | 1.94 Å | 0 | NiAs-type CoSn; _alloy: Co 0.5, Sn 0.5_ | DFT | [4] Dong 2009 | Table II, p. 4, row 1; `ORC-YS4DNAWQFT.100e0c` |  |
| Lattice b; _printed: b_ | 3.032 Å | 0 | PdSn4 type, AuSn4; _alloy: Co 0, Sn 0.8_ | DFT | [4] Dong 2009 | Table II, p. 4, row 9; `ORC-544FIMDRHF.ab29a2` |  |
| Lattice b | 5.234 Å | 298.15 | CoSn; _alloy: Co 0.5, Sn 0.5_ | unspecified | [5] Hu 2022; _cites Mikhaylushkin 2008_ [doi](https://doi.org/10.1103/physrevb.77.014102) | Table 1, p. 3, row 3; `ORC-ZC4MQXMEFO.241167` |  |
| Lattice b | 6.361 Å | 298.15 | CoSn2; _alloy: Co 0.333333, Sn 0.666667_ | experimental | [5] Hu 2022; _cites Armbruster 2007_ | Table 1, p. 3, row 4; `ORC-ZNYILAIC7X.5cb895` |  |
| Lattice b | 5.216 Å | 298.15 | αCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 1; `ORC-UTGGZMLSJK.304f68` |  |
| Lattice b | 6.268 Å | 298.15 | αCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 5; `ORC-QVEPI2BRLZ.cfaf9e` |  |
| Lattice b | 4.162 Å | 298.15 | βCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 2; `ORC-QTJWCJNHAS.5f009f` |  |
| Lattice b | 6.275 Å | 298.15 | βCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 6; `ORC-YG7CXOKNAJ.cb8660` |  |
| Lattice c; _printed: c_ | 5.258 Å | 0 | NiAs-type CoSn; _alloy: Co 0.5, Sn 0.5_ | DFT | [4] Dong 2009 | Table II, p. 4, row 1; `ORC-YS4DNAWQFT.85d440` |  |
| Lattice c; _printed: c_ | 5.98 Å | 0 | PdSn4 type, AuSn4; _alloy: Co 0, Sn 0.8_ | DFT | [4] Dong 2009 | Table II, p. 4, row 9; `ORC-544FIMDRHF.29b107` |  |
| Lattice c | 4.166 Å | 298.15 | CoSn; _alloy: Co 0.5, Sn 0.5_ | unspecified | [5] Hu 2022; _cites Mikhaylushkin 2008_ [doi](https://doi.org/10.1103/physrevb.77.014102) | Table 1, p. 3, row 3; `ORC-ZC4MQXMEFO.f08a9e` |  |
| Lattice c | 5.458 Å | 298.15 | CoSn2; _alloy: Co 0.333333, Sn 0.666667_ | experimental | [5] Hu 2022; _cites Armbruster 2007_ | Table 1, p. 3, row 4; `ORC-ZNYILAIC7X.4cf838` |  |
| Lattice c | 8.194 Å | 298.15 | αCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 1; `ORC-UTGGZMLSJK.9a8377` |  |
| Lattice c | 6.27 Å | 298.15 | αCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 5; `ORC-QVEPI2BRLZ.56e9f6` |  |
| Lattice c | 5.233 Å | 298.15 | βCo3Sn2; _alloy: Co 0.6, Sn 0.4_ | unspecified | [5] Hu 2022; _cites Fjellvag 1986_ [doi](https://doi.org/10.3891/acta.chem.scand.40a-0023) | Table 1, p. 3, row 2; `ORC-QTJWCJNHAS.a425f8` |  |
| Lattice c | 33.742 Å | 298.15 | βCoSn3; _alloy: Co 0.25, Sn 0.75_ | experimental | [5] Hu 2022; _cites Lang 1996_ | Table 1, p. 3, row 6; `ORC-YG7CXOKNAJ.19bca1` |  |

### Other property (1)

Table: Other property, Co–Sn system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Other; _printed: enthalpy difference_ | 12.5 unspecified ± 1.3 | 618.15 |  | experimental | [3] Jiang 2004; _cites Lang 1996_ | p. 2; `ORC-BXSUEQU432` | “Their DTA and DSC measurements further show that the reaction L + CoSn2 ↔ βCoSn3 happens at 345 ± 2 ◦ C with enthalpy difference 12.5 ± 1.3 kJ/mol-atoms, while the transition βCoSn3 ↔ αCoSn3 is at 275 ± 5 ◦ C.” |

## Sources

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

1. V. Jedličková, A. Zemanová, A. Kroupa, The Thermodynamic Assessment of the Co-Sn System, J. Phase Equilib. Diffus. 40, 21-33 (2019). [doi:10.1007/s11669-018-0687-3](https://doi.org/10.1007/s11669-018-0687-3)
2. Libin Liu, Cristina Andersson, Johan Liu, Thermodynamic assessment of the Sn-Co lead-free solder system, Journal of Elec Materi 33, 935-939 (2004). [doi:10.1007/s11664-004-0019-8](https://doi.org/10.1007/s11664-004-0019-8)
3. M. Jiang, J. Sato, I. Ohnuma, R. Kainuma, K. Ishida, A thermodynamic assessment of the Co–Sn system, Calphad 28, 213-220 (2004). [doi:10.1016/j.calphad.2004.08.001](https://doi.org/10.1016/j.calphad.2004.08.001)
4. H. Q. Dong, S. Jin, L. G. Zhang, J. S. Wang, X. M. Tao, H. S. Liu et al., Thermodynamic Assessment of the Au-Co-Sn Ternary System, Journal of Elec Materi 38, 2158-2169 (2009). [doi:10.1007/s11664-009-0874-4](https://doi.org/10.1007/s11664-009-0874-4)
5. Jingxian Hu, Na Su, Xinming Wang, Fucheng Yin, Xuemei Ouyang, Experimental investigation and thermodynamic calculation of the Co–Sn–Bi ternary system, Calphad 77, 102404 (2022). [doi:10.1016/j.calphad.2022.102404](https://doi.org/10.1016/j.calphad.2022.102404)

## 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/).