# Cu–Mn system > Cu–Mn system: 27 accepted literature values (invariant reaction 16, phase equilibrium 8, phase transition 3) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/CU-MN.html · Markdown: https://data.orchid-project.org/systems/CU-MN.md 27 accepted literature values from 2 paper(s) (experimental 18, model 9); 3 calculated phase diagram(s). 17 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/CU-MN.json) · [CSV](https://data.orchid-project.org/systems/CU-MN.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CU-MN) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CU-MN/CuMn-03Mie-LB.json) · [phases (6)](https://data.orchid-project.org/phases/pages/CU-MN.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CU-MN.html) · [Markdown](https://data.orchid-project.org/systems/CU-MN.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 18 | | model | 9 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 16 | | phase transition | 3 | | phase equilibrium | 8 | ## 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 | |---|---|---|---| | CuMn-03Mie-LB.tdb | J. Miettinen, Calphad, 27, 103-14(2003). [doi:10.1016/S0364-5916(03)00035-X](https://doi.org/10.1016/S0364-5916%2803%2900035-X) | `9a63b9bd45d2e41a2e3a8fc9b9c3f439bdf18f3fab5178ae9bf507eea7def8b3` | [viewer](https://orchid-project.org/phase-diagrams/#CU-MN/CuMn-03Mie-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuMn-03Mie-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuMn-03Mie-LB.json) | | CuMn-07Wan.tdb | C.P. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, K. Ishida, J. Alloys Compd., 438, 129-41(2007). [doi:10.1016/j.jallcom.2006.08.018](https://doi.org/10.1016/j.jallcom.2006.08.018) | `75738f083895098144cd25afde122ceebb567a36bcf01d65d92bcf22683bc30c` | [viewer](https://orchid-project.org/phase-diagrams/#CU-MN/CuMn-07Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuMn-07Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuMn-07Wan.json) | | CuMn-08He.tdb | C. He, Y. Du, H.-L. Chen, S. Liu, H. Xu, Y. Ouyang, Z.-K. Liu, J. Alloys Compd., 457, 233-38(2008). [doi:10.1016/j.jallcom.2007.03.041](https://doi.org/10.1016/j.jallcom.2007.03.041) | `fff8bb27170f55ce1be52f530181e7e364bd89849f63cf921962d5589ce8ee09` | [viewer](https://orchid-project.org/phase-diagrams/#CU-MN/CuMn-08He.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuMn-08He.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuMn-08He.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | CuMn-03Mie-LB.tdb | 1372.83 | LIQUID (x(Mn) 0.73134) + BCC_A2 (x(Mn) 0.89172) + FCC_A1 (x(Mn) 0.90243) | | CuMn-03Mie-LB.tdb | 977.03 | FCC_A1 (x(Mn) 0.79458) + CUB_A13 (x(Mn) 0.9949) + CBCC_A12 (x(Mn) 0.99577) | | CuMn-03Mie-LB.tdb | 977.03 | FCC_A1 (x(Mn) 0.79459) + CUB_A13 (x(Mn) 0.9949) + CBCC_A12 (x(Mn) 0.99577) | | CuMn-07Wan.tdb | 1373.5 | LIQUID (x(Mn) 0.73975) + BCC_A2 (x(Mn) 0.84894) + FCC_A1 (x(Mn) 0.862) | | CuMn-07Wan.tdb | 976.75 | FCC_A1#2 (x(Mn) 0.73594) + FCC_A1 (x(Mn) 0.77153) + CUB_A13 (x(Mn) 0.99203) | | CuMn-07Wan.tdb | 976.54 | FCC_A1 (x(Mn) 0.72242) + CUB_A13 (x(Mn) 0.99204) + CBCC_A12 (x(Mn) 0.99285) | | CuMn-07Wan.tdb | 976.54 | FCC_A1 (x(Mn) 0.72242) + CUB_A13 (x(Mn) 0.99204) + CBCC_A12 (x(Mn) 0.99285) | | CuMn-08He.tdb | 1368.13 | LIQUID (x(Mn) 0.74718) + BCC_A2 (x(Mn) 0.8761) + FCC_A1 (x(Mn) 0.88802) | | CuMn-08He.tdb | 993.32 | FCC_A1 (x(Mn) 0.74616) + CBCC_A12 (x(Mn) 0.98548) + CUB_A13 (x(Mn) 0.98935) | | CuMn-08He.tdb | 993.32 | FCC_A1 (x(Mn) 0.74616) + CBCC_A12 (x(Mn) 0.98548) + CUB_A13 (x(Mn) 0.98935) | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CU/CU-MN.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CU/CU-MN.json) · [CALPHAD hull CuMn-03Mie-LB](https://data.orchid-project.org/hulls/calphad-sgte/CU/CU-MN--CuMn-03Mie-LB.json) · [CALPHAD hull CuMn-07Wan](https://data.orchid-project.org/hulls/calphad-sgte/CU/CU-MN--CuMn-07Wan.json) ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Cu–Mn system (16) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 1383.15 | BCC_A2 = Liquid + FCC_A1 | BCC_A2: Mn 0.88; Liquid: Mn 0.78; FCC_A1: Mn 0.89 | experimental | [1] He 2008; _cites Grube 1939_ | Table 3, p. 4, row 3; `ORC-6FBWKFA4XA` | | | 1376.15 | Liq - bcc - fcc | Liq: Mn 0.734; bcc: Mn 0.891; fcc: Mn 0.902 | model | [2] Miettinen 2003; _cites ref. 96Vre_ | Table 4, p. 4, row 3; `ORC-NYOI7L5C5I` | | | 1373.15 | Liq - bcc - fcc | Liq: Mn 0.732; bcc: Mn 0.892; fcc: Mn 0.902 | model | [2] Miettinen 2003 | Table 4, p. 4, row 2; `ORC-4SPDGNTVRK` | | | 1373.15 | Liq - bcc - fcc | Liq: Mn 0.762; bcc: Mn 0.875; fcc: Mn 0.885 | experimental | [2] Miettinen 2003; _cites ref. 94Goc_ | Table 4, p. 4, row 1; `ORC-A7N6DZTWBO` | | | 1371.15 | BCC_A2 = Liquid + FCC_A1 | BCC_A2: Mn 0.875; Liquid: Mn 0.76; FCC_A1: Mn 0.882 | experimental | [1] He 2008; _cites Hellawell 1957_ [doi](https://doi.org/10.1098/rsta.1957.0004) | Table 3, p. 4, row 2; `ORC-C6N5B4KSEK` | | | 1369.15 | BCC_A2 = Liquid + FCC_A1 | BCC_A2: Mn 0.877; Liquid: Mn 0.749; FCC_A1: Mn 0.889 | model | [1] He 2008 | Table 3, p. 4, row 1; `ORC-LIWWZU4NPY` | | | 1146.65 | congruent melting: Liquid = FCC_A1 | Liquid: Mn 0.39; FCC_A1: Mn 0.39 | experimental | [1] He 2008 | Table 3, p. 4, row 9; `ORC-ERESZ2UWVB` | | | 1146.15 | congruent melting: Liquid = FCC_A1 | Liquid: Mn 0.384; FCC_A1: Mn 0.384 | model | [1] He 2008 | Table 3, p. 4, row 8; `ORC-FEP23SGWYM` | | | 1141.15 | congruent melting: Liquid = FCC_A1 | Liquid: Mn 0.38; FCC_A1: Mn 0.38 | experimental | [1] He 2008; _cites Grube 1939_ | Table 3, p. 4, row 10; `ORC-Y4X3N62RVE` | | | 1023.15 | FCC_A1 + CUB_A13 = CBCC_A12 | FCC_A1: Mn 0.65; CUB_A13: Mn 1; CBCC_A12: Mn 1 | experimental | [1] He 2008; _cites Grube 1939_ | Table 3, p. 4, row 6; `ORC-OGP7BWSLGX` | | | 998.15 | FCC_A1 + CUB_A13 = CBCC_A12 | | experimental | [1] He 2008 | Table 3, p. 4, row 5; `ORC-NXGRL4E5Q4` | | | 998.15 | Fcc - cub - cbcc | Fcc: Mn 0.78; cub: Mn 0.996; cbcc: Mn 0.997 | experimental | [2] Miettinen 2003; _cites ref. 94Goc_ | Table 4, p. 4, row 7; `ORC-YPWDPFVH4I` | | | 994.15 | FCC_A1 + CUB_A13 = CBCC_A12 | FCC_A1: Mn 0.776; CUB_A13: Mn 0.99; CBCC_A12: Mn 0.985 | model | [1] He 2008 | Table 3, p. 4, row 4; `ORC-MS5BUYN47Q` | | | 980.15 | Fcc - cub - cbcc | Fcc: Mn 0.893; cub: Mn 1; cbcc: Mn 1 | model | [2] Miettinen 2003; _cites ref. 96Vre_ | Table 4, p. 4, row 9; `ORC-UYBRNTBKIQ` | | | 978.15 | FCC_A1 + CUB_A13 = CBCC_A12 | FCC_A1: Mn 0.67; CUB_A13: Mn 1; CBCC_A12: Mn 1 | experimental | [1] He 2008; _cites Dean 1945_ | Table 3, p. 4, row 7; `ORC-4YO3SDTAVL` | | | 977.15 | Fcc - cub - cbcc | Fcc: Mn 0.784; cub: Mn 0.995; cbcc: Mn 0.996 | model | [2] Miettinen 2003 | Table 4, p. 4, row 8; `ORC-LIHNCVK6N2` | | ## Other properties ### Phase transition (3) Table: Phase transition, Cu–Mn system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase transition | 1146.15 K | 1146.15 | congruent melting: Liq - fcc (congruent point); _Liq: Mn 0.38; fcc: Mn 0.38_ | experimental | [2] Miettinen 2003; _cites ref. 94Goc_ | Table 4, p. 4, row 4; `ORC-55CSJH3RAQ` | | | Phase transition | 1152.15 K | 1152.15 | congruent melting: Liq - fcc (congruent point); _Liq: Mn 0.38; fcc: Mn 0.38_ | model | [2] Miettinen 2003 | Table 4, p. 4, row 5; `ORC-DRLLL6ABYL` | | | Phase transition | 1154.15 K | 1154.15 | congruent melting: Liq - fcc (congruent point); _Liq: Mn 0.369; fcc: Mn 0.369_ | model | [2] Miettinen 2003; _cites ref. 96Vre_ | Table 4, p. 4, row 6; `ORC-FROYQPCXLL` | | ### Phase equilibrium (8) Table: Phase equilibrium, Cu–Mn system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase assemblage | | 923.15 | FCC_A1 + CBCC_A12; _alloy: Cu 0.2, Mn 0.8_ | experimental | [1] He 2008 | Table 1, p. 2, row 6; `ORC-R2HY5Z3KGA` | | | Phase assemblage | | 923.15 | FCC_A1 + CBCC_A12; _alloy: Cu 0.13, Mn 0.87_ | experimental | [1] He 2008 | Table 1, p. 2, row 7; `ORC-RQ7SZSUGBV` | | | Phase assemblage | | 923.15 | FCC_A1 + CBCC_A12; _alloy: Cu 0.07, Mn 0.93_ | experimental | [1] He 2008 | Table 1, p. 2, row 8; `ORC-V263B6UQDB` | | | Phase assemblage | | 923.15 | FCC_A1 + CBCC_A12; _alloy: Cu 0.4, Mn 0.6_ | experimental | [1] He 2008 | Table 1, p. 2, row 5; `ORC-ZHEBXIUIY6` | | | Phase assemblage | | 1073.15 | FCC_A1; _alloy: Cu 0.83, Mn 0.17_ | experimental | [1] He 2008 | Table 1, p. 2, row 1; `ORC-6EQQXSNBDJ` | | | Phase assemblage | | 1073.15 | FCC_A1; _alloy: Cu 0.61, Mn 0.39_ | experimental | [1] He 2008 | Table 1, p. 2, row 3; `ORC-LGI2NIZZOI` | | | Phase assemblage | | 1073.15 | FCC_A1; _alloy: Cu 0.74, Mn 0.26_ | experimental | [1] He 2008 | Table 1, p. 2, row 2; `ORC-MQ3XG7AAUA` | | | Phase assemblage | | 1073.15 | FCC_A1; _alloy: Cu 0.48, Mn 0.52_ | experimental | [1] He 2008 | Table 1, p. 2, row 4; `ORC-ZAPTPRS6PQ` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Cuiyun He, Yong Du, Hai-Lin Chen, Shuhong Liu, Honghui Xu, Yifang Ouyang et al., Thermodynamic modeling of the Cu–Mn system supported by key experiments, Journal of Alloys and Compounds 457, 233-238 (2008). [doi:10.1016/j.jallcom.2007.03.041](https://doi.org/10.1016/j.jallcom.2007.03.041) 2. J. Miettinen, Thermodynamic description of the CuAlMn system in the copper-rich corner, Calphad 27, 103-114 (2003). [doi:10.1016/s0364-5916(03)00035-x](https://doi.org/10.1016/s0364-5916%2803%2900035-x) ## 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=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).