Cu–Mn system

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 · CSV · interactive explorer · interactive phase diagram · phases (6) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	18
model	9

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.

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	`9a63b9bd45d2e41a2e3a8fc9b9c3f439bdf18f3fab5178ae9bf507eea7def8b3`	viewer · TDB · 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	`75738f083895098144cd25afde122ceebb567a36bcf01d65d92bcf22683bc30c`	viewer · TDB · 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	`fff8bb27170f55ce1be52f530181e7e364bd89849f63cf921962d5589ce8ee09`	viewer · TDB · JSON

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 · OQMD DFT hull · CALPHAD hull CuMn-03Mie-LB · CALPHAD hull CuMn-07Wan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Cu–Mn system (16)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
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 report
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 report
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 report
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 report
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	Table 3, p. 4, row 2 report
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 report
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 report
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 report
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 report
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 report
998.15	FCC_A1 + CUB_A13 = CBCC_A12		experimental	[1] He 2008	Table 3, p. 4, row 5 report
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 report
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 report
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 report
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 report
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 report

Other properties

Phase transition (3)

Phase transition, Cu–Mn system
Property	Value	T (K)	Phases / composition	Class	Source	Location
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 report
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 report
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 report

Phase equilibrium (8)

Phase equilibrium, Cu–Mn system
Property	T (K)	Phases / composition	Class	Source	Location
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 report
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 report
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 report
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 report
Phase assemblage	1073.15	FCC_A1 alloy: Cu 0.83, Mn 0.17	experimental	[1] He 2008	Table 1, p. 2, row 1 report
Phase assemblage	1073.15	FCC_A1 alloy: Cu 0.61, Mn 0.39	experimental	[1] He 2008	Table 1, p. 2, row 3 report
Phase assemblage	1073.15	FCC_A1 alloy: Cu 0.74, Mn 0.26	experimental	[1] He 2008	Table 1, p. 2, row 2 report
Phase assemblage	1073.15	FCC_A1 alloy: Cu 0.48, Mn 0.52	experimental	[1] He 2008	Table 1, p. 2, row 4 report

Sources

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

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
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

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi: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). doi: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). doi: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.

@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}
}