Cr–Mn phases

11 phases (tier A 7, tier C 1, liquid 1, needs_review 2); 9 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Cr–Mn system page · Markdown · field reference

Phases of the Cr–Mn system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:cr-mn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2186.25 K, x(Mn) 0–1	6	3
CBCC_A12 phase:cr-mn:cbcc-a12	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1078.82 K, x(Mn) 0.92023–1	1	3
CR3MN5 phase:cr-mn:cr3mn5		needs_review	stable in 3 of 3 calculated diagram(s): 300–1197.64 K, x(Mn) 0.625–0.625	1	3
CUB_A13 phase:cr-mn:cub-a13	beta-Mn · A13 · cP20 · P4_132 (213)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1382.07 K, x(Mn) 0.90792–1	4	3
SIGMA_D8B phase:cr-mn:d8b-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1298.32 K, x(Mn) 0.70213–0.81258	0	3
FCC_A1 phase:cr-mn:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 985–1508.44 K, x(Mn) 0.99319–1	1	3
OLD_H_SIGMA phase:cr-mn:h-old-sigma		needs_review	not stable in 1 calculated diagram(s)	0	1
HCP_A3 phase:cr-mn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	3
HIGH_SIGMA phase:cr-mn:high-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 1264.29–1598.47 K, x(Mn) 0.75416–0.81716	5	2
LIQUID phase:cr-mn:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 1508.44–4000 K, x(Mn) 0–1	2	3
SIGMA_OLD phase:cr-mn:old-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1268.28 K, x(Mn) 0.71425–0.81224	0	3

BCC_A2 (Cr–Mn)

Id: phase:cr-mn:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–2186.25 K, x(Mn) 0–1
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:bcc-a2
paper: paper:sha256-85fd53a1a176b694:bcc-A2
tdb: tdb:CrMn-93Lee-LB.tdb:BCC_A2, tdb:CrMn-93Lee-mod.tdb:BCC_A2, tdb:CrMn-93Lee-mod2.tdb:BCC_A2

TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: BCC_A2, type code %B, sha256 7ab2301989a75970…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : CR% MN : VA : !

CrMn-93Lee-mod.tdb: BCC_A2, type code %B, sha256 4dc8f2c0c78c08a0…

40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : CR% MN : VA : !

CrMn-93Lee-mod2.tdb: BCC_A2, type code %B, sha256 fb463c59c8fc41e2…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : CR% MN : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

CBCC_A12 (Cr–Mn)

Id: phase:cr-mn:cbcc-a12; status assigned
Structure: alpha-Mn · A12 · cI58 · I-43m (217); type st:a12-alpha-mn-ci58; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1078.82 K, x(Mn) 0.92023–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:cbcc-a12
paper: paper:sha256-85fd53a1a176b694:cbcc-A12
tdb: tdb:CrMn-93Lee-LB.tdb:CBCC_A12, tdb:CrMn-93Lee-mod.tdb:CBCC_A12, tdb:CrMn-93Lee-mod2.tdb:CBCC_A12

TDB models of CBCC_A12 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: CBCC_A12, type code %A, sha256 7ab2301989a75970…

47: PHASE CBCC_A12 %A 2 1 1 !
48: CONST CBCC_A12 : CR MN : VA : !

CrMn-93Lee-mod.tdb: CBCC_A12, type code %A, sha256 4dc8f2c0c78c08a0…

50: PHASE CBCC_A12 %A 2 1 1 !
51: CONST CBCC_A12 : CR MN : VA : !

CrMn-93Lee-mod2.tdb: CBCC_A12, type code %A, sha256 fb463c59c8fc41e2…

51: PHASE CBCC_A12 %A 2 1 1 !
52: CONST CBCC_A12 : CR MN : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

CR3MN5 (Cr–Mn)

Id: phase:cr-mn:cr3mn5; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
Candidate (literature_printed): alpha-Mn · cI58 — printed with a label mapped to this phase
Candidate (sgte_mmc2): alpha-Mn · A12 · cI58 · I-43m (217) — Hallstedt 2025 mmc2 row for CR3MN5: Cr3Mn5 ?
Stoichiometry: Cr 0.3750, Mn 0.6250
Stability: stable in 3 of 3 calculated diagram(s): 300–1197.64 K, x(Mn) 0.625–0.625
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:cr3mn5
paper: paper:sha256-85fd53a1a176b694:Cr3Mn5
tdb: tdb:CrMn-93Lee-LB.tdb:CR3MN5, tdb:CrMn-93Lee-mod.tdb:CR3MN5, tdb:CrMn-93Lee-mod2.tdb:CR3MN5

TDB models of CR3MN5 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: CR3MN5, type code %, sha256 7ab2301989a75970…

57: PHASE CR3MN5 % 2 3 5 !
58: CONST CR3MN5 : CR : MN : !

CrMn-93Lee-mod.tdb: CR3MN5, type code %, sha256 4dc8f2c0c78c08a0…

60: PHASE CR3MN5 % 2 3 5 !
61: CONST CR3MN5 : CR : MN : !

CrMn-93Lee-mod2.tdb: CR3MN5, type code %, sha256 fb463c59c8fc41e2…

61: PHASE CR3MN5 % 2 3 5 !
62: CONST CR3MN5 : CR : MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

CUB_A13 (Cr–Mn)

Id: phase:cr-mn:cub-a13; status assigned
Structure: beta-Mn · A13 · cP20 · P4_132 (213); type st:a13-beta-mn-cp20; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1382.07 K, x(Mn) 0.90792–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:cub-a13
paper: paper:sha256-85fd53a1a176b694:cub-A13
tdb: tdb:CrMn-93Lee-LB.tdb:CUB_A13, tdb:CrMn-93Lee-mod.tdb:CUB_A13, tdb:CrMn-93Lee-mod2.tdb:CUB_A13

TDB models of CUB_A13 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: CUB_A13, type code %, sha256 7ab2301989a75970…

52: PHASE CUB_A13 % 2 1 1 !
53: CONST CUB_A13 : CR MN : VA : !

CrMn-93Lee-mod.tdb: CUB_A13, type code %, sha256 4dc8f2c0c78c08a0…

55: PHASE CUB_A13 % 2 1 1 !
56: CONST CUB_A13 : CR MN : VA : !

CrMn-93Lee-mod2.tdb: CUB_A13, type code %, sha256 fb463c59c8fc41e2…

56: PHASE CUB_A13 % 2 1 1 !
57: CONST CUB_A13 : CR MN : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

SIGMA_D8B (Cr–Mn)

Id: phase:cr-mn:d8b-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1298.32 K, x(Mn) 0.70213–0.81258
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:cr-mn:d8b-sigma
tdb: tdb:CrMn-93Lee-LB.tdb:SIGMA_D8B, tdb:CrMn-93Lee-mod.tdb:SIGMA_D8B, tdb:CrMn-93Lee-mod2.tdb:SIGMA_D8B

TDB models of SIGMA_D8B (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: SIGMA_D8B, type code %, sha256 7ab2301989a75970…

62: PHASE SIGMA_D8B % 3 10 4 16 !
63: CONST SIGMA_D8B : MN : CR : CR MN : !

CrMn-93Lee-mod.tdb: SIGMA_D8B, type code %, sha256 4dc8f2c0c78c08a0…

65: PHASE SIGMA_D8B % 3 10 4 16 !
66: CONST SIGMA_D8B : MN : CR : CR MN : !

CrMn-93Lee-mod2.tdb: SIGMA_D8B, type code %, sha256 fb463c59c8fc41e2…

66: PHASE SIGMA_D8B % 3 10 4 16 !
67: CONST SIGMA_D8B : MN : CR : CR MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

FCC_A1 (Cr–Mn)

Id: phase:cr-mn:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 985–1508.44 K, x(Mn) 0.99319–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:fcc-a1
paper: paper:sha256-85fd53a1a176b694:fcc-A1
tdb: tdb:CrMn-93Lee-LB.tdb:FCC_A1, tdb:CrMn-93Lee-mod.tdb:FCC_A1, tdb:CrMn-93Lee-mod2.tdb:FCC_A1

TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: FCC_A1, type code %A, sha256 7ab2301989a75970…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : CR MN% : VA : !

CrMn-93Lee-mod.tdb: FCC_A1, type code %A, sha256 4dc8f2c0c78c08a0…

35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : CR MN% : VA : !

CrMn-93Lee-mod2.tdb: FCC_A1, type code %A, sha256 fb463c59c8fc41e2…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : CR MN% : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

OLD_H_SIGMA (Cr–Mn)

Id: phase:cr-mn:h-old-sigma; status needs_review
No structure assigned. Why: unrecognised_name_tokens:H
Candidate (name_token): sigma-CrFe · D8_b · tP30 · P4_2/mnm (136) — Strukturbericht/word 'D8B' in the TDB name
Candidate (tdb_comment): CrFe · tP30 · P4_2/mnm, D8b — CrMn-93Lee-mod.tdb: 'Prototype CrFe (tP30, P4_2/mnm, D8b)'
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cr-mn:h-old-sigma
tdb: tdb:CrMn-93Lee-mod.tdb:OLD_H_SIGMA

TDB models of OLD_H_SIGMA (1): PHASE and CONSTITUENT statements as written

CrMn-93Lee-mod.tdb: OLD_H_SIGMA, type code %, sha256 4dc8f2c0c78c08a0…

80: PHASE OLD_H_SIGMA % 3 8 4 18 !
81: CONST OLD_H_SIGMA : MN : CR : CR MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

HCP_A3 (Cr–Mn)

Id: phase:cr-mn:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: not stable in 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:cr-mn:hcp-a3
tdb: tdb:CrMn-93Lee-LB.tdb:HCP_A3, tdb:CrMn-93Lee-mod.tdb:HCP_A3, tdb:CrMn-93Lee-mod2.tdb:HCP_A3

TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: HCP_A3, type code %A, sha256 7ab2301989a75970…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : CR MN : VA : !

CrMn-93Lee-mod.tdb: HCP_A3, type code %A, sha256 4dc8f2c0c78c08a0…

45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : CR MN : VA : !

CrMn-93Lee-mod2.tdb: HCP_A3, type code %A, sha256 fb463c59c8fc41e2…

46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : CR MN : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

HIGH_SIGMA (Cr–Mn)

Id: phase:cr-mn:high-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:HIGH); structure as stated in the SGTE crystallographic table for this phase name and system
Stability: stable in 2 of 2 calculated diagram(s): 1264.29–1598.47 K, x(Mn) 0.75416–0.81716
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:cr-mn:high-sigma
paper: paper:sha256-85fd53a1a176b694:σ-H
tdb: tdb:CrMn-93Lee-LB.tdb:HIGH_SIGMA, tdb:CrMn-93Lee-mod.tdb:HIGH_SIGMA

TDB models of HIGH_SIGMA (2): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: HIGH_SIGMA, type code %, sha256 7ab2301989a75970…

72: PHASE HIGH_SIGMA % 3 8 4 18 !
73: CONST HIGH_SIGMA : MN : CR : CR MN : !

CrMn-93Lee-mod.tdb: HIGH_SIGMA, type code %, sha256 4dc8f2c0c78c08a0…

75: PHASE HIGH_SIGMA % 3 10 4 16 !
76: CONST HIGH_SIGMA : MN : CR : CR MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

LIQUID (Cr–Mn)

Id: phase:cr-mn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 1508.44–4000 K, x(Mn) 0–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:cr-mn:liquid
paper: paper:sha256-85fd53a1a176b694:L
tdb: tdb:CrMn-93Lee-LB.tdb:LIQUID, tdb:CrMn-93Lee-mod.tdb:LIQUID, tdb:CrMn-93Lee-mod2.tdb:LIQUID

TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: LIQUID, type code %, sha256 7ab2301989a75970…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : CR MN : !

CrMn-93Lee-mod.tdb: LIQUID, type code %, sha256 4dc8f2c0c78c08a0…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : CR MN : !

CrMn-93Lee-mod2.tdb: LIQUID, type code %, sha256 fb463c59c8fc41e2…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : CR MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

SIGMA_OLD (Cr–Mn)

Id: phase:cr-mn:old-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1268.28 K, x(Mn) 0.71425–0.81224
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:cr-mn:old-sigma
tdb: tdb:CrMn-93Lee-LB.tdb:SIGMA_OLD, tdb:CrMn-93Lee-mod.tdb:SIGMA_OLD, tdb:CrMn-93Lee-mod2.tdb:SIGMA_OLD

TDB models of SIGMA_OLD (3): PHASE and CONSTITUENT statements as written

CrMn-93Lee-LB.tdb: SIGMA_OLD, type code %, sha256 7ab2301989a75970…

67: PHASE SIGMA_OLD % 3 8 4 18 !
68: CONST SIGMA_OLD : MN : CR : CR MN : !

CrMn-93Lee-mod.tdb: SIGMA_OLD, type code %, sha256 4dc8f2c0c78c08a0…

70: PHASE SIGMA_OLD % 3 8 4 18 !
71: CONST SIGMA_OLD : MN : CR : CR MN : !

CrMn-93Lee-mod2.tdb: SIGMA_OLD, type code %, sha256 fb463c59c8fc41e2…

71: PHASE SIGMA_OLD % 3 8 4 18 !
72: CONST SIGMA_OLD : MN : CR : CR MN : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02666327 B.-J. Lee, Metall. Trans. A, 24, 1919-33(1993).
assessment that models this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@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}
}