# Cr–S phases > Cr–S system: 14 phases (tier A 5, tier C 5, liquid 1, gas 1, needs_review 2); 10 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/CR-S.html · Markdown: https://data.orchid-project.org/phases/pages/CR-S.md 14 phases (tier A 5, tier C 5, liquid 1, gas 1, needs_review 2); 10 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](https://orchid-project.org/phases/?q=CR-S) · [full JSON](https://data.orchid-project.org/phases/systems/CR-S.json) · [Cr–S system page](https://data.orchid-project.org/systems/CR-S.html) · [Markdown](https://data.orchid-project.org/phases/pages/CR-S.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Cr–S system (14) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [ORTHORHOMBIC_A16](#phase-cr-s-a16-orthorhombic); _phase:cr-s:a16-orthorhombic_ | alpha-S · A16 · oF128 · Fddd (70) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–385.34 K, x(S) 1–1 | 0 | 2 | | [BCC_A2](#phase-cr-s-bcc-a2); _phase:cr-s:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–4000 K, x(S) 0–0.55708 | 0 | 2 | | [CR2S3_HT](#phase-cr-s-cr2s3-ht); _phase:cr-s:cr2s3-ht_ | Cr2S3-ht · hR10 · R-3 (148) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | not stable in 1 calculated diagram(s) | 0 | 1 | | [CR2S3_LT](#phase-cr-s-cr2s3-lt); _phase:cr-s:cr2s3-lt_ | Cr2S3-lt · hP20 · P-31c (163) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1175.1 K, x(S) 0.6–0.6 | 0 | 1 | | [CR3S4](#phase-cr-s-cr3s4); _phase:cr-s:cr3s4_ | Cr3S4 · mC14 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1236.13 K, x(S) 0.57143–0.57143 | 0 | 1 | | [CR5S6](#phase-cr-s-cr5s6); _phase:cr-s:cr5s6_ | Cr5S6 · hP22 · P-31c (163) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–612.97 K, x(S) 0.54545–0.54545 | 0 | 1 | | [CR7S8](#phase-cr-s-cr7s8); _phase:cr-s:cr7s8_ | Cr7Se8 · mC30 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–600.72 K, x(S) 0.53333–0.53333 | 0 | 1 | | [CRS_LT](#phase-cr-s-crs); _phase:cr-s:crs_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–886.35 K, x(S) 0.49261–0.49261 | 0 | 1 | | [CRS_B81](#phase-cr-s-crs-b81); _phase:cr-s:crs-b81_ | NiAs · B8_1 · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1847.97 K, x(S) 0.5–0.53243 | 0 | 2 | | [FCC_A1](#phase-cr-s-fcc-a1); _phase:cr-s:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 | | [GAS](#phase-cr-s-gas); _phase:cr-s:gas_ | gas | gas | stable in 2 of 2 calculated diagram(s): 725.1–4000 K, x(S) 1–1 | 0 | 2 | | [HCP_A3](#phase-cr-s-hcp-a3); _phase:cr-s:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 | | [LIQUID](#phase-cr-s-liquid); _phase:cr-s:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 384.27–4000 K, x(S) 0–1 | 0 | 2 | | [MONOCLINIC_S](#phase-cr-s-s-monoclinic); _phase:cr-s:s-monoclinic_ | | needs_review | not stable in 2 calculated diagram(s) | 0 | 2 | ## ORTHORHOMBIC_A16 (Cr–S) - Id: `phase:cr-s:a16-orthorhombic`; status `assigned` - Structure: alpha-S · A16 · oF128 · Fddd (70); type `st:a16-alpha-s-of128`; tier A: standard phase name; confidence high - Stoichiometry: S 1.0000 - Stability: stable in 2 of 2 calculated diagram(s): 300–385.34 K, x(S) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:a16-orthorhombic) Names (3): _corpus: _corpus:phase:cr-s:a16-orthorhombic _tdb: _tdb:CrS-00Oik.tdb:ORTHORHOMBIC_A16, tdb:CrS-17Jan.tdb:ORTHORHOMBIC_A16 ### TDB models of ORTHORHOMBIC_A16 (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): ORTHORHOMBIC_A16, type code %, sha256 `c922c6ce57870188…` ~~~~text 59: PHASE ORTHORHOMBIC_A16 % 1 1 ! 60: CONST ORTHORHOMBIC_A16 : S : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): ORTHORHOMBIC_A16, type code %, sha256 `9031e59c6c495b89…` ~~~~text 64: PHASE ORTHORHOMBIC_A16 % 1 1 ! 65: CONST ORTHORHOMBIC_A16 : S : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## BCC_A2 (Cr–S) - Id: `phase:cr-s: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 2 of 2 calculated diagram(s): 300–4000 K, x(S) 0–0.55708 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:bcc-a2) Names (3): _corpus: _corpus:phase:cr-s:bcc-a2 _tdb: _tdb:CrS-00Oik.tdb:BCC_A2, tdb:CrS-17Jan.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): BCC_A2, type code %B, sha256 `c922c6ce57870188…` ~~~~text 49: PHASE BCC_A2 %B 2 1 3 ! 50: CONST BCC_A2 : CR : S VA% : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): BCC_A2, type code %B, sha256 `9031e59c6c495b89…` ~~~~text 54: PHASE BCC_A2 %B 2 1 3 ! 55: CONST BCC_A2 : CR : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## CR2S3_HT (Cr–S) - Id: `phase:cr-s:cr2s3-ht`; status `assigned` - Structure: Cr2S3-ht · hR10 · R-3 (148); type `st:cr2s3-ht-hr10`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cr 0.4000, S 0.6000 - Stability: not stable in 1 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:cr2s3-ht) Names (2): _corpus: _corpus:phase:cr-s:cr2s3-ht _tdb: _tdb:CrS-17Jan.tdb:CR2S3_HT ### TDB models of CR2S3_HT (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CR2S3_HT, type code %, sha256 `9031e59c6c495b89…` ~~~~text 104: PHASE CR2S3_HT % 2 2 3 ! 105: CONST CR2S3_HT : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CR2S3_LT (Cr–S) - Id: `phase:cr-s:cr2s3-lt`; status `assigned` - Structure: Cr2S3-lt · hP20 · P-31c (163); type `st:cr2s3-lt-hp20`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cr 0.4000, S 0.6000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1175.1 K, x(S) 0.6–0.6 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:cr2s3-lt) Names (2): _corpus: _corpus:phase:cr-s:cr2s3-lt _tdb: _tdb:CrS-17Jan.tdb:CR2S3_LT ### TDB models of CR2S3_LT (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CR2S3_LT, type code %, sha256 `9031e59c6c495b89…` ~~~~text 99: PHASE CR2S3_LT % 2 2 3 ! 100: CONST CR2S3_LT : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CR3S4 (Cr–S) - Id: `phase:cr-s:cr3s4`; status `assigned` - Structure: Cr3S4 · mC14 · C2/m (12); type `st:cr3s4-mc14`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cr 0.4286, S 0.5714 - Stability: stable in 1 of 1 calculated diagram(s): 300–1236.13 K, x(S) 0.57143–0.57143 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:cr3s4) Names (2): _corpus: _corpus:phase:cr-s:cr3s4 _tdb: _tdb:CrS-17Jan.tdb:CR3S4 ### TDB models of CR3S4 (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CR3S4, type code %, sha256 `9031e59c6c495b89…` ~~~~text 94: PHASE CR3S4 % 2 3 4 ! 95: CONST CR3S4 : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CR5S6 (Cr–S) - Id: `phase:cr-s:cr5s6`; status `assigned` - Structure: Cr5S6 · hP22 · P-31c (163); type `st:cr5s6-hp22`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cr 0.4545, S 0.5455 - Stability: stable in 1 of 1 calculated diagram(s): 300–612.97 K, x(S) 0.54545–0.54545 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:cr5s6) Names (2): _corpus: _corpus:phase:cr-s:cr5s6 _tdb: _tdb:CrS-17Jan.tdb:CR5S6 ### TDB models of CR5S6 (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CR5S6, type code %, sha256 `9031e59c6c495b89…` ~~~~text 89: PHASE CR5S6 % 2 5 6 ! 90: CONST CR5S6 : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CR7S8 (Cr–S) - Id: `phase:cr-s:cr7s8`; status `assigned` - Structure: Cr7Se8 · mC30 · C2/m (12); type `st:cr7se8-mc30`; 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](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cr 0.4667, S 0.5333 - Stability: stable in 1 of 1 calculated diagram(s): 300–600.72 K, x(S) 0.53333–0.53333 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:cr7s8) Names (2): _corpus: _corpus:phase:cr-s:cr7s8 _tdb: _tdb:CrS-17Jan.tdb:CR7S8 ### TDB models of CR7S8 (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CR7S8, type code %, sha256 `9031e59c6c495b89…` ~~~~text 84: PHASE CR7S8 % 2 7 8 ! 85: CONST CR7S8 : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CRS_LT (Cr–S) - Id: `phase:cr-s:crs`; status `needs_review` - No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_on_hull_entry_in_both; no_structure_token - Candidate (sgte_mmc2): CrS-lt · mC8 · C2/c (15) — Hallstedt 2025 mmc2 row for CRS_LT: CrS (low T) - Candidate (tdb_comment): CrS-lt · mC8 · C2/c, 15 — CrS-17Jan.tdb: 'Prototype CrS-lt (mC8, C2/c, 15)' - Stoichiometry: Cr 0.5074, S 0.4926 - Stability: stable in 1 of 1 calculated diagram(s): 300–886.35 K, x(S) 0.49261–0.49261 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:crs) Names (2): _corpus: _corpus:phase:cr-s:crs _tdb: _tdb:CrS-17Jan.tdb:CRS_LT ### TDB models of CRS_LT (1): PHASE and CONSTITUENT statements as written [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CRS_LT, type code %, sha256 `9031e59c6c495b89…` ~~~~text 74: PHASE CRS_LT % 2 1.03 1 ! 75: CONST CRS_LT : CR : S : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ ## CRS_B81 (Cr–S) - Id: `phase:cr-s:crs-b81`; status `assigned` - Structure: NiAs · B8_1 · hP4 · P6_3/mmc (194); type `st:b8-1-nias-hp4`; tier A: standard phase name; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 300–1847.97 K, x(S) 0.5–0.53243 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:crs-b81) Names (3): _corpus: _corpus:phase:cr-s:crs-b81 _tdb: _tdb:CrS-00Oik.tdb:CRS_B81, tdb:CrS-17Jan.tdb:CRS_B81 ### TDB models of CRS_B81 (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): CRS_B81, type code %, sha256 `c922c6ce57870188…` ~~~~text 69: PHASE CRS_B81 % 2 1 1 ! 70: CONST CRS_B81 : CR : S : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): CRS_B81, type code %, sha256 `9031e59c6c495b89…` ~~~~text 79: PHASE CRS_B81 % 2 1 1 ! 80: CONST CRS_B81 : CR% VA : S : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## FCC_A1 (Cr–S) - Id: `phase:cr-s:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high - Stability: not stable in 2 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:fcc-a1) Names (3): _corpus: _corpus:phase:cr-s:fcc-a1 _tdb: _tdb:CrS-00Oik.tdb:FCC_A1, tdb:CrS-17Jan.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): FCC_A1, type code %A, sha256 `c922c6ce57870188…` ~~~~text 44: PHASE FCC_A1 %A 2 1 1 ! 45: CONST FCC_A1 : CR : S VA% : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): FCC_A1, type code %A, sha256 `9031e59c6c495b89…` ~~~~text 49: PHASE FCC_A1 %A 2 1 1 ! 50: CONST FCC_A1 : CR : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## GAS (Cr–S) - Id: `phase:cr-s:gas`; status `assigned` - Structure: gas; type `st:gas`; gas; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 725.1–4000 K, x(S) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:gas) Names (3): _corpus: _corpus:phase:cr-s:gas _tdb: _tdb:CrS-00Oik.tdb:GAS, tdb:CrS-17Jan.tdb:GAS ### TDB models of GAS (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): GAS, type code %, sha256 `c922c6ce57870188…` ~~~~text 72: PHASE GAS:G % 1 1 ! 73: CONST GAS:G : S S2 S3 S4 S5 S6 S7 S8 : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): GAS, type code %, sha256 `9031e59c6c495b89…` ~~~~text 107: PHASE GAS:G % 1 1 ! 108: CONST GAS:G : S S2 S3 S4 S5 S6 S7 S8 : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## HCP_A3 (Cr–S) - Id: `phase:cr-s:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stoichiometry: Cr 1.0000 - Stability: not stable in 2 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:hcp-a3) Names (3): _corpus: _corpus:phase:cr-s:hcp-a3 _tdb: _tdb:CrS-00Oik.tdb:HCP_A3, tdb:CrS-17Jan.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): HCP_A3, type code %A, sha256 `c922c6ce57870188…` ~~~~text 54: PHASE HCP_A3 %A 2 1 0.5 ! 55: CONST HCP_A3 : CR : VA: ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): HCP_A3, type code %A, sha256 `9031e59c6c495b89…` ~~~~text 59: PHASE HCP_A3 %A 2 1 0.5 ! 60: CONST HCP_A3 : CR : VA: ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## LIQUID (Cr–S) - Id: `phase:cr-s:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 384.27–4000 K, x(S) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:liquid) Names (3): _corpus: _corpus:phase:cr-s:liquid _tdb: _tdb:CrS-00Oik.tdb:LIQUID, tdb:CrS-17Jan.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): LIQUID, type code %, sha256 `c922c6ce57870188…` ~~~~text 39: PHASE LIQUID:L % 1 1 ! 40: CONST LIQUID:L : CR CRS S : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): LIQUID, type code %, sha256 `9031e59c6c495b89…` ~~~~text 44: PHASE LIQUID:L % 1 1 ! 45: CONST LIQUID:L : CR CRS S : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _assessment that models this phase_ ## MONOCLINIC_S (Cr–S) - Id: `phase:cr-s:s-monoclinic`; status `needs_review` - No structure assigned. Why: name_has_descriptive_tokens:MONOCLINIC; no_structure_token - Candidate (sgte_mmc2): beta-S · mP48 · P2_1/c (14) — Hallstedt 2025 mmc2 row for MONOCLINIC_S: beta-S - Candidate (tdb_comment): beta-S · mP48 · P2_1/a — CrS-00Oik.tdb: 'Prototype beta-S (mP48, P2_1/a)' - Candidate (tdb_comment): beta-S · mP48 · P2_1/a — CrS-17Jan.tdb: 'Prototype beta-S (mP48, P2_1/a)' - Stoichiometry: S 1.0000 - Stability: not stable in 2 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-s:s-monoclinic) Names (3): _corpus: _corpus:phase:cr-s:s-monoclinic _tdb: _tdb:CrS-00Oik.tdb:MONOCLINIC_S, tdb:CrS-17Jan.tdb:MONOCLINIC_S ### TDB models of MONOCLINIC_S (2): PHASE and CONSTITUENT statements as written [CrS-00Oik.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-00Oik.tdb): MONOCLINIC_S, type code %, sha256 `c922c6ce57870188…` ~~~~text 64: PHASE MONOCLINIC_S % 1 1 ! 65: CONST MONOCLINIC_S : S : ! ~~~~ [CrS-17Jan.tdb](https://orchid-project.org/data/databases/sgte-binary/CrS-17Jan.tdb): MONOCLINIC_S, type code %, sha256 `9031e59c6c495b89…` ~~~~text 69: PHASE MONOCLINIC_S % 1 1 ! 70: CONST MONOCLINIC_S : S : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.calphad.2016.04.011](https://doi.org/10.1016/j.calphad.2016.04.011) T. Jantzen, K. Hack, E. Yazhenskikh, M. Mueller, Calphad, 56, 270-85(2017). _assessment that models this phase_ - [doi:10.2355/isijinternational.40.182](https://doi.org/10.2355/isijinternational.40.182) K. Oikawa, H. Mitsui, H. Ohtani, K. Ishida, ISIJ Int., 40, 182-90(2000). _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). https://doi.org/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). https://doi.org/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. ```bibtex @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} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).