# Cr–Zn phases > Cr–Zn system: 6 phases (tier A 3, tier C 1, liquid 1, needs_review 1); 5 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-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/CR-ZN.md 6 phases (tier A 3, tier C 1, liquid 1, needs_review 1); 5 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-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/CR-ZN.json) · [Cr–Zn system page](https://data.orchid-project.org/systems/CR-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/CR-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Cr–Zn system (6) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-cr-zn-bcc-a2); _phase:cr-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2358.62 K, x(Zn) 0–0.02062 | 9 | 3 | | [CRZN13](#phase-cr-zn-crzn13); _phase:cr-zn:crzn13_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–761.42 K, x(Zn) 0.92857–0.92857 | 7 | 2 | | [CRZN17](#phase-cr-zn-crzn17); _phase:cr-zn:crzn17_ | Au2.5Cr7.5Zn90 · cF548 · F-43m (216) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–736.52 K, x(Zn) 0.94444–0.94444 | 16 | 3 | | [FCC_A1](#phase-cr-zn-fcc-a1); _phase:cr-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [HCP_A3](#phase-cr-zn-hcp-a3); _phase:cr-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–3998.93 K, x(Zn) 1–1 | 5 | 3 | | [LIQUID](#phase-cr-zn-liquid); _phase:cr-zn:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 691.46–4000 K, x(Zn) 0–1 | 22 | 3 | ## BCC_A2 (Cr–Zn) - Id: `phase:cr-zn: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): 300–2358.62 K, x(Zn) 0–0.02062 - Literature: 9 values (9 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:bcc-a2) Names (8): _corpus: _corpus:phase:cr-zn:bcc-a2 _paper: _paper:10.1007/s11669-003-0006-4:bcc_A2, paper:10.1016/j.jallcom.2010.02.087:(Cr), paper:10.1016/j.jallcom.2010.02.087:β-Cr, paper:sha256-85fd53a1a176b694:bcc-A2 _tdb: _tdb:CrZn-03Reu-LB.tdb:BCC_A2, tdb:CrZn-10Su.tdb:BCC_A2, tdb:CrZn-98Ans.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): BCC_A2, type code %B, sha256 `a1b249392f3b86f0…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : CR% ZN : VA : ! ~~~~ [CrZn-10Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-10Su.tdb): BCC_A2, type code %B, sha256 `132759fcba46e488…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : CR% ZN : VA : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): BCC_A2, type code %B, sha256 `1d3d06ce513339db…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : CR% ZN : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2010.02.087](https://doi.org/10.1016/j.jallcom.2010.02.087) Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/ijmr-1948-390202](https://doi.org/10.1515/ijmr-1948-390202) T. Heumann, Z. Metallkd 39 (1948) 45 (in German). _cited as the source of values for this phase_ ## CRZN13 (Cr–Zn) - Id: `phase:cr-zn:crzn13`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (literature_printed): (CrZn13) · m\*\* — printed with a label mapped to this phase - Candidate (sgte_mmc2): (CrZn13) — Hallstedt 2025 mmc2 row for CRZN13: CrZn13 - Stoichiometry: Cr 0.0714, Zn 0.9286 - Stability: stable in 2 of 2 calculated diagram(s): 300–761.42 K, x(Zn) 0.92857–0.92857 - Literature: 7 values (7 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:crzn13) Names (5): _corpus: _corpus:phase:cr-zn:crzn13 _paper: _paper:10.1007/s11669-003-0006-4:CrZn13, paper:sha256-85fd53a1a176b694:CrZn13 _tdb: _tdb:CrZn-03Reu-LB.tdb:CRZN13, tdb:CrZn-98Ans.tdb:CRZN13 ### TDB models of CRZN13 (2): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): CRZN13, type code %, sha256 `a1b249392f3b86f0…` ~~~~text 40: PHASE CRZN13 % 2 1 13 ! 41: CONST CRZN13 : CR : ZN : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): CRZN13, type code %, sha256 `1d3d06ce513339db…` ~~~~text 40: PHASE CRZN13 % 2 1 13 ! 41: CONST CRZN13 : CR : ZN : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase; reports values for this phase_ ## CRZN17 (Cr–Zn) - Id: `phase:cr-zn:crzn17`; status `assigned` - Structure: Au2.5Cr7.5Zn90 · cF548 · F-43m (216); type `st:au2-5cr7-5zn90-cf548`; 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 0.0556, Zn 0.9444 - Stability: stable in 3 of 3 calculated diagram(s): 300–736.52 K, x(Zn) 0.94444–0.94444 - Literature: 16 values (16 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:crzn17) Names (7): _corpus: _corpus:phase:cr-zn:crzn17 _paper: _paper:10.1007/s11669-003-0006-4:CrZn17, paper:10.1016/j.jallcom.2010.02.087:CrZn17, paper:sha256-85fd53a1a176b694:CrZn17 _tdb: _tdb:CrZn-03Reu-LB.tdb:CRZN17, tdb:CrZn-10Su.tdb:CRZN17, tdb:CrZn-98Ans.tdb:CRZN17 ### TDB models of CRZN17 (3): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): CRZN17, type code %, sha256 `a1b249392f3b86f0…` ~~~~text 45: PHASE CRZN17 % 2 1 17 ! 46: CONST CRZN17 : CR : ZN : ! ~~~~ [CrZn-10Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-10Su.tdb): CRZN17, type code %, sha256 `132759fcba46e488…` ~~~~text 42: PHASE CRZN17 % 2 1 17 ! 43: CONST CRZN17 : CR : ZN : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): CRZN17, type code %, sha256 `1d3d06ce513339db…` ~~~~text 45: PHASE CRZN17 % 2 1 17 ! 46: CONST CRZN17 : CR : ZN : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2010.02.087](https://doi.org/10.1016/j.jallcom.2010.02.087) Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/ijmr-1948-390202](https://doi.org/10.1515/ijmr-1948-390202) T. Heumann, Z. Metallkd 39 (1948) 45 (in German). _cited as the source of values for this phase_ ## FCC_A1 (Cr–Zn) - Id: `phase:cr-zn: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 3 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:fcc-a1) Names (4): _corpus: _corpus:phase:cr-zn:fcc-a1 _tdb: _tdb:CrZn-03Reu-LB.tdb:FCC_A1, tdb:CrZn-10Su.tdb:FCC_A1, tdb:CrZn-98Ans.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): FCC_A1, type code %A, sha256 `a1b249392f3b86f0…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : CR ZN : VA : ! ~~~~ [CrZn-10Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-10Su.tdb): FCC_A1, type code %A, sha256 `132759fcba46e488…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : CR ZN : VA : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): FCC_A1, type code %A, sha256 `1d3d06ce513339db…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : CR ZN : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.02.087](https://doi.org/10.1016/j.jallcom.2010.02.087) Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). _assessment that models this phase_ ## HCP_A3 (Cr–Zn) - Id: `phase:cr-zn: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: stable in 3 of 3 calculated diagram(s): 300–3998.93 K, x(Zn) 1–1 - Literature: 5 values (5 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:hcp-a3) Names (7): _corpus: _corpus:phase:cr-zn:hcp-a3 _paper: _paper:10.1007/s11669-003-0006-4:hcp_A3, paper:10.1016/j.jallcom.2010.02.087:(hcp(Zn)), paper:sha256-85fd53a1a176b694:hcp-Zn _tdb: _tdb:CrZn-03Reu-LB.tdb:HCP_A3, tdb:CrZn-10Su.tdb:HCP_A3, tdb:CrZn-98Ans.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): HCP_A3, type code %A, sha256 `a1b249392f3b86f0…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : CR ZN% : VA : ! ~~~~ [CrZn-10Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-10Su.tdb): HCP_A3, type code %A, sha256 `132759fcba46e488…` ~~~~text 37: PHASE HCP_A3 %A 2 1 0.5 ! 38: CONST HCP_A3 : CR ZN% : VA : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): HCP_A3, type code %A, sha256 `1d3d06ce513339db…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : CR ZN% : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2010.02.087](https://doi.org/10.1016/j.jallcom.2010.02.087) Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/ijmr-1948-390202](https://doi.org/10.1515/ijmr-1948-390202) T. Heumann, Z. Metallkd 39 (1948) 45 (in German). _cited as the source of values for this phase_ ## LIQUID (Cr–Zn) - Id: `phase:cr-zn:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 691.46–4000 K, x(Zn) 0–1 - Literature: 22 values (22 accepted) from 3 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cr-zn:liquid) Names (9): _corpus: _corpus:phase:cr-zn:liquid _paper: _paper:10.1007/s11669-003-0006-4:L, paper:10.1007/s11669-003-0006-4:liquid, paper:10.1016/j.jallcom.2010.02.087:L, paper:10.1016/j.jallcom.2010.02.087:Liquid, paper:sha256-85fd53a1a176b694:L _tdb: _tdb:CrZn-03Reu-LB.tdb:LIQUID, tdb:CrZn-10Su.tdb:LIQUID, tdb:CrZn-98Ans.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [CrZn-03Reu-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-03Reu-LB.tdb): LIQUID, type code %, sha256 `a1b249392f3b86f0…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : CR ZN : ! ~~~~ [CrZn-10Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-10Su.tdb): LIQUID, type code %, sha256 `132759fcba46e488…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : CR ZN : ! ~~~~ [CrZn-98Ans.tdb](https://orchid-project.org/data/databases/sgte-binary/CrZn-98Ans.tdb): LIQUID, type code %, sha256 `1d3d06ce513339db…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : CR ZN : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-003-0006-4](https://doi.org/10.1007/s11669-003-0006-4) Guy Reumont, Pierre Perrot, Thermodynamic assessment of the Zinc-Rich part of the Cr-Zn system, JPE 24, 50-54 (2003). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2010.02.087](https://doi.org/10.1016/j.jallcom.2010.02.087) Xuping Su, Ya Liu, Daniel Y.H. Liu, Jean-Claude Tedenac, Fucheng Yin, Jianhua Wang, Experimental investigation and thermodynamic assessment of the Zn–Cr system, Journal of Alloys and Compounds 496, 159-163 (2010). _assessment that models this phase; reports values for this phase_ - [doi:10.1515/ijmr-1948-390202](https://doi.org/10.1515/ijmr-1948-390202) T. Heumann, Z. Metallkd 39 (1948) 45 (in German). _cited as the source of values for 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).