# Ag–Pb phases > Ag–Pb system: 4 phases (tier A 3, liquid 1); 2 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/AG-PB.html · Markdown: https://data.orchid-project.org/phases/pages/AG-PB.md 4 phases (tier A 3, liquid 1); 2 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=AG-PB) · [full JSON](https://data.orchid-project.org/phases/systems/AG-PB.json) · [Ag–Pb system page](https://data.orchid-project.org/systems/AG-PB.html) · [Markdown](https://data.orchid-project.org/phases/pages/AG-PB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Ag–Pb system (4) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-ag-pb-bcc-a2); _phase:ag-pb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 7 calculated diagram(s) | 0 | 7 | | [FCC_A1](#phase-ag-pb-fcc-a1); _phase:ag-pb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 7 of 7 calculated diagram(s): 300–2499.36 K, x(Pb) 0–1 | 0 | 7 | | [HCP_A3](#phase-ag-pb-hcp-a3); _phase:ag-pb:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 7 calculated diagram(s) | 0 | 7 | | [LIQUID](#phase-ag-pb-liquid); _phase:ag-pb:liquid_ | liquid | liquid | stable in 7 of 7 calculated diagram(s): 575.17–2500 K, x(Pb) 0–1 | 43 | 7 | ## BCC_A2 (Ag–Pb) - Id: `phase:ag-pb:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high - Stability: not stable in 7 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ag-pb:bcc-a2) Names (8): _corpus: _corpus:phase:ag-pb:bcc-a2 _tdb: _tdb:AgPb-00Luk-LB.tdb:BCC_A2, tdb:AgPb-00Luk-SGSOL.tdb:BCC_A2, tdb:AgPb-10Gie.tdb:BCC_A2, tdb:AgPb-10Has.tdb:BCC_A2, tdb:AgPb-86Hay.tdb:BCC_A2, tdb:AgPb-94Lee.tdb:BCC_A2, tdb:AgPb-98Luk.tdb:BCC_A2 ### TDB models of BCC_A2 (7): PHASE and CONSTITUENT statements as written [AgPb-00Luk-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-LB.tdb): BCC_A2, type code %B, sha256 `551dca3f5b93ef9a…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-00Luk-SGSOL.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-SGSOL.tdb): BCC_A2, type code %B, sha256 `866457c00fa8f649…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-10Gie.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Gie.tdb): BCC_A2, type code %B, sha256 `b92d42c0b4253e28…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-10Has.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Has.tdb): BCC_A2, type code %B, sha256 `883ee79c97de9f3b…` ~~~~text 29: PHASE BCC_A2 %B 2 1 3 ! 30: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-86Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-86Hay.tdb): BCC_A2, type code %B, sha256 `b1e63eaf751e1009…` ~~~~text 38: PHASE BCC_A2 %B 2 1 3 ! 39: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-94Lee.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-94Lee.tdb): BCC_A2, type code %B, sha256 `2f073721af8c64a8…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : AG PB : VA : ! ~~~~ [AgPb-98Luk.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-98Luk.tdb): BCC_A2, type code %B, sha256 `fe1190083f812607…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : AG PB : VA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-010-9791-8](https://doi.org/10.1007/s11669-010-9791-8) W. Gierlotka, J. Lapsa, K. Fitzner, J. Phase Equilib. Diffus., 31, 509-17(2010). _assessment that models this phase_ - [doi:10.1016/0925-8388(94)90857-5](https://doi.org/10.1016/0925-8388%2894%2990857-5) Byung-Zu Lee, Chang-Seok Oh, Dong Nyung Lee, A thermodynamic evaluation of the AgPbSb system, Journal of Alloys and Compounds 215, 293-301 (1994). _assessment that models this phase_ - [doi:10.1016/j.tca.2010.06.020](https://doi.org/10.1016/j.tca.2010.06.020) S. Hassam, D. Boa, P. Benigni, J. Rogez, Critical assessment and optimization of the Ag–Au–Pb system, Thermochimica Acta 510, 37-45 (2010). _assessment that models this phase_ - [doi:10.1515/ijmr-1986-771108](https://doi.org/10.1515/ijmr-1986-771108) F.H. Hayes, H.L. Lukas, G. Effenberg, G. Petzow, Z. Metallkd., 77, 749-54(1986). _assessment that models this phase_ ## FCC_A1 (Ag–Pb) - Id: `phase:ag-pb: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 7 of 7 calculated diagram(s): 300–2499.36 K, x(Pb) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ag-pb:fcc-a1) Names (8): _corpus: _corpus:phase:ag-pb:fcc-a1 _tdb: _tdb:AgPb-00Luk-LB.tdb:FCC_A1, tdb:AgPb-00Luk-SGSOL.tdb:FCC_A1, tdb:AgPb-10Gie.tdb:FCC_A1, tdb:AgPb-10Has.tdb:FCC_A1, tdb:AgPb-86Hay.tdb:FCC_A1, tdb:AgPb-94Lee.tdb:FCC_A1, tdb:AgPb-98Luk.tdb:FCC_A1 ### TDB models of FCC_A1 (7): PHASE and CONSTITUENT statements as written [AgPb-00Luk-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-LB.tdb): FCC_A1, type code %A, sha256 `551dca3f5b93ef9a…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-00Luk-SGSOL.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-SGSOL.tdb): FCC_A1, type code %A, sha256 `866457c00fa8f649…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-10Gie.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Gie.tdb): FCC_A1, type code %A, sha256 `b92d42c0b4253e28…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-10Has.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Has.tdb): FCC_A1, type code %A, sha256 `883ee79c97de9f3b…` ~~~~text 24: PHASE FCC_A1 %A 2 1 1 ! 25: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-86Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-86Hay.tdb): FCC_A1, type code %A, sha256 `b1e63eaf751e1009…` ~~~~text 33: PHASE FCC_A1 %A 2 1 1 ! 34: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-94Lee.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-94Lee.tdb): FCC_A1, type code %A, sha256 `2f073721af8c64a8…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ [AgPb-98Luk.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-98Luk.tdb): FCC_A1, type code %A, sha256 `fe1190083f812607…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : AG% PB% : VA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-010-9791-8](https://doi.org/10.1007/s11669-010-9791-8) W. Gierlotka, J. Lapsa, K. Fitzner, J. Phase Equilib. Diffus., 31, 509-17(2010). _assessment that models this phase_ - [doi:10.1016/0925-8388(94)90857-5](https://doi.org/10.1016/0925-8388%2894%2990857-5) Byung-Zu Lee, Chang-Seok Oh, Dong Nyung Lee, A thermodynamic evaluation of the AgPbSb system, Journal of Alloys and Compounds 215, 293-301 (1994). _assessment that models this phase_ - [doi:10.1016/j.tca.2010.06.020](https://doi.org/10.1016/j.tca.2010.06.020) S. Hassam, D. Boa, P. Benigni, J. Rogez, Critical assessment and optimization of the Ag–Au–Pb system, Thermochimica Acta 510, 37-45 (2010). _assessment that models this phase_ - [doi:10.1515/ijmr-1986-771108](https://doi.org/10.1515/ijmr-1986-771108) F.H. Hayes, H.L. Lukas, G. Effenberg, G. Petzow, Z. Metallkd., 77, 749-54(1986). _assessment that models this phase_ ## HCP_A3 (Ag–Pb) - Id: `phase:ag-pb: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 7 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ag-pb:hcp-a3) Names (8): _corpus: _corpus:phase:ag-pb:hcp-a3 _tdb: _tdb:AgPb-00Luk-LB.tdb:HCP_A3, tdb:AgPb-00Luk-SGSOL.tdb:HCP_A3, tdb:AgPb-10Gie.tdb:HCP_A3, tdb:AgPb-10Has.tdb:HCP_A3, tdb:AgPb-86Hay.tdb:HCP_A3, tdb:AgPb-94Lee.tdb:HCP_A3, tdb:AgPb-98Luk.tdb:HCP_A3 ### TDB models of HCP_A3 (7): PHASE and CONSTITUENT statements as written [AgPb-00Luk-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-LB.tdb): HCP_A3, type code %A, sha256 `551dca3f5b93ef9a…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-00Luk-SGSOL.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-SGSOL.tdb): HCP_A3, type code %A, sha256 `866457c00fa8f649…` ~~~~text 37: PHASE HCP_A3 %A 2 1 0.5 ! 38: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-10Gie.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Gie.tdb): HCP_A3, type code %A, sha256 `b92d42c0b4253e28…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-10Has.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Has.tdb): HCP_A3, type code %A, sha256 `883ee79c97de9f3b…` ~~~~text 34: PHASE HCP_A3 %A 2 1 0.5 ! 35: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-86Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-86Hay.tdb): HCP_A3, type code %A, sha256 `b1e63eaf751e1009…` ~~~~text 43: PHASE HCP_A3 %A 2 1 0.5 ! 44: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-94Lee.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-94Lee.tdb): HCP_A3, type code %A, sha256 `2f073721af8c64a8…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : AG PB : VA : ! ~~~~ [AgPb-98Luk.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-98Luk.tdb): HCP_A3, type code %A, sha256 `fe1190083f812607…` ~~~~text 37: PHASE HCP_A3 %A 2 1 0.5 ! 38: CONST HCP_A3 : AG PB : VA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-010-9791-8](https://doi.org/10.1007/s11669-010-9791-8) W. Gierlotka, J. Lapsa, K. Fitzner, J. Phase Equilib. Diffus., 31, 509-17(2010). _assessment that models this phase_ - [doi:10.1016/0925-8388(94)90857-5](https://doi.org/10.1016/0925-8388%2894%2990857-5) Byung-Zu Lee, Chang-Seok Oh, Dong Nyung Lee, A thermodynamic evaluation of the AgPbSb system, Journal of Alloys and Compounds 215, 293-301 (1994). _assessment that models this phase_ - [doi:10.1016/j.tca.2010.06.020](https://doi.org/10.1016/j.tca.2010.06.020) S. Hassam, D. Boa, P. Benigni, J. Rogez, Critical assessment and optimization of the Ag–Au–Pb system, Thermochimica Acta 510, 37-45 (2010). _assessment that models this phase_ - [doi:10.1515/ijmr-1986-771108](https://doi.org/10.1515/ijmr-1986-771108) F.H. Hayes, H.L. Lukas, G. Effenberg, G. Petzow, Z. Metallkd., 77, 749-54(1986). _assessment that models this phase_ ## LIQUID (Ag–Pb) - Id: `phase:ag-pb:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 7 of 7 calculated diagram(s): 575.17–2500 K, x(Pb) 0–1 - Literature: 43 values (43 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ag-pb:liquid) Names (9): _corpus: _corpus:phase:ag-pb:liquid _paper: _paper:10.1016/j.tca.2010.06.020:liquid _tdb: _tdb:AgPb-00Luk-LB.tdb:LIQUID, tdb:AgPb-00Luk-SGSOL.tdb:LIQUID, tdb:AgPb-10Gie.tdb:LIQUID, tdb:AgPb-10Has.tdb:LIQUID, tdb:AgPb-86Hay.tdb:LIQUID, tdb:AgPb-94Lee.tdb:LIQUID, tdb:AgPb-98Luk.tdb:LIQUID ### TDB models of LIQUID (7): PHASE and CONSTITUENT statements as written [AgPb-00Luk-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-LB.tdb): LIQUID, type code %, sha256 `551dca3f5b93ef9a…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-00Luk-SGSOL.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-00Luk-SGSOL.tdb): LIQUID, type code %, sha256 `866457c00fa8f649…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-10Gie.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Gie.tdb): LIQUID, type code %, sha256 `b92d42c0b4253e28…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-10Has.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-10Has.tdb): LIQUID, type code %, sha256 `883ee79c97de9f3b…` ~~~~text 19: PHASE LIQUID:L % 1 1 ! 20: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-86Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-86Hay.tdb): LIQUID, type code %, sha256 `b1e63eaf751e1009…` ~~~~text 28: PHASE LIQUID:L % 1 1 ! 29: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-94Lee.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-94Lee.tdb): LIQUID, type code %, sha256 `2f073721af8c64a8…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : AG PB : ! ~~~~ [AgPb-98Luk.tdb](https://orchid-project.org/data/databases/sgte-binary/AgPb-98Luk.tdb): LIQUID, type code %, sha256 `fe1190083f812607…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : AG PB : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/j.tca.2010.06.020](https://doi.org/10.1016/j.tca.2010.06.020) S. Hassam, D. Boa, P. Benigni, J. Rogez, Critical assessment and optimization of the Ag–Au–Pb system, Thermochimica Acta 510, 37-45 (2010). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-010-9791-8](https://doi.org/10.1007/s11669-010-9791-8) W. Gierlotka, J. Lapsa, K. Fitzner, J. Phase Equilib. Diffus., 31, 509-17(2010). _assessment that models this phase_ - [doi:10.1016/0925-8388(94)90857-5](https://doi.org/10.1016/0925-8388%2894%2990857-5) Byung-Zu Lee, Chang-Seok Oh, Dong Nyung Lee, A thermodynamic evaluation of the AgPbSb system, Journal of Alloys and Compounds 215, 293-301 (1994). _assessment that models this phase_ - [doi:10.1515/ijmr-1986-771108](https://doi.org/10.1515/ijmr-1986-771108) F.H. Hayes, H.L. Lukas, G. Effenberg, G. Petzow, Z. Metallkd., 77, 749-54(1986). _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).