Ag–Pb phases

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 · full JSON · Ag–Pb system page · Markdown · field reference

Phases of the Ag–Pb system (4)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
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	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	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	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

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: BCC_A2, type code %B, sha256 551dca3f5b93ef9a…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : AG PB : VA : !

AgPb-00Luk-SGSOL.tdb: BCC_A2, type code %B, sha256 866457c00fa8f649…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : AG PB : VA : !

AgPb-10Gie.tdb: BCC_A2, type code %B, sha256 b92d42c0b4253e28…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : AG PB : VA : !

AgPb-10Has.tdb: BCC_A2, type code %B, sha256 883ee79c97de9f3b…

29: PHASE BCC_A2 %B 2 1 3 !
30: CONST BCC_A2 : AG PB : VA : !

AgPb-86Hay.tdb: BCC_A2, type code %B, sha256 b1e63eaf751e1009…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : AG PB : VA : !

AgPb-94Lee.tdb: BCC_A2, type code %B, sha256 2f073721af8c64a8…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : AG PB : VA : !

AgPb-98Luk.tdb: BCC_A2, type code %B, sha256 fe1190083f812607…

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 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 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 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 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

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: FCC_A1, type code %A, sha256 551dca3f5b93ef9a…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : AG% PB% : VA : !

AgPb-00Luk-SGSOL.tdb: FCC_A1, type code %A, sha256 866457c00fa8f649…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : AG% PB% : VA : !

AgPb-10Gie.tdb: FCC_A1, type code %A, sha256 b92d42c0b4253e28…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : AG% PB% : VA : !

AgPb-10Has.tdb: FCC_A1, type code %A, sha256 883ee79c97de9f3b…

24: PHASE FCC_A1 %A 2 1 1 !
25: CONST FCC_A1 : AG% PB% : VA : !

AgPb-86Hay.tdb: FCC_A1, type code %A, sha256 b1e63eaf751e1009…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : AG% PB% : VA : !

AgPb-94Lee.tdb: FCC_A1, type code %A, sha256 2f073721af8c64a8…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : AG% PB% : VA : !

AgPb-98Luk.tdb: FCC_A1, type code %A, sha256 fe1190083f812607…

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 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 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 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 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

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: HCP_A3, type code %A, sha256 551dca3f5b93ef9a…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : AG PB : VA : !

AgPb-00Luk-SGSOL.tdb: HCP_A3, type code %A, sha256 866457c00fa8f649…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : AG PB : VA : !

AgPb-10Gie.tdb: HCP_A3, type code %A, sha256 b92d42c0b4253e28…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : AG PB : VA : !

AgPb-10Has.tdb: HCP_A3, type code %A, sha256 883ee79c97de9f3b…

34: PHASE HCP_A3 %A 2 1 0.5 !
35: CONST HCP_A3 : AG PB : VA : !

AgPb-86Hay.tdb: HCP_A3, type code %A, sha256 b1e63eaf751e1009…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : AG PB : VA : !

AgPb-94Lee.tdb: HCP_A3, type code %A, sha256 2f073721af8c64a8…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : AG PB : VA : !

AgPb-98Luk.tdb: HCP_A3, type code %A, sha256 fe1190083f812607…

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 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 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 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 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

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: LIQUID, type code %, sha256 551dca3f5b93ef9a…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : AG PB : !

AgPb-00Luk-SGSOL.tdb: LIQUID, type code %, sha256 866457c00fa8f649…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : AG PB : !

AgPb-10Gie.tdb: LIQUID, type code %, sha256 b92d42c0b4253e28…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : AG PB : !

AgPb-10Has.tdb: LIQUID, type code %, sha256 883ee79c97de9f3b…

19: PHASE LIQUID:L % 1 1 !
20: CONST LIQUID:L : AG PB : !

AgPb-86Hay.tdb: LIQUID, type code %, sha256 b1e63eaf751e1009…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : AG PB : !

AgPb-94Lee.tdb: LIQUID, type code %, sha256 2f073721af8c64a8…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : AG PB : !

AgPb-98Luk.tdb: LIQUID, type code %, sha256 fe1190083f812607…

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 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 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 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 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). 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}
}