Pb–Zn system

12 accepted literature values from 1 paper(s) (experimental 10, model 2); 4 calculated phase diagram(s). 2 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (4) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	10
model	2

Accepted values by property group
Property group	Values
invariant reaction	12

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
PbZn-03Dav.tdb	N. David, J. Hertz, J.-M. Fiorani, Z. Metallkd., 94, 8-11(2003). doi:10.3139/146.030008	`4d620daf5b35e9d92f85ddf9de085ac7b23d34d626dc354da46f99d92ec85cd0`	viewer · TDB · JSON
PbZn-03Kim.tdb	S.S. Kim, T.H. Sanders, Jr., Z. Metallkd., 94, 390-95(2003). doi:10.1515/ijmr-2003-0070	`dc3fde6733831cf63e270899a454e2dadc01687920aa9c6d72a29d2abb9b3dcf`	viewer · TDB · JSON
PbZn-93Sri-LB.tdb	M. Srivastava, R.C. Sharma, J. Phase Equilib., 14, 700-709(1993). doi:10.1007/BF02667882	`7baa1c24737eb72601e1ebfc98ce940f1f941a56d0e7e3a3b6c4a9450db36d79`	viewer · TDB · JSON
PbZn-98Jan.tdb	T. Jantzen, P.J. Spencer, Calphad, 22, 417-34(1998). doi:10.1016/S0364-5916(98)00040-6	`a00fd87820c8ecde199a7b3d02c568946e7398d5a42f4e58e931dde55b716ef8`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PbZn-03Dav.tdb	1059.22	LIQUID#3 (x(Zn) 0.57025) + LIQUID#2 (x(Zn) 0.65423) + LIQUID (x(Zn) 0.83669)
PbZn-03Dav.tdb	691.31	LIQUID (x(Zn) 0.05027) + LIQUID#2 (x(Zn) 0.99651) + HCP_A3 (x(Zn) 0.99924)
PbZn-03Dav.tdb	592.2	FCC_A1 (x(Zn) 8.400e-4) + LIQUID (x(Zn) 0.01621) + HCP_A3 (x(Zn) 0.99972)
PbZn-03Kim.tdb	693.48	LIQUID (x(Zn) 0.04732) + HCP_A3 (x(Zn) 0.99595) + LIQUID#2 (x(Zn) 0.99745)
PbZn-03Kim.tdb	594.26	FCC_A1 (x(Zn) 0.00265) + LIQUID (x(Zn) 0.01286) + HCP_A3 (x(Zn) 0.99803)
PbZn-93Sri-LB.tdb	693.31	LIQUID (x(Zn) 0.05047) + HCP_A3 (x(Zn) 0.99595) + LIQUID#2 (x(Zn) 0.99711)
PbZn-93Sri-LB.tdb	591.53	FCC_A1 (x(Zn) 0.00256) + LIQUID (x(Zn) 0.01778) + HCP_A3 (x(Zn) 0.99809)
PbZn-98Jan.tdb	693.19	LIQUID (x(Zn) 0.05015) + HCP_A3 (x(Zn) 0.99595) + LIQUID#2 (x(Zn) 0.99687)
PbZn-98Jan.tdb	590.91	FCC_A1 (x(Zn) 0.00254) + LIQUID (x(Zn) 0.01897) + HCP_A3 (x(Zn) 0.9981)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull PbZn-03Kim · CALPHAD hull PbZn-93Sri-LB · CALPHAD hull PbZn-98Jan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pb–Zn system (12)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
691.1	monotectic: L2 -> (Zn) + L1	L2: Zn 0.997; L1: Zn 0.049	model	[1] Srivastava 1993	Table 3, p. 7, row 13 report
691	monotectic: L2 -> (Zn) + L1	L2: Zn 0.998; L1: Zn 0.1004	experimental	[1] Srivastava 1993 cites ref. 14	Table 3, p. 7, row 10 report
691	monotectic: L2 -> (Zn) + L1	L2: Zn 0.9973; L1: Zn 0.052	experimental	[1] Srivastava 1993 cites ref. 54	Table 3, p. 7, row 12 report
690.8	monotectic: L2 -> (Zn) + L1	L2: Zn 0.997; L1: Zn 0.06	experimental	[1] Srivastava 1993 cites ref. 49	Table 3, p. 7, row 11 report
591.35	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.018	experimental	[1] Srivastava 1993 cites ref. 54	Table 3, p. 7, row 7 report
591.2	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.016	experimental	[1] Srivastava 1993 cites ref. 53	Table 3, p. 7, row 4 report
591.2	eutectic: L1 -> (Zn) + (Pb)		experimental	[1] Srivastava 1993 cites ref. 49	Table 3, p. 7, row 5 report
591	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.016	experimental	[1] Srivastava 1993 cites ref. 15	Table 3, p. 7, row 6 report
591	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.022	experimental	[1] Srivastava 1993 cites ref. 3	Table 3, p. 7, row 1 report
590.22	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.0175	model	[1] Srivastava 1993	Table 3, p. 7, row 8 report
590	eutectic: L1 -> (Zn) + (Pb)	L1: Zn 0.037	experimental	[1] Srivastava 1993 cites ref. 14	Table 3, p. 7, row 2 report
589	eutectic: L1 -> (Zn) + (Pb)		experimental	[1] Srivastava 1993 cites ref. 52	Table 3, p. 7, row 3 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

M. Srivastava, R. C. Sharma, Thermodynamic analysis and phase equilibria calculations of pb-zn, sn-zn, and pb-sn-zn systems, JPE 14, 700-709 (1993). doi:10.1007/bf02667882

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}