Hg–Pb system

24 accepted literature values from 1 paper(s) (experimental 20, model 4); 1 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 (6) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	20
model	4

Accepted values by property group
Property group	Values
phase transition	11
phase equilibrium	13

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
HgPb-02Mai-LB.tdb	A. Maitre, J.M. Fiorani, M. Vilasi, J. Phase Equilib., 23, 329-38(2002). doi:10.1361/105497102770331578	`7e9650b9546b0f1f27d1694d8941a33904617de48101e6aada19029edc26b6f6`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HgPb-02Mai-LB.tdb	429.07	LIQUID (x(Pb) 0.48553) + HGPB2_L10 (x(Pb) 0.66667) + FCC_A1 (x(Pb) 0.69489)
HgPb-02Mai-LB.tdb	429.07	LIQUID (x(Pb) 0.48601) + HGPB2_L10 (x(Pb) 0.66667) + FCC_A1 (x(Pb) 0.69512)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Other properties

Phase transition (11)

Phase transition, Hg–Pb system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	235.6 K	235.6	peritectic: Liq + Pb2Hg ↔ rhombo_A10(Hg) alloy: Pb 0.666667	model	[1] Maitre 2002	Table 2, p. 4, row 21 report
Phase transition	427.3 K	427.3	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Hg 0.32, Pb 0.68	experimental	[1] Maitre 2002	Table 2, p. 4, row 14 report
Phase transition	428.6 K	428.6	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Hg 0.31, Pb 0.69	experimental	[1] Maitre 2002	Table 2, p. 4, row 12 report
Phase transition	428.7 K	428.7	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Hg 0.28, Pb 0.72	experimental	[1] Maitre 2002	Table 2, p. 4, row 10 report
Phase transition	429 K	429	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Pb 1	model	[1] Maitre 2002	Table 2, p. 4, row 22 report
Phase transition	429.3 K	429.3	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Hg 0.4, Pb 0.6	experimental	[1] Maitre 2002	Table 2, p. 4, row 18 report
Phase transition	429.4 K	429.4	peritectic: liq + fcc(Pb) ↔ Pb2Hg alloy: Hg 0.35, Pb 0.65	experimental	[1] Maitre 2002	Table 2, p. 4, row 16 report
Phase transition	453.2 K	453.2	other: 25 at.% Hg alloy: Hg 0.25, Pb 0.75	experimental	[1] Maitre 2002	Table 2, p. 4, row 8 report
Phase transition	490 K	490	other: 21 at.% Hg alloy: Hg 0.21, Pb 0.79	experimental	[1] Maitre 2002	Table 2, p. 4, row 6 report
Phase transition	513 K	513	other: 15 at.% Hg alloy: Hg 0.15, Pb 0.85	experimental	[1] Maitre 2002	Table 2, p. 4, row 4 report
Phase transition	536 K	536	other: 10 at.% Hg alloy: Hg 0.1, Pb 0.9	experimental	[1] Maitre 2002	Table 2, p. 4, row 2 report

Phase equilibrium (13)

Phase equilibrium, Hg–Pb system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	235.6	Liquid + Rhombo_A10(Hg) + Pb2Hg Liquid: Hg 0.996, Pb 0.004; Rhombo_A10(Hg): Hg 0.994, Pb 0.006; Pb2Hg: Hg 0.326, Pb 0.674	model	[1] Maitre 2002	Table 3, p. 4, row 1 report
Phase composition	378.7	other: 80 at.% Hg liquid: Hg 0.8, Pb 0.2	experimental	[1] Maitre 2002	Table 2, p. 4, row 20 report
Phase composition	410.7	other: 60 at.% Hg liquid: Hg 0.6, Pb 0.4	experimental	[1] Maitre 2002	Table 2, p. 4, row 19 report
Phase composition	429	Liquid + Fcc(Pb) + Pb2Hg Liquid: Hg 0.506, Pb 0.494; Fcc(Pb): Hg 0.298, Pb 0.702; Pb2Hg: Hg 0.326, Pb 0.674	model	[1] Maitre 2002	Table 3, p. 4, row 2 report
Phase composition	457.7	other: 40 at.% Hg liquid: Hg 0.4, Pb 0.6	experimental	[1] Maitre 2002	Table 2, p. 4, row 17 report
Phase composition	478.7	other: 35 at.% Hg liquid: Hg 0.35, Pb 0.65	experimental	[1] Maitre 2002	Table 2, p. 4, row 15 report
Phase composition	489.7	other: 32 at.% Hg liquid: Hg 0.32, Pb 0.68	experimental	[1] Maitre 2002	Table 2, p. 4, row 13 report
Phase composition	491.8	other: 31 at.% Hg liquid: Hg 0.31, Pb 0.69	experimental	[1] Maitre 2002	Table 2, p. 4, row 11 report
Phase composition	491.9	other: 28 at.% Hg liquid: Hg 0.28, Pb 0.72	experimental	[1] Maitre 2002	Table 2, p. 4, row 9 report
Phase composition	508.4	other: 25 at.% Hg liquid: Hg 0.25, Pb 0.75	experimental	[1] Maitre 2002	Table 2, p. 4, row 7 report
Phase composition	527.9	other: 21 at.% Hg liquid: Hg 0.21, Pb 0.79	experimental	[1] Maitre 2002	Table 2, p. 4, row 5 report
Phase composition	543.7	other: 15 at.% Hg liquid: Hg 0.15, Pb 0.85	experimental	[1] Maitre 2002	Table 2, p. 4, row 3 report
Phase composition	566.9	other: 10 at.% Hg liquid: Hg 0.1, Pb 0.9	experimental	[1] Maitre 2002	Table 2, p. 4, row 1 report

Sources

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

A. Maitre, J. M. Fiorani, M. Vilasi, Thermodynamic study of phase equilibria in the Pb-Bi-Hg system, JPE 23, 329-338 (2002). doi:10.1361/105497102770331578

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}
}