# Pb system > Pb system: 16 accepted literature values (crystal structure 14, phase transition 2) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/PB.html · Markdown: https://data.orchid-project.org/systems/PB.md 16 accepted literature values from 7 paper(s) (experimental 2, model 6, DFT 7, unspecified 1); 0 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV. Data: [JSON](https://data.orchid-project.org/literature/systems/PB.json) · [CSV](https://data.orchid-project.org/systems/PB.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#PB) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/PB.html) · [Markdown](https://data.orchid-project.org/systems/PB.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 2 | | model | 6 | | DFT | 7 | | unspecified | 1 | Table: Accepted values by property group | Property group | Values | |---|---:| | phase transition | 2 | | crystal structure | 14 | ## Other properties ### Phase transition (2) Table: Phase transition, Pb system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase transition | 562.95 K | 562.95 | (Pb); _(Pb): Pb 0.9578_ | model | [1] Idbenali 2007 | Table 4, p. 8, row 2; `ORC-TAV6RKYQJ7` | | | Phase transition | 563.25 K | 563.25 | (Pb); _(Pb): Pb 0.958_ | model | [1] Idbenali 2007 | Table 4, p. 8, row 3; `ORC-RANJYWDVN3` | | ### Crystal structure (14) Table: Crystal structure, Pb system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Lattice a; _printed: Lattice constant a_ | 3.547 unknown | 0 | FCC_A1(Pb); _alloy: Pb 1_ | DFT | [2] Dębski 2021 | Table 3, p. 4, row 18; `ORC-4S626ARL34` | | | Lattice a; _printed: Lattice constant a_ | 3.467 unknown | 0 | FCC_A1(Pb); _alloy: Pb 1_ | DFT | [2] Dębski 2021; _cites Wyckoff 1963_ | Table 3, p. 4, row 22; `ORC-E5PUIPB6ZV` | | | Lattice a; _printed: Lattice constant a_ | 3.499 unknown | 0 | FCC_A1(Pb); _alloy: Pb 1_ | DFT | [2] Dębski 2021; _cites Bouad 2003_ [doi](https://doi.org/10.1016/s0022-4596%2803%2900017-3) | Table 3, p. 4, row 21; `ORC-UBLX53BLKE` | | | Lattice a; _printed: Lattice constant a_ | 3.571 unknown | 0 | FCC_A1(Pb); _alloy: Pb 1_ | DFT | [2] Dębski 2021; _cites Materials_ | Table 3, p. 4, row 19; `ORC-W5ZC5P6LQL` | | | Lattice a; _printed: Lattice constant a_ | 3.485 unknown | 0 | FCC_A1(Pb); _alloy: Pb 1_ | DFT | [2] Dębski 2021; _cites Davey 1925_ [doi](https://doi.org/10.1103/physrev.25.753) | Table 3, p. 4, row 20; `ORC-Z6JJSDME7S` | | | Lattice a | 5.049 Å | | Pb | model | [3] Long 2009; _cites Wang 2004_ [doi](https://doi.org/10.1016/j.calphad.2004.05.002) | Table 1, p. 2, row 9; `ORC-KXGE23RKKC` | | | Lattice a | 5.0248 Å | 0 | Pb | DFT | [3] Long 2009 | Table 1, p. 2, row 8; `ORC-NEUSKWMTYZ` | | | Lattice a | 4.9506 Å | | Pb | model | [3] Long 2009; _cites Mao 1990_ [doi](https://doi.org/10.1016/0038-1098%2890%2990479-u) | Table 1, p. 2, row 10; `ORC-Z7WQYAJA34` | | | Lattice a | 4.9502 Å | 298.15 | (Pb); _(Pb): Pb 1_ | model | [4] Olesinski 1984; _cites King 1982_ | Table 3, p. 3, row 2; `ORC-S24EBKIL3J` | | | Lattice a | 4.9502 Å | 298.15 | Pb; _alloy: Pb 1_ | unspecified | [5] Ansara 1991; _cites ref. 1_ | Table 3, p. 3, row 2; `ORC-OW3RXZFIAL` | | | Lattice a | 4.95 Å | 298.15 | Pb; _alloy: Pb 1_ | experimental | [6] Zhou 2016; _cites Klug 1946_ [doi](https://doi.org/10.1021/ja01212a032) | Table 1, p. 2, row 10; `ORC-QEI7N4SAKZ` | | | Lattice a | 4.9502 Å | 600.65 (\<) | Pb | model | [7] Vasslliev 1993; _cites Massalski 1990_ | Table 1, p. 1, row 8; `ORC-THFBCZ4KPM` | | | Molar volume; _printed: V0_ | 30.32 Å3/atom | | Pb; _alloy: Pb 1_ | experimental | [6] Zhou 2016; _cites Klug 1946_ [doi](https://doi.org/10.1021/ja01212a032) | Table 4, p. 4, row 19; `ORC-NIJISJQNZ3` | | | Molar volume; _printed: V0_ | 31.98 Å3/atom | 0 | Pb; _alloy: Pb 1_ | DFT | [6] Zhou 2016 | Table 4, p. 4, row 18; `ORC-YITAM4LOL5` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, A thermodynamic modelling of the Ba–Pb system, Calphad 31, 479-489 (2007). [doi:10.1016/j.calphad.2007.04.003](https://doi.org/10.1016/j.calphad.2007.04.003) 2. A. Dębski, W. Gierlotka, S. Terlicka, W. Gąsior, On the Mg-Pb system. Calorimetric studies and thermodynamic calculations, Journal of Alloys and Compounds 861, 158396 (2021). [doi:10.1016/j.jallcom.2020.158396](https://doi.org/10.1016/j.jallcom.2020.158396) 3. Z. H. Long, X. M. Tao, H. S. Liu, Z. P. Jin, First-Principle Calculation Assisted Thermodynamic Assessment of the Pt-Pb System, J. Phase Equilib. Diffus. 30, 318-322 (2009). [doi:10.1007/s11669-009-9530-1](https://doi.org/10.1007/s11669-009-9530-1) 4. R. W. Olesinski, G. J. Abbaschian, The Pb−Si (Lead−Silicon) system, Bulletin of Alloy Phase Diagrams 5, 271-273 (1984). [doi:10.1007/bf02868551](https://doi.org/10.1007/bf02868551) 5. I Ansara, F Ajersch, The Ga-Pb (Gallium-Lead) System, JPE 12, 73-77 (1991). [doi:10.1007/bf02663678](https://doi.org/10.1007/bf02663678) 6. Chenyang Zhou, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Li–Pb system aided by first-principles calculations, Journal of Nuclear Materials 477, 95-101 (2016). [doi:10.1016/j.jnucmat.2016.04.061](https://doi.org/10.1016/j.jnucmat.2016.04.061) 7. V. Vasslliev, M. Gambino, J. P. Bros, G. Borzone, G. Cacciamani, R. Ferro, Thermodynamic investigation and optimization of the Y-Pb alloy system, JPE 14, 142-149 (1993). [doi:10.1007/bf02667801](https://doi.org/10.1007/bf02667801) ## 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). https://doi.org/10.5281/zenodo.23735569 - 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 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. ```bibtex @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_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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).