Au–Pt–Sn system

74 accepted literature values from 1 paper(s) (experimental 56, model 13, unspecified 5); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	56
model	13
unspecified	5

Accepted values by property group
Property group	Values
invariant reaction	63
phase equilibrium	5
formation	3
heat capacity / entropy / enthalpy	3

Invariant reactions (literature)

Invariant reactions reported in the literature for the Au–Pt–Sn system (63)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1650.15	L/L + α	sample 11 (Au9.1Pt74Sn16.9): Au 0.091, Pt 0.74, Sn 0.169	experimental	[1] Grolier 2008	Table II, p. 3, row 35 report
1420.55	quasi-peritectic: L + α'' = α' + Pt3Sn	L: Au 0.7358, Pt 0.196, Sn 0.0683	model	[1] Grolier 2008	Table V, p. 12, row 1 report
1330.15	L/L + α	sample 1 (Au86.5Pt8.3Sn5.2): Au 0.865, Pt 0.083, Sn 0.052	experimental	[1] Grolier 2008	Table II, p. 3, row 1 report
1313.15	L/L + Pt3Sn	sample 2 (Au77Pt12.8Sn10.2): Au 0.77, Pt 0.128, Sn 0.102	experimental	[1] Grolier 2008	Table II, p. 3, row 4 report
1272.15	L + Pt3Sn/L + α + Pt3Sn	sample 2 (Au77Pt12.8Sn10.2): Au 0.77, Pt 0.128, Sn 0.102	experimental	[1] Grolier 2008	Table II, p. 3, row 5 report
1235.15	L + PtSn/L + PtSn + Pt3Sn		experimental	[1] Grolier 2008	Table II, p. 3, row 14 report
1235.15	L/L + PtSn	sample 5 (Au6.1Pt48.9Sn45): Au 0.061, Pt 0.489, Sn 0.45	experimental	[1] Grolier 2008	Table II, p. 3, row 13 report
1233.15	L + α/L + α + Pt3Sn	sample 1 (Au86.5Pt8.3Sn5.2): Au 0.865, Pt 0.083, Sn 0.052	experimental	[1] Grolier 2008	Table II, p. 3, row 2 report
1224.15	L/L + Pt3Sn	sample 3 (Au52.5Pt25.3Sn22.2): Au 0.525, Pt 0.253, Sn 0.222	experimental	[1] Grolier 2008	Table II, p. 3, row 7 report
1213.15	L/L + PtSn	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 29 report
1202.15	L/L + PtSn	sample 4 (Au36.3Pt33.6Sn30.1): Au 0.363, Pt 0.336, Sn 0.301	experimental	[1] Grolier 2008	Table II, p. 3, row 10 report
1195.15	L/L + PtSn	sample 9 (Au55.8Pt13Sn31.2): Au 0.558, Pt 0.13, Sn 0.312	experimental	[1] Grolier 2008	Table II, p. 3, row 25 report
1159.15	L + PtSn/L + PtSn + Pt3Sn	sample 4 (Au36.3Pt33.6Sn30.1): Au 0.363, Pt 0.336, Sn 0.301	experimental	[1] Grolier 2008	Table II, p. 3, row 11 report
1103.15	L/L + PtSn	sample 8 (Au60.7Pt6.6Sn32.7): Au 0.607, Pt 0.066, Sn 0.327	experimental	[1] Grolier 2008	Table II, p. 3, row 22 report
1097.15	L + Pt3Sn/L + Pt3Sn + PtSn	sample 3 (Au52.5Pt25.3Sn22.2): Au 0.525, Pt 0.253, Sn 0.222	experimental	[1] Grolier 2008	Table II, p. 3, row 8 report
1087.15	L/L + α	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 42 report
1087.15	L + Pt3Sn = α + PtSn	sample 2 (Au77Pt12.8Sn10.2): Au 0.77, Pt 0.128, Sn 0.102	experimental	[1] Grolier 2008	Table II, p. 3, row 6 report
1086.15	L + Pt3Sn = α + PtSn	sample 4 (Au36.3Pt33.6Sn30.1): Au 0.363, Pt 0.336, Sn 0.301	experimental	[1] Grolier 2008	Table II, p. 3, row 12 report
1085.15	quasi-peritectic: L + Pt3Sn = α' + PtSn		experimental	[1] Grolier 2008	Table V, p. 12, row 2 report
1085.15	L + Pt3Sn = α + PtSn	sample 5 (Au6.1Pt48.9Sn45): Au 0.061, Pt 0.489, Sn 0.45	experimental	[1] Grolier 2008	Table II, p. 3, row 15 report
1085.15	L + Pt3Sn = α + PtSn	sample 1 (Au86.5Pt8.3Sn5.2): Au 0.865, Pt 0.083, Sn 0.052	experimental	[1] Grolier 2008	Table II, p. 3, row 3 report
1085.15	L + Pt3Sn = α + PtSn	sample 3 (Au52.5Pt25.3Sn22.2): Au 0.525, Pt 0.253, Sn 0.222	experimental	[1] Grolier 2008	Table II, p. 3, row 9 report
1084.75	quasi-peritectic: L + Pt3Sn = α' + PtSn	L: Au 0.5902, Pt 0.2037, Sn 0.2061	model	[1] Grolier 2008	Table V, p. 12, row 3 report
1076.15	L/L + α	sample 12 (Au76.5Pt8.1Sn15.4): Au 0.765, Pt 0.081, Sn 0.154	experimental	[1] Grolier 2008	Table II, p. 3, row 37 report
1076.15	L + α/L + α + PtSn		experimental	[1] Grolier 2008	Table II, p. 3, row 38 report
1008.15	L + PtSn/PtSn + α	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 30 report
992.15	L/L + PtSn	sample 7 (Au63.4Pt3.0Sn33.6): Au 0.634, Sn 0.336	experimental	[1] Grolier 2008	Table II, p. 3, row 19 report
977.15	L + α/L + α + PtSn	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 43 report
881.75	quasi-peritectic: L + PtSn = Pt2Sn3 + δ	L: Au 0.4042, Pt 0.0382, Sn 0.5576	model	[1] Grolier 2008	Table V, p. 12, row 4 report
804.15	L + α = PtSn + β	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 31 report
804.15	L + α = PtSn + β	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 44 report
804.15	L + α = PtSn + β	sample 12 (Au76.5Pt8.1Sn15.4): Au 0.765, Pt 0.081, Sn 0.154	experimental	[1] Grolier 2008	Table II, p. 3, row 39 report
800.15	quasi-peritectic: L + α' = β + PtSn		experimental	[1] Grolier 2008	Table V, p. 12, row 5 report
799.05	quasi-peritectic: L + α' = β + PtSn	L: Au 0.7724, Pt 0.009, Sn 0.2186	model	[1] Grolier 2008	Table V, p. 12, row 6 report
792.15	L + β = PtSn + ζ	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 45 report
790.15	L + β = PtSn + ζ	sample 12 (Au76.5Pt8.1Sn15.4): Au 0.765, Pt 0.081, Sn 0.154	experimental	[1] Grolier 2008	Table II, p. 3, row 40 report
788.15	L + β = PtSn + ζ	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 32 report
787.95	quasi-peritectic: L + β = ζ + PtSn	L: Au 0.7696, Pt 0.008, Sn 0.2224	model	[1] Grolier 2008	Table V, p. 12, row 8 report
787.15	quasi-peritectic: L + β = ζ + PtSn		experimental	[1] Grolier 2008	Table V, p. 12, row 7 report
763.15	peritectic: L + Pt2Sn3 + δ = τ	L: Au 0.3686, Pt 0.0144, Sn 0.6171	model	[1] Grolier 2008	Table V, p. 12, row 10 report
763.15	peritectic: L + Pt2Sn3 + δ = τ		experimental	[1] Grolier 2008 cites Torgersen 2001 doi	Table V, p. 12, row 9 report
753.05	quasi-peritectic: L + Pt2Sn3 = τ + PtSn2	L: Au 0.3479, Pt 0.014, Sn 0.6382	model	[1] Grolier 2008	Table V, p. 12, row 11 report
712.15	L + PtSn/L + PtSn + ζ	sample 9 (Au55.8Pt13Sn31.2): Au 0.558, Pt 0.13, Sn 0.312	experimental	[1] Grolier 2008	Table II, p. 3, row 26 report
689.15	L + PtSn/L + PtSn + δ	sample 8 (Au60.7Pt6.6Sn32.7): Au 0.607, Pt 0.066, Sn 0.327	experimental	[1] Grolier 2008	Table II, p. 3, row 23 report
640.15	L + PtSn = ζ + δ	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 46 report
638.55	quasi-peritectic: L + PtSn = ζ + δ	L: Au 0.7186, Pt 0.0013, Sn 0.2801	model	[1] Grolier 2008	Table V, p. 12, row 13 report
638.15	L + PtSn = ζ + δ	sample 9 (Au55.8Pt13Sn31.2): Au 0.558, Pt 0.13, Sn 0.312	experimental	[1] Grolier 2008	Table II, p. 3, row 27 report
638.15	quasi-peritectic: L + PtSn = ζ + δ		experimental	[1] Grolier 2008	Table V, p. 12, row 12 report
637.15	L + PtSn = ζ + δ	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 33 report
617.65	quasi-peritectic: L + PtSn2 = τ + PtSn4	L: Au 0.2775, Pt 0.0025, Sn 0.7199	model	[1] Grolier 2008	Table V, p. 12, row 14 report
612.35	quasi-peritectic: L + τ = δ + PtSn4	L: Au 0.2789, Pt 0.0023, Sn 0.7189	model	[1] Grolier 2008	Table V, p. 12, row 15 report
596.15	L/L + δ	sample 6 (Au65.7Pt0.0Sn34.3): Au 0.657, Sn 0.343	experimental	[1] Grolier 2008	Table II, p. 3, row 16 report
575.65	quasi-peritectic: L + δ = ε + PtSn4	L: Au 0.2582, Pt 8.000e-4, Sn 0.741	model	[1] Grolier 2008	Table V, p. 12, row 16 report
553.15	eutectic: L = ζ + δ	sample 6 (Au65.7Pt0.0Sn34.3): Au 0.657, Sn 0.343	experimental	[1] Grolier 2008	Table II, p. 3, row 17 report
553.15	eutectic: L = ζ + δ*	sample 9 (Au55.8Pt13Sn31.2): Au 0.558, Pt 0.13, Sn 0.312	experimental	[1] Grolier 2008	Table II, p. 3, row 28 report
553.15	eutectic: L = ζ + δ*	sample 10 (Au50.3Pt20Sn29.7): Au 0.503, Pt 0.2, Sn 0.297	experimental	[1] Grolier 2008	Table II, p. 3, row 34 report
553.15	eutectic: L = ζ + δ*	sample 8 (Au60.7Pt6.6Sn32.7): Au 0.607, Pt 0.066, Sn 0.327	experimental	[1] Grolier 2008	Table II, p. 3, row 24 report
553.15	eutectic: L = ζ + δ*	sample 7 (Au63.4Pt3.0Sn33.6): Au 0.634, Sn 0.336	experimental	[1] Grolier 2008	Table II, p. 3, row 21 report
552.15	eutectic: L = ζ + δ*	sample 12 (Au76.5Pt8.1Sn15.4): Au 0.765, Pt 0.081, Sn 0.154	experimental	[1] Grolier 2008	Table II, p. 3, row 41 report
550.15	eutectic: L = ζ + δ*	sample 13 (Au71.5Pt7.8Sn20.7): Au 0.715, Pt 0.078, Sn 0.207	experimental	[1] Grolier 2008	Table II, p. 3, row 47 report
524.35	quasi-peritectic: L + ε = η + PtSn4	L: Au 0.1356, Pt 2.000e-4, Sn 0.8642	model	[1] Grolier 2008	Table V, p. 12, row 17 report
488.75	eutectic: L = PtSn4 + η + Sn	L: Au 0.0524, Pt 1.000e-4, Sn 0.9475	model	[1] Grolier 2008	Table V, p. 12, row 18 report
458.15	ζ + δ = ζ′	sample 6 (Au65.7Pt0.0Sn34.3): Au 0.657, Sn 0.343	experimental	[1] Grolier 2008	Table II, p. 3, row 18 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Au–Pt–Sn system (2)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
Au1.17Pt1.82Sn4		-40.11 kJ/mol-atom	298.15	experimental			[1] Grolier 2008 cites Torgersen 2000 doi	Table VI, p. 13, row 3 report
AuPt2Sn4		-44 kJ/mol-atom	298.15	unspecified			[1] Grolier 2008	Table VI, p. 13, row 4 report

Other properties

Phase equilibrium (5)

Phase equilibrium, Au–Pt–Sn system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition		ζ ζ: Pt 0.02	experimental	[1] Grolier 2008	Table III, p. 5, row 11 report
Phase composition	643.15	δ δ: Pt 0.25	experimental	[1] Grolier 2008	Table III, p. 5, row 3 report
Phase composition	673.15	Pt2Sn3 Pt2Sn3: Au 0.2	experimental	[1] Grolier 2008 cites Torgersen 2001 doi	Table III, p. 5, row 7 report
Phase composition	673.15	PtSn PtSn: Au 0.018	experimental	[1] Grolier 2008 cites Torgersen 2001 doi	Table III, p. 5, row 4 report
Phase composition	673.15	δ δ: Pt 0.242	experimental	[1] Grolier 2008 cites Torgersen 2001 doi	Table III, p. 5, row 2 report

Formation (1)

Formation, Au–Pt–Sn system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Entropy of formation printed: ΔS_formation	-5.71 J/mol-atom/K	298.15	AuPt2Sn4 alloy: Pt 0.285714, Sn 0.571429	unspecified	[1] Grolier 2008	Table VI, p. 13, row 5 report

Heat capacity / entropy / enthalpy (3)

Heat capacity / entropy / enthalpy, Au–Pt–Sn system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Entropy printed: ΔS_fusion	21.98 J · (mol-atom)^-1 · K^-1		AuPt2Sn4 alloy: Pt 0.285714, Sn 0.571429	unspecified	[1] Grolier 2008	Table VI, p. 13, row 9 report
Entropy printed: ΔS_fusion	21.98 J · (mol-atom)⁻¹ · K⁻¹		AuPt2Sn4 alloy: Pt 0.285714, Sn 0.571429	unspecified	[1] Grolier 2008	Table VI, p. 13, row 9 report
Entropy printed: S⁰_298	42.21 J/mol-atom/K	298.15	AuPt2Sn4 alloy: Pt 0.285714, Sn 0.571429	unspecified	[1] Grolier 2008	Table VI, p. 13, row 6 report

Sources

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

Vincent Grolier, Rainer Schmid-Fetzer, Experimental Study of Au-Pt-Sn Phase Equilibria and Thermodynamic Assessment of the Au-Pt and Au-Pt-Sn Systems, Journal of Elec Materi 37, 264-278 (2008). doi:10.1007/s11664-007-0352-9

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 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_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}
}