C system

26 accepted literature values from 3 paper(s) (experimental 8, model 10, unspecified 8); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	8
model	10
unspecified	8

Accepted values by property group
Property group	Values
mixing / partial	2
heat capacity / entropy / enthalpy	15
crystal structure	6
other property	3

Other properties

Mixing / partial (2)

Mixing / partial, C system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Partial enthalpy printed: H_C^liq(T_m) - H_C^gra(T_m)	125.52 kJ/mol (basis unstated)		liquid C	experimental	[1] He 2021 cites Leider 1973 doi	Table 2, p. 3, row 3 report
Partial enthalpy printed: H_C^liq(T_m) - H_C^gra(T_m)	117.318 kJ/mol (basis unstated)		liquid C	unspecified	[1] He 2021	Table 2, p. 3, row 4 report

Heat capacity / entropy / enthalpy (15)

Heat capacity / entropy / enthalpy, C system
Property	Value	Phases / composition	Class	Source	Location
Entropy printed: S_C^liq(Tm) − S_C^gra(Tm)	24.6 J/mol (basis unstated)/K	liquid	experimental	[2] He 2022 cites Gokcen 1976	Table 1, p. 2, row 7 report
Entropy printed: S_C^liq(Tm) − S_C^gra(Tm)	24.6 J/mol (basis unstated)/K	liquid	model	[2] He 2022 cites He 2021 doi	Table 1, p. 2, row 8 report
Entropy printed: S_C^liq(Tm) − S_C^dia(Tm)	30.5 J/mol (basis unstated)/K	liquid	model	[2] He 2022 cites He 2021 doi	Table 1, p. 2, row 16 report
Entropy printed: S_C^liq(Tm) − S_C^gra(Tm)	24.85 J/mol (basis unstated)/K	liquid	model	[2] He 2022	Table 1, p. 2, row 9 report
Entropy printed: S_C^liq(Tm) − S_C^dia(Tm)	30.73 J/mol (basis unstated)/K	liquid	model	[2] He 2022	Table 1, p. 2, row 17 report
Entropy printed: S_C^liq(Tm) − S_C^dia(Tm)	29.3 J/mol (basis unstated)/K	liquid	experimental	[2] He 2022 cites Gokcen 1976	Table 1, p. 2, row 15 report
Entropy printed: S_C^liq(T_m) - S_C^gra(T_m)	24.6 J/mol (basis unstated)/K	liquid C	experimental	[1] He 2021 cites Spencer 1976	Table 2, p. 3, row 5 report
Entropy printed: S_C^liq(T_m) - S_C^gra(T_m)	24.6 J/mol (basis unstated)/K	liquid C	unspecified	[1] He 2021	Table 2, p. 3, row 6 report
Entropy printed: S_C^liq(T_m) - S_C^dia(T_m)	30.5 J/mol (basis unstated)/K	liquid C	unspecified	[1] He 2021	Table 2, p. 3, row 11 report
Entropy printed: S_C^liq(T_m) - S_C^dia(T_m)	29.3 J/mol (basis unstated)/K	liquid C	experimental	[1] He 2021 cites Spencer 1976	Table 2, p. 3, row 10 report
Heat capacity printed: C_P^liq(T_m)	28 J/mol (basis unstated)/K	liq	experimental	[2] He 2022 cites Chase 1982	Table 1, p. 2, row 10 report
Heat capacity printed: C_P^liq(T_m)	28.72 J/mol (basis unstated)/K	liq	model	[2] He 2022	Table 1, p. 2, row 12 report
Heat capacity printed: C_P^liq(T_m)	28 J/mol (basis unstated)/K	liq	model	[2] He 2022 cites He 2021 doi	Table 1, p. 2, row 11 report
Heat capacity printed: C_P^liq(T_m)	28 J/mol (basis unstated)/K	liquid C	unspecified	[1] He 2021	Table 2, p. 3, row 8 report
Heat capacity printed: C_P^liq(T_m)	28 J/mol (basis unstated)/K	liquid C	experimental	[1] He 2021 cites Valenzuela 1982 doi	Table 2, p. 3, row 7 report

Crystal structure (6)

Crystal structure, C system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	2.4612 Å	298.15	C alloy: C 1	model	[3] Duschanek 1995 cites Massalski 1990	Table 3, p. 4, row 3 report
Lattice a	2.464 Å	2909.15	C alloy: C 1	unspecified	[3] Duschanek 1995 cites ref. 66Rud	Table 3, p. 4, row 5 report
Lattice a	2.464 Å	3111.15	C alloy: C 1	unspecified	[3] Duschanek 1995 cites ref. 66Rud	Table 3, p. 4, row 4 report
Lattice c	6.709 Å	298.15	C alloy: C 1	model	[3] Duschanek 1995 cites Massalski 1990	Table 3, p. 4, row 3 report
Lattice c	6.714 Å	2909.15	C alloy: C 1	unspecified	[3] Duschanek 1995 cites ref. 66Rud	Table 3, p. 4, row 5 report
Lattice c	6.72 Å	3111.15	C alloy: C 1	unspecified	[3] Duschanek 1995 cites ref. 66Rud	Table 3, p. 4, row 4 report

Other property (3)

Other property, C system
Property	Value	Phases / composition	Class	Source	Location
Transition enthalpy printed: H_C^liq(Tm) − H_C^gra(Tm)	117318 J/mol	liquid	model	[2] He 2022 cites He 2021 doi	Table 1, p. 2, row 5 report
Transition enthalpy printed: H_C^liq(Tm) − H_C^gra(Tm)	118644 J/mol	liquid	model	[2] He 2022	Table 1, p. 2, row 6 report
Transition enthalpy printed: H_C^liq(Tm) − H_C^gra(Tm)	125520 J/mol	liquid	experimental	[2] He 2022 cites Leider 1973 doi	Table 1, p. 2, row 4 report

Sources

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

Zhangting He, Bartek Kaplan, Huahai Mao, Malin Selleby, The third generation Calphad description of Al–C including revisions of pure Al and C, Calphad 72, 102250 (2021). doi:10.1016/j.calphad.2021.102250
Zhangting He, Malin Selleby, A third generation Calphad description of W–C including a revision of liquid C, Calphad 78, 102449 (2022). doi:10.1016/j.calphad.2022.102449
H. Duschanek, P. Rogl, H. L. Lukas, A critical assessment and thermodynamic calculation of the boron-carbon-titanium (B-C-Ti) ternary system, JPE 16, 46-60 (1995). doi:10.1007/bf02646248

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}
}