Cr system

26 accepted literature values from 7 paper(s) (experimental 5, model 12, DFT 3, unspecified 6); 0 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 · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	5
model	12
DFT	3
unspecified	6

Accepted values by property group
Property group	Values
phase transition	2
formation	1
activity / EMF / Gibbs energy	10
crystal structure	13

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, Cr system (1)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
sigma CrCrCrCrCr		12.1 kJ/mol-atom	0	DFT			[1] Palumbo 2010	Table 1, p. 4, row 1 report

Other properties

Phase transition (2)

Phase transition, Cr system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	2136.15 K	2136.15	Cr	experimental	[2] Campbell 2002 cites ref. 25	p. 5 report	The calculated m elting temperature o f 1907 'C for c hromium i s 4 4 degrees h igher t hart the melting temperature 1863 "C [25], which is used in most phase diagram evaluations.
Phase transition	2180.15 K	2180.15	Cr	model	[2] Campbell 2002	p. 5 report	The calculated m elting temperature o f 1907 'C for c hromium i s 4 4 degrees h igher t hart the melting temperature 1863 "C [25], which is used in most phase diagram evaluations.

Activity / EMF / Gibbs energy (10)

Activity / EMF / Gibbs energy, Cr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Gibbs energy printed: ΔG^φ_Para	4438 J/mol		HCP_A3 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 33 report
Gibbs energy printed: ΔG_Para^o	4438 J/mol		HCP_A3 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 33 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	0 J/mol	0	BCC_A2 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 27 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	0 J/mol	0	BCC_A2 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 27 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	-1564.84 J/mol	0	FCC_A1 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 21 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	-1564.84 J/mol	0	FCC_A1 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 21 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	-1564.84 J/mol	0	HCP_A3 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 33 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	-1564.84 J/mol	0	HCP_A3 alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 33 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	0 J/mol	0	σ alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 38 report
gibbs energy contribution printed: magΔG_i^φ/SER(0 K)	0 J/mol	0	σ alloy: Cr 1	model	[3] Santos 2024 cites Dinsdale 1991 doi	Table 2, p. 8, row 38 report

Crystal structure (13)

Crystal structure, Cr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	2.8548 Å		BCC Cr	unspecified	[4] Pavlů 2009	Table 1, p. 2, row 2 report
Lattice a printed: a	8.749 Å	0	sigma CrCrCrCrCr alloy: Cr 1	DFT	[1] Palumbo 2010	Table 1, p. 4, row 1 report
Lattice a	2.885 Å	298.15	(Cr) alloy: Cr 1	model	[5] Hu 2013 cites Massalski 1996	Table 3, p. 4, row 2 report
Lattice a	2.8787 Å	298.15	BCC Cr	experimental	[4] Pavlů 2009 cites Villars 1991	Table 1, p. 2, row 1 report
Lattice a	2.8848 Å	298.15	Cr Cr: Cr 1	unspecified	[6] Murray 1998 cites ref. 2	Table 3, p. 5, row 9 report
Lattice a	2.884 Å	2179.95 (<)	(Cr) alloy: Cr 1	unspecified	[7] Cao 2013 cites http://crystdb	Table 1, p. 2, row 4 report
Lattice c	2.8548 Å		BCC Cr	unspecified	[4] Pavlů 2009	Table 1, p. 2, row 2 report
Lattice c printed: c	4.561 Å	0	sigma CrCrCrCrCr alloy: Cr 1	DFT	[1] Palumbo 2010	Table 1, p. 4, row 1 report
Lattice c	2.8787 Å	298.15	BCC Cr	experimental	[4] Pavlů 2009 cites Villars 1991	Table 1, p. 2, row 1 report
lattice c a	1 not_printed		BCC Cr	unspecified	[4] Pavlů 2009	Table 1, p. 2, row 2 report
lattice c a	1 not_printed	298.15	BCC Cr	experimental	[4] Pavlů 2009 cites Villars 1991	Table 1, p. 2, row 1 report
lattice v atom	1.16327 10^7 pm^3		BCC Cr	unspecified	[4] Pavlů 2009	Table 1, p. 2, row 2 report
lattice v atom	1.19281 10^7 pm^3	298.15	BCC Cr	experimental	[4] Pavlů 2009 cites Villars 1991	Table 1, p. 2, row 1 report

Sources

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

M. Palumbo, T. Abe, C. Kocer, H. Murakami, H. Onodera, Ab initio and thermodynamic study of the Cr–Re system, Calphad 34, 495-503 (2010). doi:10.1016/j.calphad.2010.09.003
C.E. Campbell, U.R. Kattner, Assessment of the Cr-B system and extrapolation to the Ni-Al-Cr-B quaternary system, Calphad 26, 477-490 (2002). doi:10.1016/s0364-5916(02)00058-5
Júlio César Pereira dos Santos, Sean Griesemer, Nathalie Dupin, Ursula R. Kattner, Chuan Liu, Daniela Ivanova et al., Applying the Effective Bond Energy Formalism (EBEF) to Describe the Sigma (σ) Phase in the Co-Cr-Ni-Re System, J. Phase Equilib. Diffus. 45, 330-357 (2024). doi:10.1007/s11669-023-01079-3
J. Pavlů, J. Vřešt’ál, M. Šob, Stability of Laves phases in the Cr–Zr system, Calphad 33, 382-387 (2009). doi:10.1016/j.calphad.2008.11.003
Biao Hu, Wei-Wei Zhang, Yingbiao Peng, Yong Du, Shuhong Liu, Yuelan Zhang, Thermodynamic reassessment of the Al–Cr–Si system with the refined description of the Al–Cr system, Thermochimica Acta 561, 77-90 (2013). doi:10.1016/j.tca.2013.03.033
J. L. Murray, The Al-Cr (aluminum-chromium) system, JPE 19, 367-375 (1998). doi:10.1007/bf02735058
Z. Cao, J. Xin, C. Chen, S. Liu, B. Hu, C. Tang et al., Thermodynamic modeling of the Bi-M (M = Ti, Cr, V) systems, J min metall B Metall 49, 307-313 (2013). doi:10.2298/jmmb130127033c

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}
}