Sr system

25 accepted literature values from 7 paper(s) (experimental 6, model 6, DFT 3, unspecified 10); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	6
model	6
DFT	3
unspecified	10

Accepted values by property group
Property group	Values
invariant reaction	3
formation	2
crystal structure	18
other property	2

Invariant reactions (literature)

Invariant reactions reported in the literature for the Sr system (3)
T (K)	Reaction / phases	Class	Source	Location
820.15	polymorphic: (αSr)->(βSr)	model	[1] Wang 2003	Table 1, p. 2, row 33 report
820.15	polymorphic: (αSr)->(βSr)	model	[1] Wang 2003 cites Du 2002	Table 1, p. 2, row 32 report
820.15	polymorphic: (αSr)->(βSr)	experimental	[1] Wang 2003 cites Dinsdale 1991 doi	Table 1, p. 2, row 31 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, Sr system (2)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
Sr2Sr-C14		7.2511 kJ/mol-atom	0	unspecified			[2] Zhong 2006	Table 2, p. 4, row 21 report
fcc-Sr		0 kJ/mol-atom	0	unspecified			[2] Zhong 2006	Table 2, p. 4, row 23 report

Other properties

Crystal structure (18)

Crystal structure, Sr system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	6.027 Å	0	(αSr) alloy: Sr 1	DFT	[3] Li 2013	Table 1, p. 2, row 9 report
Lattice a	4.745 Å	0	(βSr) alloy: Sr 1	DFT	[3] Li 2013	Table 1, p. 2, row 11 report
Lattice a printed: a	7.814 Å	0	Sr2Sr-C14 alloy: Sr 1	unspecified	[2] Zhong 2006	Table 2, p. 4, row 21 report
Lattice a printed: a (=b=c)	5.996 Å	0	fcc-Sr alloy: Sr 1	unspecified	[2] Zhong 2006	Table 2, p. 4, row 23 report
Lattice a	6.084 Å	273.5	fcc (αSr) fcc (αSr):	unspecified	[4] Smith 1988 cites ref. 2	Table I, p. 2, row 3 report
Lattice a	6.023 Å	298.15	(αSr) alloy: Sr 1	unspecified	[5] Wang 2014	Table 1, p. 2, row 4 report
Lattice a	6.076 Å	298.15	(αSr) alloy: Sr 1	unspecified	[5] Wang 2014	Table 1, p. 2, row 3 report
Lattice a	6.082 Å	298.15	(αSr) alloy: Sr 1	experimental	[3] Li 2013 cites Bruzzone 1966	Table 1, p. 2, row 8 report
Lattice a	4.84 Å	298.15	(βSr) alloy: Sr 1	experimental	[3] Li 2013 cites Wang 1962 doi	Table 1, p. 2, row 10 report
Lattice a	4.87 Å	298.15	(βSr) alloy: Sr 1	unspecified	[5] Wang 2014	Table 1, p. 2, row 5 report
Lattice a	6.028 Å	298.15	fcc-Sr alloy: Sr 1	DFT	[6] Zhou 2014	Table 2, p. 4, row 9 report
Lattice a	6.084 Å	298.15	fcc-Sr alloy: Sr 1	experimental	[6] Zhou 2014 cites Villars 2004 doi	Table 2, p. 4, row 7 report
Lattice a	4.87 Å	658	bcc (βSr) bcc (βSr):	unspecified	[4] Smith 1988 cites ref. 2	Table I, p. 2, row 4 report
Lattice a	6.084 Å	820 (<)	(αSr) alloy: Sr 1	model	[7] Chen 2012 cites King 1981 doi	Table 2, p. 2, row 6 report
Lattice a	4.87 Å	1050 (<)	(βSr) alloy: Sr 1	model	[7] Chen 2012 cites Massalski 1986	Table 2, p. 2, row 7 report
Lattice c printed: c	12.84 Å	0	Sr2Sr-C14 alloy: Sr 1	unspecified	[2] Zhong 2006	Table 2, p. 4, row 21 report
volume printed: V	54.54 Å3/atom	0	fcc-Sr alloy: Sr 1	model	[6] Zhou 2014	Table 3, p. 4, row 5 report
volume printed: V	56.3 Å3/atom		fcc-Sr alloy: Sr 1	experimental	[6] Zhou 2014 cites Anderson 1990 doi	Table 3, p. 4, row 6 report

Other property (2)

Other property, Sr system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
bulk modulus printed: B	11.443 GPa	0	fcc-Sr alloy: Sr 1	model	[6] Zhou 2014	Table 3, p. 4, row 5 report
bulk modulus printed: B	11.88 GPa		fcc-Sr alloy: Sr 1	experimental	[6] Zhou 2014 cites Anderson 1990 doi	Table 3, p. 4, row 6 report

Sources

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

Chong Wang, Zhanpeng Jin, Yong Du, Thermodynamic modeling of the Al–Sr system, Journal of Alloys and Compounds 358, 288-293 (2003). doi:10.1016/s0925-8388(03)00046-x
Yu Zhong, Jorge O. Sofo, Alan A. Luo, Zi-Kui Liu, Thermodynamics modeling of the Mg–Sr and Ca–Mg–Sr systems, Journal of Alloys and Compounds 421, 172-178 (2006). doi:10.1016/j.jallcom.2005.09.076
Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013). doi:10.1016/j.calphad.2013.09.002
J. F. Smith, K. J. Lee, The Ca−V (Calcium-Vanadium), Sr−V (strontium-Vandadium), and Ba−V (Barium-Vanadium) systems, Bulletin of Alloy Phase Diagrams 9, 466-469 (1988). doi:10.1007/bf02881868
Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014). doi:10.1016/j.calphad.2013.12.001
Bi-Cheng Zhou, Shun-Li Shang, Zi-Kui Liu, First-principles calculations and thermodynamic modeling of the Sn−Sr and Mg−Sn−Sr systems, Calphad 46, 237-248 (2014). doi:10.1016/j.calphad.2014.04.003
Chong Chen, Man Wang, Yong Du, Qiannan Gao, Biao Hu, Shuhong Liu, Thermodynamic modeling of the Sr–X (X=H, Li, Na, Sc) systems, Calphad 38, 17-22 (2012). doi:10.1016/j.calphad.2012.03.001

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}
}