Kr — Properties & Data | MatWorld

Kr

metal

· JVASP-907· Kr

Kr is a transition metal with moderate elastic stiffness and density, positioned in the middle range of structural metals. It is primarily used in specialized aerospace, automotive, and high-strength structural applications where a balance between weight and rigidity is required, as well as in chemical processing equipment and corrosion-resistant components. Engineers select this material when performance envelopes demand intermediate strength-to-weight ratios or when corrosion resistance and thermal stability are critical factors over materials that are either too heavy or lack sufficient stiffness.

aerospace structuresautomotive chassis componentschemical processing equipmentstructural frameworkscorrosion-resistant fastenersthermal stability applications

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	648.3	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	406.1	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1134	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	7.258	eV	DFT · OptB88vdW
↳	10.83	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.221	-	DFT · OptB88vdW
↳	1.914	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000742	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00112	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-98.11	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	478.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.000280	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Kr

Mechanical Properties

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Regulatory Screening

Environmental

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