R39001

Classification

Country	Section	Category
USA	Reactive and Refractory Metals and Alloys	Cobalt

Chemical composition

Standard	Fe, %	Si, %	B, %	Cr, %	Ni, %	Al, %	P, %	C, %	S, %	Mo, %	Se, %
UNS	< 1	7.5–8.5	0.7–0.9	18–20	16–18	< 0.05	< 0.02	0.35–0.45	< 0.02	51.055–57.45	< 0.005

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Standards

Standard	Description
UNS

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Cr	%	Chrome
Ni	%	Nickel
Al	%	Aluminium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum
Se	%	Selenium