R31537 Co-28Cr-6Mo - ASTM F1537-2011

USA UNS	R31537
Other Names
Corresponding Standard	ASTM F1537-2011 Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)
Classification	Cobalt and Cobalt Alloys

Chemical Element Composition Content (%)

Component	Fe	C	Si	Mn	Cr	Ni	Mo	N	More
Minimum Value	-	-	-	-	26	-	5	-	Co:余量
Maximum Value	0.75	0.14	1	1	30	1	7	0.25	Co:余量

Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Alloy	Annealed	≥897	≥517	≥20	≥20	HRC: 25
Alloy	Hot Worked	≥1000	≥700	≥12	≥12	HRC: 28
Alloy	Warm Worked	≥1172	≥827	≥12	≥12	HRC: 35

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