F568M Class 12.9 - ASTM F568M-2007

Grade	F568M Class 12.9
Corresponding Standard	ASTM F568M-2007 Carbon and Alloy Steel Externally Threaded Metric Fasteners
Classification	Alloy Steel

F568M Class 12.9 Chemical Element Composition Content (%)

Component	C	P	S
Minimum Value	0.31	-	-
Maximum Value	0.65	0.045	0.045

F568M Class 12.9 Mechanical Properties

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
Quenching + Tempering, minimum tempering temperature 325°C	≥1220	≥1100	≥8	≥35	HRC 38~44

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