A681 Type S7 T41907 - ASTM A681-2008(R2015)

Grade	A681 Type S7
USA UNS	T41907
AISI American Iron and Steel Institute	S7
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type S7 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V	More
Minimum Value	0.45	0.2	0.2	-	-	3	1.3	-	Ni+Cu≤0.75
Maximum Value	0.55	1	0.9	0.03	0.03	3.5	1.8	0.35	Ni+Cu≤0.75

A681 Type S7 Mechanical Properties

form	Heat Treatment or Condition	Hardness HBW
Bars, thick plates, thin plates, strips, rods, wires, forgings	Cold Drawing	BHN ≤255
Bars, thick plates, thin plates, strips, rods, wires, forgings	Annealing	BHN ≤229
Bars, thick plates, thin plates, strips, rods, wires, forgings	Heat Treatment	HRC ≥56

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