A681 Type S6 T41906 - ASTM A681-2008(R2015)

Grade	A681 Type S6
USA UNS	T41906
AISI American Iron and Steel Institute	S6
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type S6 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V	More
Minimum Value	0.4	2	1.2	-	-	1.2	0.3	0.2	Ni+Cu≤0.75
Maximum Value	0.5	2.5	1.5	0.03	0.03	1.5	0.5	0.4	Ni+Cu≤0.75

A681 Type S6 Mechanical Properties

	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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