A681 Type A8 T30108 - ASTM A681-2008(R2015)

Grade	A681 Type A8
USA UNS	T30108
AISI American Iron and Steel Institute	A8
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type A8 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	W	More
Minimum Value	0.5	0.75	0.2	-	-	4.75	1.15	1	Ni+Cu≤0.75
Maximum Value	0.6	1.1	0.5	0.03	0.03	5.5	1.65	1.5	Ni+Cu≤0.75

A681 Type A8 Mechanical Properties

form	Heat Treatment or Condition	Hardness HBW
Bars, Thick Plates, Thin Plates, Strips, Rods, Wires, Forgings	Cold Drawing	BHN
Bars, Thick Plates, Thin Plates, Strips, Rods, Wires, Forgings	Annealing	BHN
Bars, Thick Plates, Thin Plates, Strips, Rods, Wires, Forgings	Heat Treatment	HRC ≥56

Approximate Comparison Table Hot Work Tool Steel

A681TypeA8 Corresponding Standards(Same grade name, different standards)

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