A681 Type H23 T20823 - ASTM A681-2008(R2015)

Grade	A681 Type H23
USA UNS	T20823
AISI American Iron and Steel Institute	H23
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type H23 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	W	V	More
Minimum Value	0.25	0.15	0.15	-	-	11	11	0.75	Ni+Cu≤0.75
Maximum Value	0.35	0.6	0.4	0.03	0.03	12.75	12.75	1.25	Ni+Cu≤0.75

A681 Type H23 Mechanical Properties

form	Heat Treatment or Condition	Hardness HBW
Bars, thick plates, thin plates, strips, rods, wires, forgings	Cold Drawing	BHN ≤269
Bars, thick plates, thin plates, strips, rods, wires, forgings	Annealing	BHN ≤255
Bars, thick plates, thin plates, strips, rods, wires, forgings	Heat Treatment	HRC ≥42

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