A681 Type H19 T20819 - ASTM A681-2008(R2015)

Grade	A681 Type H19
USA UNS	T20819
AISI American Iron and Steel Institute	H19
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type H19 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	W	V	Co	More
Minimum Value	0.32	0.15	0.2	-	-	4	0.3	3.75	1.75	4	Ni+Cu≤0.75
Maximum Value	0.45	0.5	0.5	0.03	0.03	4.75	0.55	4.5	2.2	4.5	Ni+Cu≤0.75

A681 Type H19 Mechanical Properties

form	Heat Treatment or Condition	Hardness HBW
Bars, thick plates, thin plates, strips, rods, wires, forgings	Cold Drawing	BHN ≤262
Bars, thick plates, thin plates, strips, rods, wires, forgings	Annealing	BHN ≤241
Bars, thick plates, thin plates, strips, rods, wires, forgings	Heat Treatment	HRC ≥55

A681TypeH19 Corresponding Standards(Same grade name, different standards)

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