A681 Type P20 T51620 - ASTM A681-2008(R2015)

Grade	A681 Type P20
USA UNS	T51620
AISI American Iron and Steel Institute	P20
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type P20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	More
Minimum Value	0.28	0.2	0.6	-	-	1.4	0.3	Ni+Cu≤0.75
Maximum Value	0.4	0.8	1	0.03	0.03	2	0.55	Ni+Cu≤0.75

Approximate Comparison Table Alloy Tool Steel 2

China		United States	International Organization for Standardization	European Standard
GB	ISC	ASTM	ISO	Numerical Grade
3Cr2Mo	T23020	P20	35CrMo7	1. 2302

A681TypeP20 Corresponding Standards(Same grade name, different standards)

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