A681 Type D4 T30404 - ASTM A681-2008(R2015)

Grade	A681 Type D4
USA UNS	T30404
AISI American Iron and Steel Institute	D4
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type D4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V	More
Minimum Value	2.05	0.1	0.1	-	-	11	0.7	0.15	Ni+Cu≤0.75
Maximum Value	2.4	0.6	0.6	0.03	0.03	13	1.2	1	Ni+Cu≤0.75

A681 Type D4 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 ≥62

Approximate Comparison Table Alloy Tool Steel

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!