A681 Type S4 T41904 - ASTM A681-2008(R2015)

Grade	A681 Type S4
USA UNS	T41904
AISI American Iron and Steel Institute	S4
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type S4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	V	More
Minimum Value	0.5	1.75	0.6	-	-	0.1	0.15	Ni+Cu≤0.75
Maximum Value	0.65	2.25	0.95	0.03	0.03	0.5	0.35	Ni+Cu≤0.75

A681 Type S4 Mechanical Properties

form	Heat Treatment or Condition	Hardness HBW
Bars, thick plates, thin plates, strips, rods, wires, forgings	Cold Drawing	BHN ≤255
Bars, thick plates, thin plates, strips, rods, wires, forgings	Annealing	BHN ≤229
Bars, thick plates, thin plates, strips, rods, wires, forgings	Heat Treatment	HRC ≥58

A681TypeS4 Corresponding Standards(Same grade name, different standards)

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