A681 Type A9 T30109 - ASTM A681-2008(R2015)

Grade	A681 Type A9
USA UNS	T30109
AISI American Iron and Steel Institute	A9
Corresponding Standard	ASTM A681-2008(R2015) Standard Specification for Tool Steels Alloy
Classification	Tool Steel

A681 Type A9 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V	More
Minimum Value	0.45	0.95	0.2	-	-	4.75	1.25	1.3	0.8	Ni+Cu≤0.75
Maximum Value	0.55	1.15	0.5	0.03	0.03	5.5	1.75	1.8	1.4	Ni+Cu≤0.75

A681 Type A9 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 ≤248
Bars, Thick Plates, Thin Plates, Strips, Rods, Wires, Forgings	Heat Treatment	HRC ≥56

A681TypeA9 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"!