A681 Type D2 T30402 - ASTM A681-2024

Grade	A681 Type D2
USA UNS	T30402
AISI American Iron and Steel Institute	D2
Corresponding Standard	ASTM A681-2024 Tool Steels Alloy
Classification	Tool Steel

A681 Type D2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V	More
Minimum Value	1.4	0.1	0.1	-	-	11	0.7	0.5	Ni+Cu≤0.75
Maximum Value	1.6	0.6	0.6	0.03	0.03	13	1.2	1.1	Ni+Cu≤0.75

A681 Type D2 Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
condition of delivery	Cold Drawing	BHN ≤269
condition of delivery	Annealing	BHN ≤255
specimen	Preheat to 816±14 ℃, heat to 1010±5.6℃(controllable atmosphere) or 996℃(salt bath), hold for 10 to 20 min, air cool. Temper at 204±5.6℃ once for 2 h	HRC ≥59

1 Approximate Comparison Table Alloy Cold-Work Tool Steel

China	Japan	United States	International Organization for Standardization
GB	JIS	ASTM	ISO
Cr12Mo1V1	SKD 10	D2	X153CrMoV12

2 Approximate Comparison Table Alloy Tool Steel 1

China		Japan	United States		International Organization for Standardization	Germany		France	United Kingdom
GB	ISC	JIS	ASTM	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	BS EN/BS
Cr12Mo1V1	T21202	SKD 10	D2	T30402	X153CrMoV12	X155CrVMo12-1	1.2379	X153CrMoV12	X153CrMoV12 BD2

3 Approximate Comparison Table Alloy Tool Steel 2

A681TypeD2 Corresponding Standards(Same grade name, different standards)

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