A681 Type D5 T30405 - ASTM A681-2024

Grade	A681 Type D5
USA UNS	T30405
AISI American Iron and Steel Institute	D5
Corresponding Standard	ASTM A681-2024 Tool Steels Alloy
Classification	Tool Steel

A681 Type D5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V	Co	More
Minimum Value	1.4	0.1	0.1	-	-	11	0.7	-	2.5	Ni+Cu≤0.75
Maximum Value	1.6	0.6	0.6	0.03	0.03	13	1.2	1	3.5	Ni+Cu≤0.75

A681 Type D5 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 ≥61

A681TypeD5 Corresponding Standards(Same grade name, different standards)

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