A681 Type H41 T20841 - ASTM A681-2024

Grade	A681 Type H41
USA UNS	T20841
AISI American Iron and Steel Institute	H41
Corresponding Standard	ASTM A681-2024 Tool Steels Alloy
Classification	Tool Steel

A681 Type H41 Chemical Element Composition Content (%)

Component	C ^*	Si	Mn	P	S	Cr	Mo	W	V	More
Minimum Value	0.6	0.2	0.15	-	-	3.5	8.2	1.4	1	Ni+Cu≤0.75
Maximum Value	0.75	0.45	0.4	0.03	0.03	4	9.2	2.1	1.3	Ni+Cu≤0.75

*Available in several carbon ranges.

A681 Type H41 Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
condition of delivery	Cold Drawing	BHN ≤262
condition of delivery	Annealing	BHN ≤235
specimen	Preheat at 788±14 ℃, heat at 1177±5.6℃(controlled atmosphere) or 1163℃(salt bath), hold for 5 to 15 min,air cool. Temper twice at 552±5.6℃, each time for 2 h	HRC ≥60

A681TypeH41 Corresponding Standards(Same grade name, different standards)

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