A681 Type H14 T20814 - ASTM A681-2024

Grade	A681 Type H14
USA UNS	T20814
AISI American Iron and Steel Institute	H14
Corresponding Standard	ASTM A681-2024 Tool Steels Alloy
Classification	Alloy Steel

A681 Type H14 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	W	More
Minimum Value	0.35	0.8	0.2	-	-	4.75	4	Ni+Cu≤0.75
Maximum Value	0.45	1.25	0.6	0.03	0.03	5.5	5.25	Ni+Cu≤0.75

A681 Type H14 Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
condition of delivery	Annealing	BHN ≤235
condition of delivery	Cold Drawing	BHN ≤262
specimen	Preheat at 788±14 ℃, heat at 1052±5.6℃(controllable atmosphere) or 1038℃(salt bath), hold for 5 to 15 min, air cool. Temper at 552±5.6℃ twice, each time for 2 h	HRC ≥55

A681TypeH14 Corresponding Standards(Same grade name, different standards)

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