A681 Type L6 T61206 - ASTM A681-2024

Grade	A681 Type L6
USA UNS	T61206
AISI American Iron and Steel Institute	L6
Corresponding Standard	ASTM A681-2024 Tool Steels Alloy
Classification	Alloy Steel

A681 Type L6 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	More
Minimum Value	0.65	0.1	0.25	-	-	0.6	1.25	-	Ni+Cu≤0.75
Maximum Value	0.75	0.5	0.8	0.03	0.03	1.2	2	0.5	Ni+Cu≤0.75

A681 Type L6 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 649±14 ℃, heat at 829±5.6℃(controlled atmosphere) or 816℃(salt bath), hold for 5 to 15 min, oil cool. Temper at 204±5.6℃ once for 2 h	HRC ≥58

1 Approximate Comparison Table Hot Work Tool Steel

2 Approximate Comparison Table Hot-Work Tool Steels

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
5CrNiMo	SKT4	L6	55NiCrMoV7	55NiCrMoV6 56NiCrMoV7	55NCDV7	55NiCrMoV7	1.2714	5KHNM 5KHNV	BH224-5

3 Approximate Comparison Table Alloy Tool Steel 2

A681TypeL6 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"!