SKT 4 - JIS G 4404-2015

SKT 4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V
Minimum Value	0.5	0.1	0.6	-	-	0.8	1.5	0.35	0.05
Maximum Value	0.6	0.4	0.9	0.03	0.02	1.2	1.8	0.55	0.15

SKT 4 Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Rolled or Forged Products	Annealing	≤248
Rolled or Forged Products	Quenching and Tempering	HV 412

1 Approximate Comparison Table Hot Work Tool Steel

China		Japan	International Organization for Standardization
GB	ISC	JIS	ISO
5CrNi2MoV	T23515	SKT 4	55NiCrMoV 7

2 Approximate Comparison Table Hot-Work Tool Steels

Japan	International Organization for Standardization	Germany		European Standard
JIS	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
SKT4	55NiCrMoV7	55NiCrMoV7 (56NiCrMoV 7)	1.2714	55NiCrMoV7	1.2714

3 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

4 Approximate Comparison Table Alloy Tool Steel

5 Approximate Comparison Table Alloy Tool Steel 2

SKT4 Corresponding Standards(Same grade name, different standards)

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