SK90 - JIS G 4401-2022

SK90 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.85	0.1	0.1	-	-	-	-	-
Maximum Value	0.95	0.35	0.5	0.03	0.03	0.3	0.25	0.25

1 Approximate Comparison Table Carbon Tool Steel

China		Japan	United States		International Organization for Standardization	European Standard
GB	ISC	JIS	ASTM	UNS	Numerical Grade	EN
T9	T00090	SK90	W1-8 1/2	T72301	C90U	C90U

2 Approximate Comparison Table Carbon Tool Steel 1

China		Japan	United States		International Organization for Standardization	France	Russia	United Kingdom
GB	ISC	JIS	ASTM	UNS	ISO	NF EN/NF	GOST	BS EN/BS
T9	T00090	SK90	W1A-8 1/2	T72301	C90U	C90U C90E2U	У9-1	C90U BW1A

SK90 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"!