S20CK - JIS G 4051-2023

Grade	S20CK
Corresponding Standard	JIS G 4051-2023 Carbon Steels for Machine Structural Use
Classification	Carbon Steel

S20CK Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	More
Minimum Value	0.18	0.15	0.3	-	-	-	-	-	Ni+Cr≤0.3
Maximum Value	0.23	0.35	0.6	0.025	0.025	0.2	0.2	0.25	Ni+Cr≤0.3

① Alloy elements not given in thistable shall not be intentionally added for other purposes than finishing the heat.
② The limit may be 0.30% or under upon agreement between the purchaser and the manufacturer.
③ The upper limit of Ni+Cr may be 0.40% or under for S09CK,S15CK and S20CK and 0.45% or under for other grades, upon agreement between the purchaser and the manufacturer.

S20CK Corresponding Standards(Same grade name, different standards)

1	JIS G 4051-2005
	S20CK
2	JIS G 4051-2016
	S20CK
3	JIS G 4051-2023
	S20CK

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!