SUP9 - JIS G 4801-2005

Grade	SUP9
Corresponding Standard	JIS G 4801-2005 Spring Steels
Brand/Supplier	Japan -> JFE Steel -> POSCO -> BAOSTEEL
Classification	Spring Steel
Properties	Elasticity

SUP9 Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^①	S ^①	Cr
Minimum Value	0.52	0.15	0.65	-	-	0.65
Maximum Value	0.6	0.35	0.95	0.03	0.03	0.95

1 Approximate Comparison Table Spring Steel

China		Taiwan, China	Japan	South Korea	United States		International Organization for Standardization	Germany		France	United Kingdom
GB	ISC	CNS	JIS	KS	AISI	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	BS EN/BS
55CrMnA	A22553	SUP9	SUP9	SPS5	5155	G51550	55Cr3	55Cr3	1.7176	55C3	≈527A60

2 Approximate Comparison Table Spring Steel 1

SUP9 Corresponding Standards(Same grade name, different standards)

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