X12CrCoNi 21-20 1.4971 - EN 10088-1-2005

Grade	X12CrCoNi 21-20
European Standard Steel Grade	1.4971
Corresponding Standard	EN 10088-1-2005 Staehle Stainless steels. Part 1:List of stainless steels
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance
Density	8.3 g/cm³

X12CrCoNi 21-20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	W	Nb	Co
Minimum Value	0.08	-	-	-	-	20	19	2.5	0.1	2	0.75	18.5
Maximum Value	0.16	1	2	0.035	0.015	22.5	21	3.5	0.2	3	1.25	21

① Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel.

1 Approximate Comparison Table Heat-Resistant Stainless Steel

China	Taiwan, China	Japan	South Korea	United States		Germany		European Standard
GB	CNS	JIS	KS	ASTM	UNS	DIN EN/DIN	W-Nr.	EN	Numerical Grade
1Cr22Ni20Co20Mo3W3NbN	SUH 661	SUH 661	STR 661	661	R30155	X12CrCoNi 21-20	1.4971	X12CrCoNiMoWNb 21-20-20	1.4971

2 Approximate Comparison Table Deformed High-Temperature Alloy

China	Japan	United States			Germany			France
GB	JIS	Commercial Grade	SAE	AMS	DIN EN/DIN	W-Nr.	L-Nr.	NF EN/NF
(GH19)	SUH 661	N 155	HEV1	5531 5585	X12CrCoNi 21-20	1.4971	1.4974	ATG X Z12CNKDW 20

3 Approximate Comparison Table Austenitic Stainless Steel

Japan	International Organization for Standardization		European Standard
JIS	ISO	Numerical Grade	Numerical Grade
SUH661	X12CrNiCoMoWMnNNb21-20-20-3-3-2	4971-314-79-I	1.4971

X12CrCoNi21-20 Corresponding Standards(Same grade name, different standards)

1	EN 10088-1-2005
	X12CrCoNi 21-20 1.4971
2	EN 10302-2008
	X12CrCoNi 21-20 1.4971

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