X12CrCoNi 21-20 1.4971 - EN 10302-2008

Grade	X12CrCoNi 21-20
European Standard Steel Grade	1.4971
Corresponding Standard	EN 10302-2008 Creep resisting steels,nickel and cobalt alloys
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

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

X12CrCoNi 21-20 Mechanical Properties

diameter/width d/b mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
-*	+AT	690~900	≥300	≥30
b≥3**	+AT	690~900	≥300	≥35

1 Approximate Comparison Table Heat-Resistant Stainless Steel

2 Approximate Comparison Table Deformed High-Temperature Alloy

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)

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