20Cr21Ni12N

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China GB 20Cr21Ni12N 内燃机气阀用钢及合金棒材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20Cr21Ni12N / 20Cr21Ni12N

Category	Grade	Standard	Region/Area	Standard Content
Metals	20Cr21Ni12N	GB/T 12773	China	内燃机气阀用钢及合金棒材

Chemical composition(mass fraction)(wt.%) of the 20Cr21Ni12N

Element	Min	Max	Similar
Si	0.7500	1.2500	-
S	-	0.0300	-
P	-	0.0350	-
Ni	10.5000	12.5000	-
N	0.1500	0.3000	-
Mn	1.0000	1.6000	-
Cu	-	0.3000	-
Cr	20.5000	22.5000	-
C	0.1500	0.2500	-

Mechanical Properties of steel grade 20Cr21Ni12N

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
479 (≥)	849 (≥)	21	41	34	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

Physical Properties of steel grade 20Cr21Ni12N

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
14	-	-			0.21	-
631	527	-	14.3	412		-
169	-	44	24.2			321	124

Heat Treatment of steel grade 20Cr21Ni12N

Heat treated : 1734°C - 1845°C

Technological Curves of steel grade 20Cr21Ni12N

No Curve

Cross Reference Table (Equivalent Grade) of 20Cr21Ni12N

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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