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Z20CN21-12Az

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Z12CKNDWNb21-20-20 Z25CNWS20-09
#Z20CN21-12Az

Description

France AFNOR Z20CN21-12Az Steel Exhaust Valves and Z20CN21-12Az Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: Z20CN21-12Az
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel Z20CN21-12Az AFNOR France Steel Exhaust Valves
Z12CKNDWNb21-20-20
2.4952
NiFe25Cr20NbTi
2.4955
Fe-Ni36
45SiCr90
45WNiCrl80
53NNiMnCr210
80SiNiCr200
80SiNiMoWCr15

Chemical composition(mass fraction)(wt.%) of the Z20CN21-12Az

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) N(%)
0.15-0.25 0.70-1.30 1.00-1.50 Max 0.040 Max 0.030 20.0-22.0 10.5-12.5 0.15-0.25

Mechanical Properties of steel grade Z20CN21-12Az

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
464 (≥) 175 (≥) 43 41 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade Z20CN21-12Az

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 - -     0.41 -  
213 435 - 31.3 231   -  
675 - 24 32.2   334 323

Heat Treatment of steel grade Z20CN21-12Az

Heat treated : 1618°C - 1577°C

Technological Curves of steel grade Z20CN21-12Az

Cross Reference Table (Equivalent Grade) of Z20CN21-12Az

Grade Standard Country Application
Z20CN21-12Az AFNOR France Steel Exhaust Valves
Z12CKNDWNb21-20-20 Z25CNWS20-09
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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