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Z12CKNDWNb21-20-20

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第一页 Z20CN21-12Az
#Z12CKNDWNb21-20-20

Description

France AFNOR Z12CKNDWNb21-20-20 Steel Exhaust Valves and Z12CKNDWNb21-20-20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: Z12CKNDWNb21-20-20
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel Z12CKNDWNb21-20-20 AFNOR France Steel Exhaust Valves
NiCr20TiAI
2.4952
NiFe25Cr20NbTi
2.4955
Fe-Ni36
45SiCr90
45WNiCrl80
53NNiMnCr210
80SiNiCr200
80SiNiMoWCr15

Chemical composition(mass fraction)(wt.%) of the Z12CKNDWNb21-20-20

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) N(%) Co(%) Nb(%)
0.08-0.16 Max 1.00 1.00-2.00 Max 0.040 Max 0.030 20.0-22.5 19.0-21.0 2.50-3.50 2.00-3.00 0.10-0.20 18.5-21.0 0.75-1.25

Mechanical Properties of steel grade Z12CKNDWNb21-20-20

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)
451 (≥) 762 (≥) 33 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 111

Physical Properties of steel grade Z12CKNDWNb21-20-20

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
44 - -     0.22 -  
535 158 - 32.3 421   -  
673 - 14 41.2   324 313

Heat Treatment of steel grade Z12CKNDWNb21-20-20

Heat treated : 1974°C - 1241°C

Technological Curves of steel grade Z12CKNDWNb21-20-20

Cross Reference Table (Equivalent Grade) of Z12CKNDWNb21-20-20

Grade Standard Country Application
Z12CKNDWNb21-20-20 AFNOR France The vent valve steel
Z12CKNDWNb21-20-20 AFNOR France Steel Exhaust Valves
第一页 Z20CN21-12Az
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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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