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X2CrNiMnMoNNb 21-15-7-3

Description

X2CrNiMnMoNNb 21-15-7-3 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: X2CrNiMnMoNNb 21-15-7-3
Category Type Steel Grade Standard Country Application
Steel GradesAlloy Steel X2CrNiMnMoNNb 21-15-7-3
X40MnCrN 19
1.3816
X8CrMnN 18-8
1.3818
X55MnCrN 18-4
1.3817
X40MnCr 18
1.3819
X50MnCrV 20-14
1.3914

Chemical composition(mass fraction)(wt.%) of the X2CrNiMnMoNNb 21-15-7-3

 

Si 
Mn 
 P
 S
Cr   Ni  Mo  Other
  0.030  0.75  6.00-8.00  0.025 0.010   20.0-22.0  14.0-16.0  3.00-3.50  Nb 0.10-0.25
N 0.35-0.50

Mechanical Properties of steel grade X2CrNiMnMoNNb 21-15-7-3

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)
482 (≥) 821 (≥) 44 21 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade X2CrNiMnMoNNb 21-15-7-3

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
34 - -     0.21 -  
562 318 - 14.3 222   -  
419 - 13 14.2   111 442

Heat Treatment of steel grade X2CrNiMnMoNNb 21-15-7-3

Heat treated : 1429°C - 1549°C

Technological Curves of steel grade X2CrNiMnMoNNb 21-15-7-3


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