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X 53 CrMnNiNb 21-09

Spain UNE X53CrMnNiNb21-09 Valve steel for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals X 53 CrMnNiNb 21-09 UNE 36022 Spain Valve steel for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the X 53 CrMnNiNb 21-09

Element Min Max Similar
Si - 0.2500 -
S - 0.0350 -
P - 0.0400 -
Ni 3.2500 4.5000 -
Nb 2.0000 3.0000 -
N 0.3800 0.5000 -
Mn 8.0000 10.0000 -
Cr 20.0000 22.0000 -
C 0.4800 0.5800 -

Mechanical Properties of steel grade X 53 CrMnNiNb 21-09

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)
315 (≥) 882 (≥) 33 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade X 53 CrMnNiNb 21-09

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
13 - -     0.24 -  
973 377 - 24.3 342   -  
535 - 32 13.2   444 322

Heat Treatment of steel grade X 53 CrMnNiNb 21-09

Heat treated : 1339°C - 1651°C

Technological Curves of steel grade X 53 CrMnNiNb 21-09

Cross Reference Table (Equivalent Grade) of X 53 CrMnNiNb 21-09

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