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Germany DIN 1.4903 High-temperature resisting CrMo steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.4903 / 1.4903
Category Grade Standard Region/Area Standard Content
Metals 1.4903 -- Germany High-temperature resisting CrMo steel

Chemical composition(mass fraction)(wt.%) of the 1.4903

Element Min Max Similar
V 0.1800 0.2500 -
Si - 0.5000 -
S - 0.0150 -
P - 0.0250 -
Ni - 0.4000 -
Nb 0.0600 0.1000 -
N 0.0300 0.0700 -
Mo 0.8500 1.0500 -
Mn 0.3000 0.6000 -
Cr 8.0000 9.5000 -
C 0.0800 0.1200 -
Al - 0.0300 -
V 0.1800 0.2500 -
Si - 0.5000 -
S - 0.0050 -
P - 0.0200 -
Ni - 0.3000 -
Nb 0.0600 0.1000 -
N 0.0300 0.0700 -
Mo 0.8500 1.0500 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr 8.0000 9.5000 -
C 0.0800 0.1200 -
Al - 0.0400 -
V 0.1800 0.2500 -
Si - 0.5000 -
S - 0.0150 -
P - 0.0250 -
Ni - 0.4000 -
Nb 0.0600 0.1000 -
N 0.0300 0.0700 -
Mo 0.8500 1.0500 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr 8.0000 9.5000 -
C 0.0800 0.1200 -
Al - 0.0400 -

Mechanical Properties of steel grade 1.4903

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)
995 (≥) 519 (≥) 12 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade 1.4903

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
12 - -     0.22 -  
127 278 - 23.3 324   -  
154 - 43 13.2   231 212

Heat Treatment of steel grade 1.4903

Heat treated : 1346°C - 1122°C

Technological Curves of steel grade 1.4903

Cross Reference Table (Equivalent Grade) of 1.4903

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