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China NB S22253 承压设备用不锈钢和耐热钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S22253 / S22253
Category Grade Standard Region/Area Standard Content
Metals S22253 NB/T 47010 China 承压设备用不锈钢和耐热钢锻件

Chemical composition(mass fraction)(wt.%) of the S22253

Element Min Max Similar
S - 0.0200 -
P - 0.0300 -
N 0.0800 0.2000 -
Mo 2.5000 3.5000 -
Ni 4.5000 6.5000 -
Cr 21.0000 23.0000 -
Mn - 2.0000 -
Si - 1.0000 -
C - 0.0300 -

Mechanical Properties of steel grade S22253

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)
321 (≥) 261 (≥) 13 34 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade S22253

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 - -     0.43 -  
338 851 - 44.3 414   -  
371 - 13 21.2   111 224

Heat Treatment of steel grade S22253

Heat treated : 1393°C - 1794°C

Technological Curves of steel grade S22253

Cross Reference Table (Equivalent Grade) of S22253

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