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X 8 CrNiMoBNb 16 16 S

Austria ONORM X8CrNiMoBNb1616S Bolting steels for boilers and pressure vessels; quality specifications and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals X 8 CrNiMoBNb 16 16 S ÖNORM M3120 Austria Bolting steels for boilers and pressure vessels; quality specifications

Chemical composition(mass fraction)(wt.%) of the X 8 CrNiMoBNb 16 16 S

Element Min Max Similar
Si 0.3000 0.6000 -
S - 0.0300 -
P - 0.0450 -
Ni 15.5000 17.5000 -
Nb - - -
Mo 1.6000 2.0000 -
Mn - 1.5000 -
Cr 15.5000 17.5000 -
C 0.0400 0.1000 -
B 0.0500 0.1000 -

Mechanical Properties of steel grade X 8 CrNiMoBNb 16 16 S

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)
843 (≥) 219 (≥) 31 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade X 8 CrNiMoBNb 16 16 S

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
41 - -     0.11 -  
891 577 - 24.3 342   -  
822 - 41 21.2   122 442

Heat Treatment of steel grade X 8 CrNiMoBNb 16 16 S

Heat treated : 1189°C - 1999°C

Technological Curves of steel grade X 8 CrNiMoBNb 16 16 S

Cross Reference Table (Equivalent Grade) of X 8 CrNiMoBNb 16 16 S

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