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STS XM8TB

Korea KS STSXM8TB Stainless steel for boiler and heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STSXM8TB / STS XM8TB
Category Grade Standard Region/Area Standard Content
Metals STS XM8TB KS D 3577 Korea Stainless steel for boiler and heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the STS XM8TB

Element Min Max Similar
Ti+Nb+Zr - 0.8000 -
Ti - 1.1000 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Mn - 1.0000 -
Cr 17.0000 19.0000 -
C - 0.0800 -

Mechanical Properties of steel grade STS XM8TB

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)
266 (≥) 312 (≥) 34 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade STS XM8TB

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 - -     0.12 -  
697 975 - 13.3 223   -  
462 - 13 32.2   414 242

Heat Treatment of steel grade STS XM8TB

Heat treated : 1726°C - 1968°C

Technological Curves of steel grade STS XM8TB

Cross Reference Table (Equivalent Grade) of STS XM8TB

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