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Korea KS STR616 Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STR616 / STR 616
Category Grade Standard Region/Area Standard Content
Metals STR 616 KS D 3731 Korea Heat - resisting steel bars

Chemical composition(mass fraction)(wt.%) of the STR 616

Element Min Max Similar
W 0.7500 1.2500 -
V 0.2000 0.3000 -
Cu - 0.3000 -
Mo 0.7500 1.2500 -
Ni 0.5000 1.0000 -
Cr 11.0000 13.0000 -
P - 0.0400 -
S - 0.0300 -
Mn 0.5000 1.0000 -
Si - 0.5000 -
C 0.2000 0.2500 -
W 0.7500 1.2500 -
V 0.2000 0.3000 -
Si - 0.5000 -
S - 0.0300 -
P - 0.0400 -
Ni 0.5000 1.0000 -
Mo 0.7500 1.2500 -
Mn 0.5000 1.0000 -
Cu - 0.3000 -
Cr 11.0000 13.0000 -
C 0.2000 0.2500 -

Mechanical Properties of steel grade STR 616

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)
496 (≥) 621 (≥) 11 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade STR 616

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 - -     0.33 -  
842 929 - 34.3 243   -  
312 - 23 32.2   143 124

Heat Treatment of steel grade STR 616

Heat treated : 1147°C - 1213°C

Technological Curves of steel grade STR 616

Cross Reference Table (Equivalent Grade) of STR 616

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