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Description

Korea KS D 3731 (2002), STR37 Specialsteel Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STR37
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR37 Austenite KS Korea Heat - resisting steel bars

Chemical composition(mass fraction)(wt.%) of the STR37

C Si Mn P S Cr Ni Mo N
0.15 -0.25 ≤1.00 1.00 -1.60 ≤0.040 ≤0.030 20.50 -22.50 10.00 -12.00 ≤ ≥ 0.15 -0.30

Mechanical Properties of steel grade STR37

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)
553 (≥) 864 (≥) 31 42 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade STR37

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
22 - -     0.44 -  
542 934 - 32.3 323   -  
274 - 21 14.2   114 321

Heat Treatment of steel grade STR37

Heat treated : 1161°C - 1112°C

Technological Curves of steel grade STR37

Relevant standard of STR37

D 3731 (2002) Heat - resisting steel bars D-3731-(2002).pdf

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