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Description

Korea KS D 3731 (2002), D 3732 (2002), STR446 Specialsteel Heat - resisting steel plates and sheets and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STR446
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR446 Ferrite KS Korea Heat - resisting steel plates and sheets

Chemical composition(mass fraction)(wt.%) of the STR446

C Si Mn P S Cr Ni Mo N Cu
≤0.20 ≤1.00 ≤1.50 ≤0.04 ≤0.03 23.00 -27.00 ≤0.60 ≤ ≥ ≤0.25 ≤0.30

Mechanical Properties of steel grade STR446

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)
424 (≥) 428 (≥) 23 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade STR446

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
43 - -     0.32 -  
329 283 - 23.3 431   -  
771 - 13 24.2   233 221

Heat Treatment of steel grade STR446

Heat treated : 1771°C - 1468°C

Technological Curves of steel grade STR446

Relevant standard of STR446

D 3731 (2002) Heat - resisting steel bars D-3731-(2002).pdf
D 3732 (2002) Heat - resisting steel plates and sheets D-3732-(2002).pdf

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