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Description

Korea KS D 3731 (2002), D 3732 (2002), STR660 Specialsteel Heat - resisting steel plates and sheets and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STR660
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR660 Austenite KS Korea Heat - resisting steel plates and sheets

Chemical composition(mass fraction)(wt.%) of the STR660

C Si Mn P S Cr Ni Mo N Al Ti V B
≤0.08 ≤1.00 ≤2.00 ≤0.040 ≤0.030 13.50 -16.00 24.00 -27.00 1.00 -1.50 ≤ ≥ ≤0.35 1.90 -2.35 0.10 -0.50 0.001 -0.010

Mechanical Properties of steel grade STR660

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)
547 (≥) 584 (≥) 31 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade STR660

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
12 - -     0.24 -  
121 283 - 34.3 233   -  
437 - 34 42.2   321 214

Heat Treatment of steel grade STR660

Heat treated : 1355°C - 1233°C

Technological Curves of steel grade STR660

Relevant standard of STR660

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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