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Description

Korea KS D 3731 (2002), STR11 Specialsteel Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STR11
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR11 Martensite KS Korea Heat - resisting steel bars

Chemical composition(mass fraction)(wt.%) of the STR11

C Si Mn P S Cr Ni Mo N Cu
0.45 -0.55 ≤1.00 ≤2.00 ≤0.03 ≤0.03 7.50 -9.50 ≤0.60 ≤ ≥ ≤ ≥ ≤0.30

Mechanical Properties of steel grade STR11

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)
862 (≥) 343 (≥) 12 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade STR11

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 - -     0.43 -  
869 816 - 11.3 242   -  
768 - 21 31.2   314 124

Heat Treatment of steel grade STR11

Heat treated : 1366°C - 1363°C

Technological Curves of steel grade STR11

Relevant standard of STR11

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

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