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Korea KS STKT540 High tensile strength steel tubes for tower structural purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STKT540 / STKT 540
Category Grade Standard Region/Area Standard Content
Metals STKT 540 KS D 3780 Korea High tensile strength steel tubes for tower structural purposes

Chemical composition(mass fraction)(wt.%) of the STKT 540

Element Min Max Similar

Mechanical Properties of steel grade STKT 540

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)
986 (≥) 286 (≥) 13 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade STKT 540

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
13 - -     0.41 -  
967 539 - 14.3 342   -  
667 - 42 11.2   213 313

Heat Treatment of steel grade STKT 540

Heat treated : 1935°C - 1317°C

Technological Curves of steel grade STKT 540

Cross Reference Table (Equivalent Grade) of STKT 540

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