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Description

Korea KS D 3731 (2002), STR616 Specialsteel Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STR616
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR616 Martensite KS Korea Heat - resisting steel bars

Chemical composition(mass fraction)(wt.%) of the STR616

C Si Mn P S Cr Ni Mo N Cu W V
0.20 -0.25 ≤0.50 0.50 -1.00 ≤0.04 ≤0.03 11.00 -13.00 0.50 -1.00 0.75 -1.25 ≤ ≥ ≤0.30 0.75 -1.25 0.20 -0.30

Mechanical Properties of steel grade STR616

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)
584 (≥) 164 (≥) 11 33 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade STR616

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 - -     0.34 -  
552 877 - 32.3 442   -  
661 - 12 32.2   333 422

Heat Treatment of steel grade STR616

Heat treated : 1538°C - 1638°C

Technological Curves of steel grade STR616

Relevant standard of STR616

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

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