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Russia GOST KT-2 Carbon steel spring wire. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: KT-2 / KT-2
Category Grade Standard Region/Area Standard Content
Metals KT-2 GOST 9389 Russia Carbon steel spring wire. Specifications

Chemical composition(mass fraction)(wt.%) of the KT-2

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0200 -
P - 0.0200 -
Ni - 0.0500 -
Mn 0.2000 0.4000 -
Cu - 0.1000 -
Cr - 0.0500 -
C 0.8600 0.9100 -

Mechanical Properties of steel grade KT-2

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)
957 (≥) 783 (≥) 34 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade KT-2

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
14 - -     0.14 -  
973 618 - 43.3 422   -  
286 - 43 32.2   441 333

Heat Treatment of steel grade KT-2

Heat treated : 1274°C - 1994°C

Technological Curves of steel grade KT-2

Cross Reference Table (Equivalent Grade) of KT-2

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