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Hungary MSZ KL7C Steels for boilers and pressure vessels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: KL7C / KL 7 C
Category Grade Standard Region/Area Standard Content
Metals KL 7 C MSZ 1741 Hungary Steels for boilers and pressure vessels

Chemical composition(mass fraction)(wt.%) of the KL 7 C

Element Min Max Similar
Si 0.2000 0.6000 -
S - 0.0300 -
Pb - 0.3500 -
P - 0.0350 -
Ni - 1.2000 -
Mn - 1.5000 -
Cr - 0.3000 -
C 0.1400 0.2000 -

Mechanical Properties of steel grade KL 7 C

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)
936 (≥) 255 (≥) 33 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade KL 7 C

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 - -     0.32 -  
671 913 - 34.3 331   -  
439 - 33 33.2   114 421

Heat Treatment of steel grade KL 7 C

Heat treated : 1517°C - 1285°C

Technological Curves of steel grade KL 7 C

Cross Reference Table (Equivalent Grade) of KL 7 C

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