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China YB LZ 铁路机车、车辆用车轴 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LZ / LZ
Category Grade Standard Region/Area Standard Content
Metals LZ YB 4061 China 铁路机车、车辆用车轴

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

Element Min Max Similar
Cu - 0.2500 -
Ni - 0.3000 -
Cr - 0.3000 -
S - 0.0450 -
P - 0.0400 -
Si 0.1500 0.3500 -
Mn 0.5000 0.8000 -
C 0.3700 0.4500 -

Mechanical Properties of steel grade LZ

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)
344 (≥) 575 (≥) 21 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade LZ

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 - -     0.44 -  
846 963 - 13.3 333   -  
379 - 22 22.2   231 212

Heat Treatment of steel grade LZ

Heat treated : 1889°C - 1415°C

Technological Curves of steel grade LZ

Cross Reference Table (Equivalent Grade) of LZ

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