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China GB HLK7-50 铝土矿石 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HLK7-50 / HLK7-50
Category Grade Standard Region/Area Standard Content
Metals HLK7-50 GB/T 24483 China 铝土矿石

Chemical composition(mass fraction)(wt.%) of the HLK7-50

Element Min Max Similar
水分 - 8.0000 -
TiO2 - 2.0000 -
Fe2O3 - 18.0000 -
Al2O3 50.0000 - -
w(Fe2O3)/w(SiO2) 7.0000 - -

Mechanical Properties of steel grade HLK7-50

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)
458 (≥) 352 (≥) 12 14 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade HLK7-50

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
21 - -     0.31 -  
773 282 - 43.3 412   -  
235 - 32 43.2   344 212

Heat Treatment of steel grade HLK7-50

Heat treated : 1915°C - 1919°C

Technological Curves of steel grade HLK7-50

Cross Reference Table (Equivalent Grade) of HLK7-50

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