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England B.S. HF12 Specification for wrought aluminium and aluminium alloys for general engineering purposes - forging stock and forgings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HF12 / HF 12
Category Grade Standard Region/Area Standard Content
Metals HF 12 BS 1472 England Specification for wrought aluminium and aluminium alloys for general engineering purposes - forging stock and forgings

Chemical composition(mass fraction)(wt.%) of the HF 12

Element Min Max Similar
Zn - 0.1500 -
Total Others - 0.1500 -
Total Each - 0.0500 -
Ti+Zr - 0.2500 -
Ti - 0.2000 -
Si 0.1500 0.2500 -
Ni 0.8000 1.4000 -
Mn - 0.2000 -
Mg 1.2000 1.8000 -
Fe 0.9000 1.4000 -
Cu 1.8000 2.7000 -
Al - - -

Mechanical Properties of steel grade HF 12

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)
881 (≥) 313 (≥) 42 13 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade HF 12

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
42 - -     0.43 -  
362 385 - 11.3 242   -  
517 - 31 33.2   311 113

Heat Treatment of steel grade HF 12

Heat treated : 1835°C - 1757°C

Technological Curves of steel grade HF 12

Cross Reference Table (Equivalent Grade) of HF 12

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