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China YS AO-4 氧化铝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AO-4 / AO-4
Category Grade Standard Region/Area Standard Content
Metals AO-4 YS/T 274 China 氧化铝

Chemical composition(mass fraction)(wt.%) of the AO-4

Element Min Max Similar
灼减 - 1.0000 -
Na2O - 0.7000 -
Fe2O3 - 0.0500 -
SiO2 - 0.0800 -
Al2O3 98.2000 - -

Mechanical Properties of steel grade AO-4

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)
482 (≥) 419 (≥) 42 41 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade AO-4

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
34 - -     0.13 -  
516 513 - 22.3 122   -  
769 - 31 42.2   341 413

Heat Treatment of steel grade AO-4

Heat treated : 1428°C - 1662°C

Technological Curves of steel grade AO-4

Cross Reference Table (Equivalent Grade) of AO-4

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