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America AA 2018 Wrought alloys. Forgings. and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 2018 / 2018
Category Grade Standard Region/Area Standard Content
Metals 2018 -- America Wrought alloys. Forgings.

Chemical composition(mass fraction)(wt.%) of the 2018

Element Min Max Similar
Mn - 0.2000 -
Si - 0.9000 -
Ni 1.7000 2.3000 -
Cr - 0.1000 -
Cu 3.5000 4.5000 -
Al - - -
Zn - 0.2500 -
Mg 1.2000 1.8000 -
Fe - 1.0000 -
Others each - 0.0500 -
Others total - 0.1500 -
Mn - 0.2000 -
Si - 0.9000 -
Ni 1.7000 2.3000 -
Cr - 0.1000 -
Cu 3.5000 4.5000 -
Al - - -
Zn - 0.2500 -
Mg 1.2000 1.8000 -
Fe - 1.0000 -
Others total - 0.0500 -
Total Others - 0.1500 -

Mechanical Properties of steel grade 2018

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)
445 (≥) 613 (≥) 43 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 2018

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 - -     0.33 -  
156 226 - 44.3 144   -  
514 - 41 21.2   114 442

Heat Treatment of steel grade 2018

Heat treated : 1678°C - 1186°C

Technological Curves of steel grade 2018

Cross Reference Table (Equivalent Grade) of 2018

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