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China GB 2021 变形铝及铝合金化学成分 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 2021 / 2021
Category Grade Standard Region/Area Standard Content
Metals 2021 GB/T 3190 China 变形铝及铝合金化学成分

Chemical composition(mass fraction)(wt.%) of the 2021

Element Min Max Similar

Mechanical Properties of steel grade 2021

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)
366 (≥) 491 (≥) 44 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 2021

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 - -     0.22 -  
927 794 - 42.3 441   -  
237 - 21 44.2   211 222

Heat Treatment of steel grade 2021

Heat treated : 1117°C - 1716°C

Technological Curves of steel grade 2021

Cross Reference Table (Equivalent Grade) of 2021

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