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India IS HB20 Specification for Wrought aluminium alloy bolt and screw stock for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HB20 / HB20
Category Grade Standard Region/Area Standard Content
Metals HB20 IS 1284 India Specification for Wrought aluminium alloy bolt and screw stock for general engineering purposes

Chemical composition(mass fraction)(wt.%) of the HB20

Element Min Max Similar

Mechanical Properties of steel grade HB20

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)
266 (≥) 187 (≥) 21 12 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade HB20

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
43 - -     0.22 -  
966 791 - 24.3 222   -  
318 - 43 32.2   221 222

Heat Treatment of steel grade HB20

Heat treated : 1164°C - 1628°C

Technological Curves of steel grade HB20

Cross Reference Table (Equivalent Grade) of HB20

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