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America SAE 48L20 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 48L20 / 48L20
Category Grade Standard Region/Area Standard Content
Metals 48L20 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 48L20

Element Min Max Similar

Mechanical Properties of steel grade 48L20

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)
523 (≥) 949 (≥) 33 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade 48L20

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 - -     0.34 -  
647 861 - 24.3 124   -  
658 - 43 13.2   221 413

Heat Treatment of steel grade 48L20

Heat treated : 1945°C - 1914°C

Technological Curves of steel grade 48L20

Cross Reference Table (Equivalent Grade) of 48L20

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