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America SAE 51L20 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 51L20 / 51L20
Category Grade Standard Region/Area Standard Content
Metals 51L20 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 51L20

Element Min Max Similar

Mechanical Properties of steel grade 51L20

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)
956 (≥) 939 (≥) 44 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 51L20

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 - -     0.11 -  
449 264 - 33.3 412   -  
453 - 22 22.2   212 431

Heat Treatment of steel grade 51L20

Heat treated : 1729°C - 1217°C

Technological Curves of steel grade 51L20

Cross Reference Table (Equivalent Grade) of 51L20

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