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America SAE HR2 Categorization and properties of low-carbon automotive sheet steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HR2 / HR 2
Category Grade Standard Region/Area Standard Content
Metals HR 2 SAE J 2329 America Categorization and properties of low-carbon automotive sheet steels

Chemical composition(mass fraction)(wt.%) of the HR 2

Element Min Max Similar

Mechanical Properties of steel grade HR 2

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)
143 (≥) 552 (≥) 33 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade HR 2

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 - -     0.24 -  
295 315 - 41.3 133   -  
695 - 41 44.2   223 324

Heat Treatment of steel grade HR 2

Heat treated : 1481°C - 1854°C

Technological Curves of steel grade HR 2

Cross Reference Table (Equivalent Grade) of HR 2

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