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Grade 8.2

America SAE Grade8.2 Mechanical and material requirements for externally threaded fasteners and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Grade8.2 / Grade 8.2
Category Grade Standard Region/Area Standard Content
Metals Grade 8.2 SAE J 429 America Mechanical and material requirements for externally threaded fasteners

Chemical composition(mass fraction)(wt.%) of the Grade 8.2

Element Min Max Similar
S - 0.0250 -
P - 0.0250 -
Mn 0.7400 - -
C 0.1500 0.2500 -
B 0.0005 0.0030 -

Mechanical Properties of steel grade Grade 8.2

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)
976 (≥) 726 (≥) 14 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade Grade 8.2

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
41 - -     0.23 -  
797 584 - 13.3 412   -  
467 - 22 44.2   323 242

Heat Treatment of steel grade Grade 8.2

Heat treated : 1287°C - 1865°C

Technological Curves of steel grade Grade 8.2

Cross Reference Table (Equivalent Grade) of Grade 8.2

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