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LR 2.25Cr1Mo

England B.S. LR2.25Cr1Mo Specification for 1% chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LR2.25Cr1Mo / LR 2.25Cr1Mo
Category Grade Standard Region/Area Standard Content
Metals LR 2.25Cr1Mo BS S 158 England Specification for 1% chromium-molybdenum steel bars for the manufacture of forged bolts and forged nuts

Chemical composition(mass fraction)(wt.%) of the LR 2.25Cr1Mo

Element Min Max Similar

Mechanical Properties of steel grade LR 2.25Cr1Mo

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)
727 (≥) 849 (≥) 21 33 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade LR 2.25Cr1Mo

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 - -     0.33 -  
132 484 - 43.3 234   -  
835 - 24 41.2   124 134

Heat Treatment of steel grade LR 2.25Cr1Mo

Heat treated : 1838°C - 1236°C

Technological Curves of steel grade LR 2.25Cr1Mo

Cross Reference Table (Equivalent Grade) of LR 2.25Cr1Mo

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