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LR Type 320

England Lloyds LRType320 Carbon-manganese steel forgings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LRType320 / LR Type 320
Category Grade Standard Region/Area Standard Content
Metals LR Type 320 -- England Carbon-manganese steel forgings

Chemical composition(mass fraction)(wt.%) of the LR Type 320

Element Min Max Similar
Total others - 0.8500 -
Ni - 0.4000 -
Mo - 0.1500 -
Cr - 0.3000 -
Cu - 0.3000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.3000 1.5000 -
Si - 0.4500 -
C - 0.6500 -
Total others - 0.8500 -
Ni - 0.4000 -
Mo - 0.1500 -
Cr - 0.3000 -
Cu - 0.3000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.3000 1.5000 -
Si - 0.4500 -
C - 0.6500 -
Total others - 0.8500 -
Ni - 0.4000 -
Mo - 0.1500 -
Cr - 0.3000 -
Cu - 0.3000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.3000 1.5000 -
Si - 0.4500 -
C - 0.2300 -
Total others - 0.8000 -
Mo - 0.1500 -
Ni - 0.4000 -
Cr - 0.3000 -
Cu - 0.3000 -
P - 0.0400 -
S - 0.0400 -
Mn 0.5000 1.6000 -
Si - 0.6000 -
C - 0.4000 -
Si - 0.4500 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.1500 -
Mn 0.3000 1.5000 -
Cu - 0.3000 -
Cr - 0.3000 -
C - 0.2300 -

Mechanical Properties of steel grade LR Type 320

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)
728 (≥) 828 (≥) 24 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade LR Type 320

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 - -     0.42 -  
767 596 - 24.3 324   -  
277 - 44 34.2   124 122

Heat Treatment of steel grade LR Type 320

Heat treated : 1464°C - 1472°C

Technological Curves of steel grade LR Type 320

Cross Reference Table (Equivalent Grade) of LR Type 320

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