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Description

L-70 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: L-70
Category Type Steel Grade Standard Country Application
Steel GradesMould Steel L-70
Blue Max 308L
Blue Max 309
Blue Max 309L
Blue Max 316L
Blue Max 347
L-50
L-53
L-56
L-60
L-61

Chemical composition(mass fraction)(wt.%) of the L-70

C
Si
Mn
P
S
Cr Ni
0.07-0.17 0.2 0.65-1.0        
Mo Al Cu Nb Ti V Ce
0.45-0.65            
N Co Pb B Other    
        AWS EA1    
             

Mechanical Properties of steel grade L-70

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)
872 (≥) 228 (≥) 41 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade L-70

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
44 - -     0.12 -  
361 481 - 12.3 232   -  
892 - 24 42.2   313 412

Heat Treatment of steel grade L-70

Heat treated : 1258°C - 1631°C

Technological Curves of steel grade L-70


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