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Description

LA-71 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: LA-71
Category Type Steel Grade Standard Country Application
Steel GradesMould Steel LA-71
Blue Max 309
Blue Max 309L
Blue Max 316L
Blue Max 347
L-50
L-53
L-56
L-60
L-61
L-70

Chemical composition(mass fraction)(wt.%) of the LA-71

C
Si
Mn
P
S
Cr Ni
0.06-0.19 0.35-0.75 0.9-1.4        
Mo Al Cu Nb Ti V Ce
        0.03-0.17    
N Co Pb B Other    
        AWS EM14K    
             

Mechanical Properties of steel grade LA-71

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)
821 (≥) 715 (≥) 42 43 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade LA-71

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
13 - -     0.43 -  
422 394 - 41.3 133   -  
726 - 21 43.2   434 111

Heat Treatment of steel grade LA-71

Heat treated : 1338°C - 1714°C

Technological Curves of steel grade LA-71


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