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Description

SUM31L Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SUM31L
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SUM31L
SNCM220H
SNCM420H
SUM21
SUM22
SUM22L
SUM23
SUM23L
SUM24L
SUM25
SUM31

Chemical composition(mass fraction)(wt.%) of the SUM31L

 

C
Si
Mn
P
S
Cr Ni
0.14-0.2 0.1-0.35 1.0-1.3 0.04 0.08-0.13    
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
    0.1-0.35        
             

Mechanical Properties of steel grade SUM31L

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)
614 (≥) 823 (≥) 12 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade SUM31L

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 -  
761 344 - 42.3 113   -  
952 - 11 42.2   243 224

Heat Treatment of steel grade SUM31L

Heat treated : 1177°C - 1254°C

Technological Curves of steel grade SUM31L

Cross Reference Table (Equivalent Grade) of SUM31L

Grade Standard Country Application
SUM31L China China Taiwan Structural steel

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