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Description

SD345 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SD345
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel SD345
SNR400A
SNR400B
SNR490B
STKN400W
STKN400B
STKN490B
SR235
SR295
SD295A
SD295B

Chemical composition(mass fraction)(wt.%) of the SD345

 

 

C
Si
Mn
P
S
Cr Ni
0.27 0.55 1.6 0.04 0.04    
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other C+Mn/6  
        бs/mpa 345-440 ≤0.5  
             

Mechanical Properties of steel grade SD345

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)
698 (≥) 374 (≥) 43 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade SD345

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
21 - -     0.13 -  
932 454 - 13.3 141   -  
158 - 13 13.2   343 234

Heat Treatment of steel grade SD345

Heat treated : 1542°C - 1954°C

Technological Curves of steel grade SD345


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