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Description

C40 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: C40
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel C40
83Ni1
C22
1.0402
C25
1.0406
C30
1.0528
C35
1.0501
1.0511

Chemical composition(mass fraction)(wt.%) of the C40

 

C
Si
Mn
P
S
Cr Ni
0.37-0.44 0.40  0.50-0.80  0.045  0.045     
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
        Cr+Ni+Mo ≤ 0.63    
             

Mechanical Properties of steel grade C40

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)
124 (≥) 537 (≥) 14 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade C40

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
42 - -     0.22 -  
272 976 - 11.3 232   -  
428 - 43 22.2   312 311

Heat Treatment of steel grade C40

Heat treated : 1518°C - 1456°C

Technological Curves of steel grade C40

Cross Reference Table (Equivalent Grade) of C40

Grade Standard Country Application
OLC40 Structural steel
OLC40S Structural steel
OLC40X Structural steel
OLC40XS Structural steel
C40E Spain structural alloy steel
C40R Spain structural alloy steel
RC40 Austrian structural steel
EN C40E EN Euronorm Structural steel
EN C40R EN Euronorm Structural steel
EN C40 EN Euronorm Structural steel
EN C40D2 EN Euronorm Structural steel
EN C40 EN Euronorm Structural steel

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