C28Mn

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Chemical composition %   of   steel   C28Mn 
Cr + Mo + Ni = max 0.63
C Si Mn Ni P S Cr Mo
0.25 - 0.32 max   0.4 1.3 - 1.65 max   0.4 max   0.03 max   0.035 max   0.4 max   0.1


Mechanical properties of   steel   C28Mn 

Nominal thickness (mm):   to 16 16 - 100 100 - 250 250 - 500 500 - 1000
Rm - Tensile strength (MPa) (+N) 630 600 570 540 540


Nominal thickness(mm):   to 16 16 - 100 100 - 250 250 - 500 500 - 1000
Re - Upper yield strength or 
Rp0.2 - 0.2% proof strength (MPa) (+N)
345 310 290 270 260


KV - Impact energy (J) (+QT) +20°
40


Nominal thickness (mm):     to 16 16 - 100 100 - 250
A - Min. elongation Lo = 5,65 √ So (%) (+N) 17 18 18


  Brinell hardness   (HBW):   (+S) 255
  Brinell hardness   (HBW):   (+A) 223



C28Mn