EN8D – BRIGHT BAR Equivalent grades: 
Internal Standard
BS
DIN
IS
EN
SAE/AISI
EN8D
080A40
CK45
45C8
EN8D
1040, 1045
EN8D – BRIGHT BAR Chemical composition: 
The following table shows the chemical composition of EN8D steel:
Element
C
Mn
P
S
Content (%)
0.40-0.45
0.70-0.90
0.045 Max
0.045 Max
EN8D – BRIGHT BAR Mechanical Properties: 
Grade
Tensile Strength (Mpa)
Yield Strength (Mpa)
Elongation in 100-150 mm(%)
Reduction in Area
Hardness
En8D
≥380
≥210
≥25
≥50
≤111HB