medium tensile bright steel bars in normalised condition
EN8,080M40,C40,1.0511.1040
Tol +0- 0.00629in
C Si Mn P S
0.35 0.05 0.50 0.06 0.06
0.40 0.35 0.90 X X

To Heat Treat harden at 830-860 c Quench in Oil .Temper between 550 – 660c
To give 40 – 55Tsi 620-850 N/mm2