It is a type of steel supplied in the delivery condition “hardened”.
Find the most diverse applications hardened and tempered in the construction of mechanical parts subject to torsion – fatigue, dynamic stresses such as shafts, bolts, gears, bolsters stressed, molds grains

  The technical sheets are indicative

Physical and process characteristics
Supply Quenched and Tempered
Shape Rounds up to Ø 1.000 Thickness up to 300
Brinell Hardness HB 250 ÷ 285
Resistance R = Kg / mm2 85 ÷ 95

 

BC39