C35 steel is a medium carbon, medium tensile steel supplied as-forged or normalized condition.This steel shows excellent forgeability, reasonable strength, toughness and wear resistance. C35 is easily welded with the correct procedure.Due to the carbon content preheating and postheating are required.It has good Machinability after full annealing.Wide range of mechanical properties can be attained by quenching and tempering,as quenched hardness should be approximately 45 HRC
1.C35 steel Supply Form & Size
|Form of Supply||Size(mm)||Length(mm)|
|Square bar||100 x 100-600×600||3000-6000|
|Flat bar/Blcoks||Thickness :120-800||2000-6000|
|Surface Finish||Black-Forged||Black-Rolled||Turned||Grinding||Polished||Peeled||Cold Drawn|
|Tolerance||(0，+5mm)||(0，+1mm)||(0，+3mm)||Best h9||Best h11||Best H11||Best H11|
3.Chemical Composition&Related Specifications
|C35/1.0501||0.32-0.39||≤ 0.4||0.50-0.80||≤ 0.045||≤ 0.045|
|Diameter d mm||≤ 16||16-40||40-100|
|Thickness t mm||< 8||8-20||20-60|
|Yield Strength Mpa||≥430||≥380||≥320|
|Tensile Strength Mpa||630-780||600-750||550-700|
|Reduction of area ,%||≥40||≥45||≥50|
5.C35 steel Forging
Forging temperature:950-1200℃,air cooling after forging.
Full annealing is carried out from 840-890ºC, followed by furnace cooling at 28ºC per hour, to 650ºC soaking and air cooling.
The normalizing temperature range for this grade is typically 860-900ºC,followed by cooling in still air.
Hardening of C35 steel is carried out from an austenitizing temperature of 830-860ºC,followed by oil or water quenching.
Tempering after normal hardening and oil or water quenching is carried out at 550-680ºC to give the required mechanical properties as determined by practical experience.
C35 steel is one of the most widely used for machinery parts,and used for forged parts where the strength and toughness of the material are appropriate.The following are the major applications of C35 carbon steel: