TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 14 - Descriptions and data in the file are typical cases. We will not make guarantee for them. Besides, we reserve the final right to interpret improvement in materials, quality and/or performance. Steel grade (TGM2B) Thermal treatment Softening annealing Quenching Tempering Heating to 860-880ºC for heat insulation; cooling to 550ºC slowly and then removing from the furnace 1,210~1,220ºC quenching, salt bath; Air cooling to room temperature after 500~600ºC level by level quenching Tempering temperature 540~560ºC; tempering for 3 times; material temperature shall reach the temperature interval; each time of heat insulation shall be not less than 1h; air cooling to room temperature Quenching temperature and hardness relation curve 1,210ºC quenching Tempering temperature and hardness relation curve CCT curve Quenching temperature (HRC) Quenching temperature (ºC) Tempering temperature (HRC) Tempering temperature (ºC) HIGH SPEED STEEL