TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 44 - 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. Thermal treatment Softening annealing Quenching Tempering Heating to 830~860ºC for heat insulation and cooling slowly 1,020~1,040ºC quenching, oil cooling or air cooling 150~250ºC, twice tempering (Underlining tenacity) 500~530ºC, twice tempering (Underlining hardness) Quenching temperature and hardness relation curve Tempering temperature and hardness relation curve CCT curve Quenching temperature (HRC) 1,025ºC quenching 1,050ºC quenching Tempering temperature (HRC) Temperature/ºC Steel grade (TG D-2 (DIN-1.2379) COLD WORK STEEL