TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 72 - 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 (TGGP13) Quenching temperature and hardness relation curve Tempering temperature and hardness relation curve Austenite temperature: 1,020ºC, heat insulation for 30min CCT curve Temperature (ºC) Thermal treatment Heating to 850ºC for heat insulation; cooling to 600ºC at 10ºC/h for air cooling 1,020~1,040ºC quenching; high speed gas quenching or hot oil cooling Selecting tempering temperature according to hardness requirements; please conduct tempering for 3 times; prevent tempering under 425~550ºC - HOT WORK STEEL