TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 82 - 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 850ºC for heat insulation; cooling to 650ºC at 10ºC/h for air cooling 980~1,000ºC 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 450~550ºC Quenching temperature and hardness relation curve Tempering temperature and hardness relation curve Austenite temperature: 1,000ºC, heat insulation for 30min CCT curve Temperature (ºC) Hardness (HRC) 1,000ºC quenching Steel grade (TGGP11) HOT WORK STEEL