TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 76 - 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 (TGE23) Thermal treatment Softening annealing Quenching Tempering 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 450~550ºC Quenching temperature and hardness relation curve 1,025ºC quenching Tempering temperature and hardness relation curve Austenite temperature: 1,025ºC, heat insulation for 30min CCT curve HOT WORK STEEL