TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 86 - 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 (1.2367 SUP) Thermal treatment Softening annealing Quenching Tempering Heating to 820~840ºC for heat insulation; cooling to 600ºC at 10ºC/h for air cooling 1,030~1,060ºC 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 CCT curve Tempering temperature Tempering temperature /HRC Quenching temperature/ºC Hardness/HRC HOT WORK STEEL