TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 66 - 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. 0 Tempering C HRC 0 500 C HRC56 0 550 C HRC54 0 600 C HRC50 HEAT TREATMENT CONDITION : Quenching temperature Cooling Medium Tempering temperature Tempering times Tempering Hardness O : 1020-1050 C : air-cooling O : 550-650 C : 2Times, the tempering temperature in the second time should be lower than in first time : 47-48HRC. Steel grade (TG H-13 DIN-1.2344) (TG H-13M DIN-1.2345) HOT WORK STEEL