TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

HEAT TREATMENT : Annealing: O Annealing temperature: 860-880 C, keep this temperature by 2-4 hours, then cooling to O O 600 C in the speed of less than 30 C/h. If after cold drawn precess, suggest add stress O relieving annealing process Under the temperature of 600-700 C, keep this temperature by 2 houres. Quenching & Tempering (salt bath) Quenching: Pre-heating in two steps: O O Heating temperature under : 400-500 C and 850-900 C O TG4241 austenitizing temperature : 1150-1180 C O O TG4241 austenitizing temperature : 1160 C-1190 C O Heating coefficient 10-15 sec/mm, quenching under 580-620 C, then cooling to room temperature. O Quenching temperature difference in 5-10 C between TGM2, TGM2A; TGM2A's quenching temperature is higher than TGM2 Tempering: O Tempering temperature under: 540-560 C, tempering 3 times, each time 1 hour, then cooling to room temperature. Steel Grade (TG 4241 / TG 4341) The Name You Can Trust www.tgkssl.com - 22 - 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. HIGH SPEED STEEL