... 1MT Sichuan Liaofu Special Steel Trading Co., Ltd.Hot work die steelAISI 6F7/DIN 1.2767/GB 4CrNi4MoAISI 6F7 ... Hot Work Mould Steel Dimension:Forging round steel: Φ80mm~900mmForging flat ... 305mm)Sichuan Liaofu Special Steel Trading Co., Ltd.Hot work die steel 1, Grade: AISI 6F7/DIN 1.2767 ... : used for making heat-effecting die , cold work die, etc.