Material must not show defects able to affect its application defects checked at UT control (as SEP1921/84) are not allowed if in class upper than: Cc – for diameters between 50 and 200 mm. Heat slowly and evenly to 830/860☌ and then cool slowly in the furnace at 10~20☌ per hour to 600☌,remove from furnace and cool in still air.Maximum hardness after annealing,260BHN. The manufacturing process provides that the material supplied according to these specifications has a high grade of structural homogeneity and thin grain size.ĥ.AISI D7 should be forged between 950 to 1100 ☌.After hot forging the material must be slowly cooled in the furnace and annealed.
Quality and standards: GB/T1299-2000,AISIĮFS+VD+Forging+annealing+UT+Surface treatment (grinding, Peeling, turning or milling) Die Steel/Tool Steel/Mould Steel/Steel Cr12Mo1V4, D7 die steel, tool steel, mould steel, steel, alloy tool steel, alloy steel, mold steel, forged steel, alloy steel bar, bar, forged steel bar, round steel bar, roll steel, tool and die steel, steel round bar, round bar, steel bar, d7 100%UT pass SEP1921 84 c/c