Die Steel D7, Cr12Mo1V4

Description

Die Steel/Tool Steel/Mould Steel/Steel Cr*2Mo1V4, 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 **0%UT pass SEP***1 *4 c/c round *0~**0mm aisi D7, round, flat size:*0~**0mm, length ***0~***0mm 1. Steel grade: Cr*2Mo1V4, D7 2. Quality and standards: GB/T********0, AISI 3. Manufacturing process: EFS VD Forging annealing UT Surface treatment (grinding, Peeling, turning or milling) The manufacturing process provides that the material supplied according to these specifications has a high grade of structural homogeneity and thin grain size. 4. AISI D7 should be forged between **0 to ***0 C.After hot forging the material must be slowly cooled in the furnace and annealed. 5. Annealing Heat slowly and evenly to **0/**0C and then cool slowly in the furnace at *0~*0C per hour to **0C, remove from furnace and cool in still ***** hardness after annealing, **0BHN. 6. Ultrasonic testing Material must not show defects able to affect its application; defects checked at UT control (as SEP***1/*4) are not allowed if in class upper than: Cc - for diameters between *0 and **0 mm. 7. Reduction ratio The reduction ratio required is: min. 4:1 for forged bars 8. Other inspection Surface inspection: the remove of remain defects with slight abrasive grinding is acceptable. 9. Certification A certificate like EN ****4 3.1 including results of the controls listed at points: 4 (chemical analysis), 5, 6, 7, 8 and a declaration of conformity to the present TT, should be issued *0. Application The unique combination of high waer resistance and excellent toughness gives users the benefit of longer tool life in many tooling applications; blanking and forming, fine blanking, machine knives, thread rolling dies, rolls, deep drawing tools, piercing dies