8418 tool steel Description: 8418 is a high quality thermal Sweden Assab development work die steel, which uses the latest production and refining technology, thereby making DIEVAR as the latest developments in steel casting molds and has excellent thermal fatigue turtle Kang cracking, thermal shock cracking, thermal wear, plastic deformation properties. These unique properties make it a casting, forging, hot extrusion die steel the best choice. Also: In the punching process, the mold must have a certain toughness. When punching thick sheet and strip, die punching edge can withstand high tensile stress, so they requested that the mold must have high toughness did not crack. The thicker the mold was higher toughness requirements workpiece thickness, then you must use high toughness and impact resistance of the mold material, but also must have good wear resistance to ensure reasonable economic production runs. Sweden Assab 8418 has the following characteristics: 1. excellent ductility and toughness combined isotropic 2. Excellent resistance to temper softening excellent high temperature strength properties 3. 4. 5. excellent hardenability excellent heat dimensional stability and plating performance purposes: zinc, magnesium, aluminum, titanium casting molds, hot extrusion dies (such as: mold Jen bush, ejector, bearing blocks, etc.), forging mold. Factory state: HB 160 hardening temperature: 1000 ~ 1030 ℃ tempering temperature: 200 300 400 Max hardness (HRC): 53 51 51 53 Chemical Composition (%): C: 0.35 Cr: 5.00 Mn: 0.75 Si: 1.00 Mo: 2.3 V: 0.80