M15 Description: Density: 15.0g/cm3 Hardness: 90.5HRA bending strength: ≥ 1350N/mm2 Uses: Common drawing plastic mold, wearing parts, but also for cold roll, tungsten steel mold powder properties for silicon mainly required: low iron loss, which is the most important indicator silicon quality. Countries are divided into grades according to the value of iron loss, iron loss is lower, the higher grades. Strong magnetic field magnetic induction (magnetic induction) is high, which makes the motor and transformer core volume and weight is reduced, saving silicon, copper and insulation materials. Smooth surface and uniform thickness, the core of the fill factor can be improved. Punching is good, the manufacture of micro, small motors more important. The surface of the insulating film adhesion and good weldability, corrosion and can improve the punching resistance. Almost no magnetic aging. Typical electromagnetic properties are shown in Table.