... , motors, transformers, relays, transformer. Non-oriented silicon steel grade identification requirements: Gradeiron lossinduction50W600P15≤4.8B50≥1.6950W800P15≤ ... of coating A Baosteel, Wuhan Iron and Steel T4 coating, Nippon Steel L coating, coating A1 Sichuan considerable iron. ... punching resistance: burr height is 50um, the mold material: tool steel, dies: 10mm, Die Gap: 0.6mm, with pressing ...