The 50W470 non-grain-oriented silicon steel coil is an electrical-grade material engineered for rotating machines that must convert energy efficiently. Zhengde supplies this 0.5 mm grade with a guaranteed maximum core loss of 4.70 W/kg at 1.5 T and 50 Hz, measured on Epstein frames for every production batch, together with a high magnetic polarization that helps motor designers shrink stator and rotor packages.

The strip carries a C-5 semi-organic insulation coating on both sides, and slit edges are deburred below 0.03 mm so high-speed lamination presses do not damage the coating. A tight thickness profile keeps stacking factors high and motor noise low. The grade is documented to GB/T 2521.1 and IEC 60404-8-4, and full magnetic test certificates support motor efficiency validation programs.

• Low Core Loss — Guaranteed maximum 4.70 W/kg at 1.5 T/50 Hz reduces iron losses and operating temperature in continuous-duty machines.
• High Magnetic Polarization — Strong B50 values allow compact stator and rotor designs with fewer turns for the same torque output.
• Precision Thickness Profile — Uniform 0.5 mm gauge with low wedge keeps stacking factor high and motor noise low.
• Burr-Controlled Slitting — Edges are slit and deburred to protect inter-lamination insulation during high-speed punching.
• Stable Insulation Coating — C-5 semi-organic coating withstands stamping and annealing cycles while maintaining interlamination resistance.
• Energy Efficiency Support — Material data supports IE4 and IE5 motor efficiency programs and EV traction machine development.

50W470 non-oriented electrical steel is used for rotating machines where efficiency and quiet operation matter: IE3 and IE4 industrial motors, EV traction motors, electric compressor motors, generators, wind turbine pitch motors, servo motors, and small power transformers.

Stamping shops use the coil directly on high-speed presses for stator and rotor laminations, and the grade is a common choice for energy efficiency upgrade projects.

Magnetic properties are verified on Epstein frames for every production batch, and chemical analysis follows GB/T 2521.1. Zhengde is ISO 9001:2015 certified and can provide EN 10204 3.1 documentation, with SGS inspection available on request.

Coils are packaged with moisture-barrier wrapping and edge protection for sea freight. Delivery is 7–15 days for stock widths and 20–30 days for production.