Description

CRNGO Electrical Steel Coil (Cold Rolled Non-Grain Oriented Steel) is a specialized silicon-iron alloy meticulously processed to deliver uniform magnetic performance across all planes of the sheet. Unlike grain-oriented alternatives (CRGO) that restrict magnetic flux to a single direction, CRNGO features a homogeneous, random grain structure. This multi-directional magnetic efficiency makes it an indispensable core material for components subject to rotating or dynamic magnetic fields.

Sourced by Metal Mart from leading global mills, our CRNGO coils undergo precise cold-reduction and high-temperature strand annealing. This process reduces the carbon content to microscopic levels, increases material resistivity, and controls the internal grain boundaries. The result is an electrical steel that dramatically limits core hysteresis and eddy current losses, paving the way for superior energy efficiency and reduced thermal heat generation in heavy industrial equipment.

Key Features:

• Isotropic Magnetic Performance: Guarantees uniform permeability and consistent magnetic induction regardless of the direction of the electrical flux.

• Low Specific Core Loss: Engineered to minimize parasitic energy dissipation, optimizing the operational efficiency of power-generation systems.

• Excellent Stamping Properties: Features a balanced hardness and punchability that allows for clean, automated stamping of high-volume rotor and stator laminations.

• Superior Insulating Surface Coating: Finished with thin, high-performance semi-organic or inorganic insulation coatings (such as C5 class) to stop inter-lamination short circuits.

Technical Specifications:

• Material Designation: CRNGO (Cold Rolled Non-Grain Oriented Electrical Steel)

• Standard Specifications: ASTM A677 / JIS G3141 / IEC 60404-8-4

• Common Industry Grades: M-15, M-19, M-22, M-36, up to M-47 series

• Thickness Ranges: Typically available in high-precision gauges of 0.35mm, 0.50mm, and 0.65mm.

• Sourcing Network: Directly imported from accredited mills in South Korea, Japan, China, and Germany.

• Quality Assurance: Dispatched with complete Mill Test Certificates (MTC) mapping verified magnetic flux density and watt loss metrics.

Common Applications:

• Industrial & EV Motors: Multi-phase induction motors, high-speed electric vehicle drivetrains, and dynamic servomotors.

• Power Generation: High-output AC alternators, hydro/wind turbine generators, and large rotating machinery.

• Appliances & Infrastructure: Compressor motors for commercial HVAC units, washing machine pumps, and refrigerator motors.

• Electromagnetic Equipment: Magnetic switches, lighting ballasts, relays, welding equipment, and small power transformers.

Through Metal Mart’s trusted trade brokerage and comprehensive Letter of Credit (LC) facilitation, we ensure that your manufacturing line receives fully certified, high-grade CRNGO inventory to satisfy the stringent requirements of modern industrial engineering.