Driven by China's "dual carbon" goals, the home appliance industry is accelerating its transformation toward greener, more efficient operations. As the "heart" of household appliances, the electric motor's critical raw material—non-oriented electrical steel—directly impacts motor energy efficiency, operational stability, and ultimately the competitiveness of the entire appliance.

Current Home Appliance Market: Massive Scale with Continuously Upgrading Energy Efficiency Standards

In 2025, China's home appliance industry achieved a cumulative main business revenue of 1.97 trillion RMB. Annual production of household washing machines, refrigerators, and air conditioners reached 101.078 million units, 89.959 million units, and 230.344 million units, respectively [9†L16-L17&0†L5-L7]. Although industry growth has slowed, the massive stock market's upgrade and replacement demand continues to be released—replacement demand for air conditioners, refrigerators, and washing machines is expected to exceed 90 million units.

Concurrently, motor energy efficiency standards are continuously being raised. GB 18613-2020 "Minimum allowable values of energy efficiency and energy efficiency grades for motors" was officially implemented in 2021, fully replacing the older version. The National Development and Reform Commission and other departments have clearly stated that by 2025, the proportion of high-efficiency and energy-saving products among major household appliances in use should increase by 10 percentage points. Starting in 2024, the energy efficiency levels of key energy-using product equipment covering the home appliance sector are classified into three tiers: access, energy-saving, and advanced, with a dynamic transformation mechanism in place. National energy efficiency standards for general-purpose equipment have been comprehensively tightened, with 113 relevant national standards issued by the end of 2025.

The implementation of this series of policies means that non-oriented electrical steel with lower core loss and higher magnetic flux density has become a crucial strategic choice for home appliance motor manufacturers to build core product competitiveness.

Non-Oriented Electrical Steel: The Core Material for Home Appliance Motors

What is Non-Oriented Electrical Steel?

Non-oriented electrical steel is a high-performance silicon-iron alloy processed through specialized rolling and annealing treatments. Its grain structure is randomly distributed in all directions, resulting in uniform magnetic properties across all orientations. This characteristic aligns perfectly with the constantly changing rotating magnetic fields inside home appliance motors, making non-oriented electrical steel the preferred material for the iron cores of home appliance motors such as air conditioner compressors, refrigerator compressors, and washing machine motors.

Why Choose Non-Oriented Electrical Steel?

• Low Core Loss, Directly Reducing Energy Consumption: Core loss is a key indicator for evaluating silicon steel sheet quality. Lower core loss means less energy loss during motor operation, less heat generation, and higher efficiency.

• High Magnetic Flux Density, Enabling Miniaturization: High magnetic flux density allows home appliance manufacturers to achieve higher torque output from the same volume of motor iron core. This is a critical enabler behind the trend toward "smaller size, higher power" in variable-frequency appliances (such as inverter air conditioners and inverter refrigerators).

• Good Processability: Excellent stamping performance meets the demands of high-speed precision stamping for mass production. Insulating coatings effectively suppress eddy current losses and provide rust protection.

Consequently, non-oriented silicon steel is widely used in home appliance motors, high-efficiency industrial motors, inverter air conditioner compressors, wind turbine generators, and various energy-saving home appliance motors.

Typical Application Scenarios and Material Selection Recommendations for Home Appliance Motors

• 50WW470 (Mid-Grade): Suitable for applications demanding higher energy efficiency, such as inverter air conditioner compressors and high-efficiency washing machine motors. Its lower core loss significantly reduces overall appliance energy consumption, meeting the increasingly stringent requirements of new home appliance energy efficiency standards.

• 50WW600 (Mid-Low Grade): Balances cost and performance. Suitable for fixed-speed motors in compressor-type applications and some small appliance motors. It is the most widely used economical grade.

• 50WW800 and 1300 (Low Grade): Cost-optimized solutions. Suitable for exhaust fans, some kitchen appliance motors, and small motors with less stringent energy efficiency requirements.

New Technical Trends: Thinner Gauges and High-Frequency Adaptability

With the accelerating penetration of variable frequency drive technology and smart appliances, the operating frequencies of home appliance motors have significantly increased, imposing new demands on non-oriented electrical steel:

• Thinner Gauges: Moving from conventional 0.5mm and 0.35mm towards ultra-thin gauges like 0.20mm to suppress eddy current losses under medium-to-high frequency operating conditions, thereby enhancing the motor's ultimate energy efficiency.

• High-Frequency Adaptability: At high frequencies, core loss increases exponentially—inverter compressors and high-efficiency appliance drive motors need specially optimized intermediate-frequency grade electrical steel products.

• Growing Demand for Low Core Loss, High-Grade Products: Demand for electrical steel grades with higher performance and lower core loss continues to rise in high-end home appliances and variable-frequency drive products.

These trends will drive a new wave of material upgrades in the home appliance motor industry.

Material Selection Summary

Home appliance manufacturers need to strike a comprehensive balance between product energy efficiency positioning, target energy efficiency grades, electromagnetic design requirements, and material costs when selecting materials. The general rule is:

• High-efficiency positioning products (e.g., first-tier energy efficiency inverter air conditioners, high-end appliances exported to Europe and the US) should prioritize 50WW470 and higher grades.

• Products balancing cost and performance can choose 50WW600 to remain competitive under current standards.

• For low-power motors or small appliances with less demanding efficiency requirements, 50WW800 and 1300 series still offer practical value.

From air conditioner compressors to washing machine motors, from fixed-speed to inverter drives, non-oriented electrical steel consistently stands at the center of the appliance energy-saving revolution. Facing continuously evolving energy efficiency regulations and the deepening adoption of variable frequency technology, more precise scenario-based material selection and more efficient grade configuration are unavoidable challenges for every home appliance motor manufacturer striving for competitive efficiency. They also serve as a solid guarantee for providing global consumers with lower-energy-consuming and better-performing home appliance products.

Shanghai Ruichao Industrial Co., Ltd.: Your Professional Partner for Electrical Steel Material Selection

Shanghai Ruichao Industrial Co., Ltd. has specialized in supplying non-oriented and grain-oriented electrical steel for over a decade, covering a full range of non-oriented grades including 50WW470, 50WW600, 50WW800, and 50WW1300, as well as high magnetic flux density, low core loss grain-oriented electrical steel. We provide stable and reliable material solutions for manufacturers of home appliance motors, compressors, and various high-efficiency energy-saving equipment.

We Offer You:

• Stable Supply: Long-term strategic partnerships with major domestic steel mills like Baowu Group, ensuring product quality and supply security.

• Precision Processing: Advanced slitting and leveling production lines, capable of customizing dimensions according to your iron core design requirements.

• Technical Support: Professional team providing grade selection recommendations, performance comparison analysis, and processing protection guidance.

• Agile Delivery: Flexible batch supply and inventory solutions, effectively reducing your capital tie-up.