SLH Pure Iron: How China’s High Purity Iron & Magnetic Materials Are Revolutionizing EV Motor Efficiency

As the global EV market races toward longer ranges and faster charging, the efficiency of electric motors has become a make-or-break factor. What many overlook is the critical role of core materials—and SLH Pure Iron, a leading China-based manufacturer, is reshaping the game with its High Purity Iron and specialized Magnetic Materials. For EV motors, where magnetic flux loss directly impacts energy waste, SLH’s solutions are proving to be a game-changer.

SLH’s High Purity Iron (Fe content ≥99.95%) addresses a key pain point: impurities like carbon, phosphorus, and sulfur disrupt magnetic field flow, increasing hysteresis and eddy current losses. By contrast, SLH’s High Purity Iron minimizes these impurities—carbon content as low as 0.003%, phosphorus/sulfur below 0.006%—creating a “smooth path” for magnetic flux. A leading Chinese EV maker tested SLH’s material against standard low carbon steel in its 250kW drive motor: the SLH-equipped motor achieved a core loss of just 0.3 W/kg at 200Hz, compared to 0.8 W/kg for the conventional option. This 62.5% reduction in loss translated to a 7% boost in motor efficiency, adding 58km to the vehicle’s NEDC range without increasing battery size.

Complementing its High Purity Iron, SLH’s Magnetic Materials—optimized for EV motor cores—offer exceptional saturation 磁感应强度 (Bs = 1.95T) and permeability (6,000 mH/m at 50Hz). This allows motor designers to downsize cores while maintaining power output: the same EV maker reduced its motor weight by 12kg (from 85kg to 73kg) using SLH’s Magnetic Material, freeing up space for additional battery cells.

As a China manufacturer, SLH brings unique advantages: a 50,000-ton annual production capacity ensures stable supply, while its proximity to EV hubs in Guangdong and Shanghai cuts lead times to 7–10 days (vs. 4–6 weeks for European suppliers). Moreover, SLH’s competitive pricing—30% lower than imported High Purity Iron—helps EV makers reduce costs without compromising quality. For global automakers looking to balance performance and affordability, SLH Pure Iron is emerging as a trusted partner in the EV revolution.

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