Ultra-High-Strength Alloy Steel Becomes the Main Standard (Core Upgrade of Steel Leaf Springs)
1800–2000MPa grade high-strength steel leaf springs are being commercially available on a large scale. Fangda Special Steel and Xingcheng Special Steel will begin mass production in 2026. Combined with composite high-strength shot peening technology, surface compressive stress reaches -800MPa, directly increasing fatigue life by 40%, reducing weight by 15% under the same load capacity, and allowing for 100% steel recycling. Suitable for heavy-duty trucks and trailers, perfectly meeting the stringent requirements of the new GB/T national standard for spring steel.
Third-Generation 2200MPa Niobium-Ti Microalloyed High-Strength Spring Steel (NbTi) for New Energy Vehicles
Developed specifically for new energy heavy-duty trucks and electric dump trucks, it will complete vehicle testing in 2026. A single suspension system will be 25kg lighter, and the energy consumption per 100km for electric vehicles will decrease by 4.7%. This solves the problem of excessive suspension load caused by the increased weight of electric vehicle batteries and is the preferred material for high-end leaf springs selected by OEMs in 2026.
Breakthrough in Vanadium-Free, Low-Cost, High-Stress Spring Steel Technology (Cost-Reducing Blockbuster Technology)
A Hubei-based company, in collaboration with universities, has achieved a vanadium-free formula and super-vanadium strength and toughness through precise micro-grain control during heat treatment, without adding the precious metal vanadium. This doubles the fatigue life under extreme road conditions and significantly reduces the raw material cost of high-end leaf springs. It will be recognized as a provincial-level high-quality technology in 2026 and will replace imported high-vanadium spring steel in batches.
Import Substitution of Corrosion-Resistant Special Spring Steel
Xingcheng Special Steel’s 2000MPa corrosion-resistant spring steel has passed the certification of overseas suspension giants, with a 20% improvement in resistance to salt spray and de-icing agent corrosion, solving the problem of early corrosion and fracture of leaf springs in northern winters and coastal areas, and breaking the long-term monopoly of foreign steel in China’s steel industry.
Post time: Jul-24-2026
