- Main material of automobile suspension spring: 60Si2Mn / 55CrSi / 50CrVA
- High fatigue life – the core requirement of a car
Raw materials are high in purity, low in impurities and uniformly organized
The fatigue resistance is much higher than ordinary spring steel.
Advantages: One million times repeated without cracking, collapse, or permanent deformation, meeting the long-lasting quality warranty of the whole vehicle - High elastic limits and resistance to slack
Design of alloying of silicon, chromium and vanadium
Advantages: It does not soften and decrease under long-term load, the suspension height does not collapse, and the steering is stable. - Resistant to shock and turbulence
Good resilience and high strength
Advantages: Overpasses the pit, slowdown belt, cracks continuously when heavy loads, and is not brittle, ensuring driving safety - Good heat treatment performance
Strong hardness and uniform hardness
Advantages: high uniformity in high-volume production, symmetrical performance of the left and right springs of the entire vehicle
II. Engine valve spring: 50CrVA / 55CrSi - heat-resistant
Raw material’s high temperature mechanical properties are stable
Advantages: The engine’s elasticity does not decline and continues to crack under high temperature conditions, ensuring that the gas distribution mechanism is reliable. - Ultra-high fatigue resistance
High frequency repeated exercise (thousands of beats / minutes)
Advantages: No early failure, no resonance rupture, longer engine life - High dimensional accuracy
The material has a small diameter tolerance and good surface quality
Advantages: suitable for high-precision valve springs, good sealing and low noise
III. Corrosion / chassis environment: spring steel + surface treatment + stainless steel spring - Strong corrosion resistance
Raw materials + coatings suitable for chassis in harsh environments (dirt, salt mist, low temperatures)
Advantages: Does not rust, does not corrode and fail, northern snowmelt agents and coastal high salt mist environment are more durable - Good weather tolerance
Material composition suitable for high-temperature cycle
Advantages: – 40 ° C to 120 ° C range performance is stable, all climate car pressure free
IV. Looking at the overall advantages of automobile springs from raw materials
Safe and secure
The strength, toughness and fatigue properties of raw materials ensure safe driving, braking and steering from the source.
Prolonged quality assurance
Meet the 3 / 6 / 10 year warranty requirements for the car, with fewer faults, fewer recalls, and fewer Claims.
Both steering and comfort
The material elasticity and stiffness are stable, the suspension is well supported, and comfort and handling are improved at the same time.
The potential for lightweighting is great
High-strength alloy spring steel can achieve the same carrying power with a finer diameter, reducing weight and saving fuel.
Compatible with high volume production
The raw materials have high dimensional accuracy and stable performance, suitable for the industrialization of automobiles and high consistent manufacturing.
Costs are manageable
The material performance matches the model positioning, high-end materials are used for high-end cars, and economical cars have the best value for money.
