Cgoodsaws specializes in providing high-performance steel strips for demanding spring and elastic component applications. These applications require materials with exceptionalelastic limit, fatigue resistance, stress relaxation resistance, and long-term service stability.
We offer targeted material solutions for springs operating under various conditions:
1. Recommended Core Material Series
A. High-Carbon Spring Steel Strip Series
- Typical Grades: C67S (CK67), C75S (CK75), C80S (CK80), C85S, C90S, C95S.
- Features & Applications:
- Through hardening and tempering, these grades achieve excellent elasticity and strength.
- C67S-C75S: Offer a great balance, widely used for rolling shutter door springs, various medium-duty mechanical springs, and clamps.
- C80S-C95S: Can achieve higher hardness and elastic limits, suitable for high-stress, compact precision springs such as valve springs and high-load clutch diaphragm springs.
B. High-Performance Alloy Spring Steel Strip Series
- Typical Grades: 51CrV4 (6150/SAE 6150), 50CrV4, 60Si2Mn, 75Cr1.
- Features & Applications:
- The addition of Cr (Chromium), V (Vanadium), Si (Silicon), Mn (Manganese) enhances overall performance.
- Higher Hardenability: Ensures uniform properties even in thicker cross-sections.
- Superior Toughness & Impact Fatigue Resistance, especially under dynamic loading.
- Better Resistance to Tempering Softening, suitable for a wider operating temperature range.
- Ideal for critical, high dynamic-load applications such as automotive suspension springs, safety-critical springs with high fatigue life requirements, vital mechanical valve springs, and impact tool springs.
C. Stainless Spring Steel Strip Series
- Typical Grades: SUS301, SUS304, AISI 420J2 (3Cr13).
- Features & Applications:
- Provide good spring properties along with excellent corrosion and rust resistance.
- SUS301: Can achieve very high strength through heavy cold rolling, used for precision electronic contacts, connectors, and medical device springs.
- AISI 420J2 (3Cr13): Can be hardened via heat treatment, used for medium-to-high stress springs and elastic components requiring corrosion resistance.
2. Critical Strip Properties for Spring Manufacturing (How Cgoodsaws Ensures Quality)
- Strict Performance Uniformity: Minimal variation in hardness and elastic modulus within a coil and between batches, ensuring consistent spring production and high yield rates.
- Superior Foundation for Fatigue Life:
- High Purity: Strict control of inclusions to reduce fatigue crack initiation sites.
- Excellent Surface Quality: Control of decarburization, scratches, pits, and other surface defects, significantly improving the fatigue endurance limit of springs.
- Precise Dimensional and Shape Tolerances:
- Tight Thickness & Width Tolerances: Ensure precision in coiling or stamping processes.
- Excellent Flatness & Camber Control: Prevent issues like twisting and uneven stress during spring forming.
- Professional Edge Treatment:
- Rounded Edges: Effectively prevent micro-cracks at the strip edge from initiating early fatigue failure during spring coiling, which is crucial for high-stress helical springs.
3. Why Spring Manufacturers Choose Cgoodsaws
- Material Expertise: We supply not just steel, but possess deep knowledge of the performance limits and heat treatment windows of different materials in spring applications.
- Problem-Solving Focus: Leveraging over 20 years of experience, we assist customers in analyzing and solving common spring issues such as premature fracture, loss of force, and rapid relaxation, offering improvement solutions from the material root cause.
- Customization Support: We can recommend the most cost-effective material grade, hardness range, surface, and edge treatment based on your spring design (e.g., stress level, fatigue life requirements, operating environment).
- Reliable Supply Chain: Low minimum order quantities and guaranteed lead times provide a solid foundation for your production planning.
In summary: Choosing Cgoodsaws’ high-stress spring steel strips means equipping your spring products with durable and reliable “muscle and bone.” Let us work together to optimize the material solution based on your specific application parameters.