Your Professional Spring Steel Bar Supplier
Jiangsu Cunrui Metal Products Co., Ltd. was established on March 24, 2016. It is a modern enterprise specializing in the production and export of high-quality metal pipes.
Our company is a significant manufacturer of high-quality metal materials in China. Our product range includes stainless steel, carbon steel, alloy steel, silicon steel, etc., which are widely used in the medical, food, construction and other industries.
Parameter
|
Parameter |
Specification |
|
Material Grade |
55SiMnVB Alloy Spring Steel |
|
Standards |
ASTM, DIN, EN, JIS equivalents |
|
Available Shapes |
Round Bar, Square Bar, Flat Bar, Rod |
|
Size Range |
Diameter: 8mm – 300mm; Thickness: 5mm – 80mm; Length: 1m – 12m (customized) |
|
Surface Finish |
Black, Bright, Polished, Peeled, Turned, Ground |
|
Heat Treatment |
Annealed, Quenched & Tempered, Normalized |
|
Hardness (HRC) |
Annealed: 180–220 HB; After Heat Treatment: 45 – 55 HRC |
|
Tensile Strength (MPa) |
900 – 1250 |
|
Yield Strength (MPa) |
600 – 850 |
|
Elongation (%) |
≥ 10 |
|
Impact Toughness |
≥ 25 J (depending on heat treatment and thickness) |
|
Modulus of Elasticity |
205 – 210 GPa |
|
Density |
7.85 g/cm³ |
Customization Services
Processing Options
Cutting, bending, drilling, machining, and welding.
Surface Treatments
Polishing, shot blasting, oiling, and protective coatings.
OEM/ODM Production
Fully customizable according to your drawings and special requirements.
Flexible MOQ
We accommodate both small and large orders to support your business needs.
Benefits of Spring Steel Bar
High Yield Strength
One of the most notable characteristics of spring steel bars is their high yield strength. This property allows the bars to endure substantial stress without permanent deformation. Yield strength is critical in applications where the material is subjected to heavy loads, as it ensures the structural integrity of the component over time. Spring steel bars can maintain their shape and function even under extreme stress, making them indispensable in high-load scenarios.
Excellent Fatigue Resistance
Fatigue resistance refers to the ability of a material to withstand repeated loading and unloading cycles without experiencing failure. Spring steel bars excel in this regard, offering exceptional durability over time. This makes them ideal for applications that involve continuous or cyclic loading, such as automotive suspension systems and industrial machinery. The superior fatigue resistance of spring steel bars ensures long-term reliability and reduces the need for frequent maintenance or replacement.
Elasticity
Elasticity is the ability of a material to return to its original shape after being deformed by external forces. Spring steel bars exhibit remarkable elasticity, which is crucial for applications where flexibility and resilience are required. This property allows the bars to absorb energy and dissipate it without undergoing permanent deformation. In practical terms, this means that spring steel bars can be bent, twisted, or compressed and still return to their original shape, ensuring consistent performance and longevity.
Corrosion Resistance
Depending on the specific alloy composition, spring steel bars can offer significant resistance to corrosion. This property is particularly important in environments where the material is exposed to moisture, chemicals, or other corrosive elements. Enhanced corrosion resistance extends the lifespan of the bars and maintains their mechanical properties even in harsh conditions. This makes spring steel bars suitable for outdoor applications or industries that operate in challenging environments.
Application of Spring Steel Bar
Automotive Industry
Suspension Systems: Spring steel bars are a critical component in automotive suspension systems. They provide the necessary resilience and flexibility to absorb shocks and maintain vehicle stability, ensuring a smooth ride even on uneven terrain. The high yield strength and fatigue resistance of spring steel bars allow them to withstand the continuous stress and strains experienced during driving.
Clutches and Valve Springs: In the engine, spring steel bars are used to manufacture clutches and valve springs. These components require precise performance under high-stress conditions. The elasticity and durability of spring steel ensure reliable operation over extended periods, contributing to the overall efficiency and longevity of the engine.
Construction Industry
Reinforcing Bars (Rebars): Spring steel bars are used as reinforcing bars in concrete structures to enhance their tensile strength and durability. The bars help to distribute loads evenly, prevent cracking, and improve the structural integrity of buildings, bridges, and other infrastructures. Their resistance to deformation under heavy loads makes them ideal for reinforcing concrete structures subjected to dynamic forces.
Structural Components: In addition to reinforcing concrete, spring steel bars are also used in various structural components, such as beams, columns, and frames. Their ability to maintain structural stability under heavy loads and resist deformation contributes to the overall safety and durability of construction projects.
Agricultural Equipment
Machinery and Tools: Agricultural equipment often operates in harsh conditions, requiring materials that can withstand heavy use and exposure to the elements. Spring steel bars are used to manufacture critical components of agricultural machinery and tools, such as plow blades, harrows, and cultivators. Their hardness, toughness, and resistance to wear ensure that the equipment remains functional and efficient, reducing downtime and maintenance costs.
Industrial Machinery
Tools and Dies: In industrial manufacturing, spring steel bars are used to produce tools and dies that require high precision and durability. These tools must maintain their shape and sharpness under repeated use and high stress. The hardness and toughness of spring steel bars make them ideal for cutting, stamping, and forming applications, where maintaining dimensional accuracy is crucial.
Heavy-Duty Springs: Industrial machinery often relies on heavy-duty springs to absorb shocks, maintain tension, and provide consistent performance. Spring steel bars are used to create springs that can withstand high loads and repeated cycling without losing their mechanical properties. This ensures the reliability and longevity of the machinery.
Shipping
We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.
We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.
Customers will receive a tracking number once the package has been shipped, so they can track the status of their delivery.
We strive to ship all orders within 2 business days of receiving the payment.
In case of any delays or issues with shipping, our customer service team will promptly communicate with the customer to resolve the problem.
In case of any delays or issues with shipping, our customer service team will promptly communicate with the customer to resolve the problem.
Certificate
FAQ
As one of the most experienced spring steel bar manufacturers in China, we also support customized service. Please rest assured to buy cheap spring steel bar for sale here from our factory. If you have any enquiry about pricelist and free sample, please feel free to email us.
