Spring Steel Sheet or Plate

Your Professional Spring Steel Sheet Or Plate 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.

Why Choose Us

Production Capacity

Equipped with large-scale production facilities, we have an annual manufacturing capacity exceeding 6,000 metric tons.

24-Hour Online Service

We provide round-the-clock customer support with inquiry responses within 24 hours, including technical assistance and quotation services.

Global Supply Chain Network

Our products have earned widespread recognition and trust across more than 50 countries, including the United States, France, South Korea, Japan, India, Germany, and Spain, as well as key regions such as South Asia, Southeast Asia, and the Middle East.

Parameter

Item	Specification
Product Name	SUP9 Spring Steel Plate
Standard	JIS SUP9 / ASTM / DIN / GB
Thickness	0.3 mm – 60 mm (customizable)
Width	20 mm – 2000 mm (customizable)
Length	Coil or fixed length per request
Surface Finish	Black, pickled, polished, oiled, galvanized
Hardness (HRC)	40 – 55 (adjustable by heat treatment)
Tensile Strength	850 – 1000 MPa
Yield Strength	≥ 600 MPa
Elongation	≥ 10%
Certification	ISO 9001, SGS, BV, Mill Test Certificate

Benefits of Spring Steel Sheet Or Plate

It is low-alloy manganese, medium-carbon, or high-carbon steel with a high return quality and strength.

This type of steel is frequently useable for cinch picks, antennae, knife steel, and springs. Steel is a fantastic option for these applications due to its strength and returns quality. Additionally, the alloy is corrosion-resistant and non-magnetic. Precipitation has also hardened it. The material gains tensile strength akin to music wire due to this treatment. This material’s high carbon content makes it viable for uses that demand high tensile strength.

Useful to create hot-rolled roofing sheets and other architectural materials.
Spring steel sheet or plates are renowned for their dependability and great performance in various applications. They produce components for industrial equipment, air conditioners, and building supplies. Excellent toughness and elongation characteristics characterize them. They can be punched and laser-cut.

Useful for manufacturing antennas, cinch picks, washers, and saw blades.
Spring steel sheet or plate is employed for various tasks because of its springy and elastic qualities. It is frequently employed in producing washers, cinch picks, antennas, saw blades, and numerous other items. It is a well-liked material for various purposes since it is strong, resistant to water and other factors, and can be cut to size.

Processing Steps Of Spring Steel Sheet Or Plates

Raw Material Selection and Preparation: The base ingredients of steel are chosen before beginning any of the processing steps. The base low alloy steel is usually scrap steel, while additional ingredients are chosen as needed depending on the desired alloy.

Alloying: The base metal and alloying ingredients are heated past their melting point to create molten steel within the EAF. Here, the base steel and alloying elements such as silicon, manganese, or chromium are combined at a chemical level.

Continuous Casting and Hot Rolling into Strips or Rods: The steel is fed through continuous casting roller mills, which form the spring steel as it cools. This process draws the steel into long strips, rods, or plates, depending on the desired end product.

Application of Spring Steel Sheet Or Plate

Automotive Springs

Ideal for leaf springs, coil springs, and shock‑absorber parts, offering high strength and excellent elasticity for long-lasting vehicle performance.

Heavy Machinery Components

Used in construction and agricultural machines, SUP9 steel resists heavy loads and repeated stress while maintaining toughness and durability.

Agricultural Tools

Perfect for blades, tines, and cutting tools that face shocks and wear, combining hardness with reliable fatigue resistance.

Precision & Wear-Resistant Parts

Suitable for washers, fasteners, knives, and other tools requiring strength, elasticity, and long-term wear resistance.

Additional Information

Shipping	We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.
Terms Of Payment	We usually accept T/T, L/C, Paypal, Credit card, etc. If you prefer other payments terms, please feel free to discuss with us.

Certificate

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FAQ

Q: How long does spring steel last?

A: On average, these springs last about five years, based on the industry standard. Spring wire can be increased by several sizes, and you can purchase extra long-life springs that will last for over 100,000 cycles. Here is spring's life expectancy on average: Standard Cycle Springs: 10,000 cycles.

Q: Will spring steel rust?

A: Susceptibility to Corrosion: Unlike stainless steel, carbon steel springs are prone to rust and corrosion, especially in humid or corrosive environments. Proper coatings or plating may be necessary to enhance their corrosion resistance and ensure their longevity in challenging conditions.

Q: Does heat affect spring steel?

A: Exposure to extreme temperatures can affect the material properties of the spring. High temperatures can cause the metal to soften, while low temperatures can make it brittle.

As one of the most experienced spring steel sheet or plate manufacturers in China, we also support customized service. Please rest assured to buy cheap spring steel sheet or plate for sale here from our factory. If you have any enquiry about pricelist and free sample, please feel free to email us.