Product Specification

201/304/316L Stainless Steel Spring Wire for Spring Forming

Product Introduction

TOPONE stainless steel spring wire is available in 201, 304 and 316L grades for compression springs, extension springs, torsion springs and other formed-wire applications.

The current diameter range is 0.15–12mm, covering fine stainless steel wire and larger spring-wire sizes. The wire can be specified according to material grade, diameter, mechanical condition and surface requirements.

For spring manufacturing, selecting wire by diameter alone is not sufficient. The stainless steel grade, mechanical condition, surface finish, spring geometry and working environment should be considered together.

Product Parameters

Exact tensile strength, hardness, dimensional tolerance and surface condition should be confirmed according to the selected grade, diameter and spring specification.

201, 304 and 316L Spring Wire Selection

Different stainless steel grades should be selected according to the actual spring application rather than treated as interchangeable materials.

201 Stainless Steel Spring Wire

201 stainless steel can be considered for selected spring and formed-wire applications where the required corrosion resistance and mechanical characteristics are compatible with the working environment.

304 Stainless Steel Spring Wire

304 stainless steel is widely used for general stainless steel spring and wire-forming applications. It can be considered where a combination of corrosion resistance and forming characteristics is required.

316L Stainless Steel Spring Wire

316L stainless steel can be considered for spring applications exposed to more demanding corrosion conditions. Its suitability should be evaluated according to the actual environment, forming process and required mechanical properties.

0.15–12mm Stainless Steel Spring Wire

TOPONE stainless steel spring wire is available in diameters from 0.15–12mm.

The required diameter should be selected according to the spring drawing and forming process. Key considerations include:

• Spring outside or inside diameter

• Wire diameter tolerance

• Number of active coils

• Required spring load

• Forming equipment

• Wire feeding method

• Mechanical condition

• Final operating environment

For fine-wire springs, dimensional control and surface condition can be particularly important during automated forming. For larger wire sizes, the forming equipment and mechanical condition should be evaluated together with the diameter.

Bright Stainless Steel Spring Wire

Bright stainless steel wire provides a clean metallic surface and can be selected when surface appearance and wire condition are important to the application.

For spring production, surface selection should also be considered together with:

• Wire feeding

• Tooling contact

• Lubrication

• Forming speed

• Final appearance

• Subsequent finishing process

Where the forming process requires additional lubrication, a soap-coated surface may also be considered according to the specific wire specification.

Applications

Compression Springs

Stainless steel spring wire can be used for compression springs where the selected grade and mechanical condition meet the requirements of the spring design and service environment.

Extension Springs

For extension springs, wire selection should be evaluated together with spring geometry, forming requirements and operating conditions.

Torsion Springs

201, 304 or 316L wire can be considered for torsion spring production according to the required material properties and corrosion environment.

Precision Wire Forms

The wire can also be processed into clips, hooks, retaining components and other formed-wire products.

Industrial Components

Stainless steel spring wire can be used for industrial, appliance, hardware and other components where a defined stainless steel material is required.

Product Advantages

Three Grade Options

TOPONE provides 201, 304 and 316L stainless steel spring wire, allowing manufacturers to select the material according to the application environment and technical requirements.

0.15–12mm Diameter Range

The 0.15–12mm range covers fine and larger spring-wire requirements for different spring designs and forming processes.

Bright Surface

The bright surface option provides a clean metallic finish and can be selected according to processing and final-product requirements.

Application-Based Specification

Diameter, material grade, mechanical condition and surface can be specified together to match different spring-forming processes.

Multiple Standards

The wire can be specified according to applicable AISI, ASTM, DIN, EN, GB or JIS requirements.

How to Select Stainless Steel Spring Wire

1. Confirm the Material Grade

Select 201, 304 or 316L according to corrosion exposure, mechanical requirements and the intended application.

2. Confirm the Wire Diameter

The wire diameter should be determined from the spring drawing, finished dimensions and forming process.

3. Define the Mechanical Condition

Tensile strength and hardness should be confirmed according to the forming equipment and finished spring requirements.

4. Select the Surface Condition

Bright or soap-coated wire can be considered according to tooling, lubrication and wire-feeding requirements.

5. Check the Working Environment

For springs exposed to moisture, salt, chemicals or other corrosive conditions, the selected grade should be evaluated against the actual service environment.

FAQ

What grades are available for this stainless steel spring wire?

TOPONE supplies this product range in 201, 304 and 316L stainless steel grades.

What diameter range is available?

The current stainless steel wire range is 0.15–12mm.

Is 304 stainless steel suitable for spring manufacturing?

304 stainless steel can be considered for many general spring and formed-wire applications when its material and mechanical properties meet the required conditions.

When should 316L spring wire be considered?

316L can be considered when the spring is exposed to more demanding corrosion conditions and the required mechanical and forming characteristics are compatible with the application.

Can 201 stainless steel be used for springs?

201 can be considered for selected spring applications where its corrosion resistance, mechanical condition and forming characteristics are suitable for the intended environment.

What surface options are available?

The referenced product focuses on bright stainless steel wire. Soap-coated surface can also be evaluated when the forming process requires a lubricated wire surface.