Product Specification

302 Stainless Steel Spring Wire for Reliable Spring Forming

Product Introduction

TOPONE supplies 302 stainless steel spring wire for compression, torsion, extension, and other formed spring applications.

AISI 302 stainless steel spring wire combines the characteristics required for stainless steel wire forming with the mechanical properties needed for spring manufacturing. The wire can be supplied in different diameters and surface conditions according to the intended spring design and production process.

The available stainless steel wire diameter range is 0.15–12mm. The product can be specified according to material grade, wire diameter, surface condition, tensile requirements, applicable standard, and spring application.

For spring manufacturing projects, the final wire specification should be selected according to spring geometry, forming process, required load, operating environment, and applicable technical standard.

Product Specifications

Why Choose 302 Stainless Steel Spring Wire?

AISI 302 is a commonly specified stainless steel grade for spring and wire-forming applications.

For spring production, material selection should consider wire diameter, required forming characteristics, spring geometry, working load, operating environment, and the applicable material standard.

The 5mm 302 stainless steel spring wire configuration shown on this page can be considered for larger wire spring applications where the spring design requires a relatively large wire diameter.

Wire Diameter Range

TOPONE provides stainless steel wire from 0.15mm to 12mm.

This range covers different spring manufacturing requirements, from fine-wire spring components to larger industrial spring applications.

For a specific spring design, the wire diameter should be determined together with:

• Spring outside diameter

• Spring inside diameter

• Mean coil diameter

• Free length

• Number of active coils

• Pitch

• Required load

• Working deflection

• Spring type

• Operating environment

Surface Options

Bright Surface

Bright stainless steel spring wire provides a clean metallic surface and can be selected when surface appearance and a defined wire surface condition are required.

Soap-Coated Surface

Soap-coated stainless steel wire provides a lubricated surface condition that can be suitable for certain wire-forming processes.

Surface selection should be matched to the forming equipment, tooling, and production requirements.

Spring Applications

Compression Springs

302 stainless steel spring wire can be used for compression springs designed to resist compressive loads.

The required wire diameter, coil diameter, free length, and number of coils should be determined according to the spring design.

Torsion Springs

For torsion springs, the wire specification should be considered together with the spring geometry, leg configuration, coil diameter, and required operating torque.

Extension Springs

302 stainless steel spring wire can also be used for extension springs where the wire is formed into coils with the required end configuration.

Industrial Spring Components

The wire can be used for customized spring components in industrial equipment, mechanical assemblies, and other applications where stainless steel spring wire is required.

Product Advantages

1. 302 Stainless Steel Grade

AISI 302 / SUS302 provides a defined stainless steel material option for spring manufacturing and wire-forming applications.

Material grade should be confirmed according to the required standard and application conditions.

2. 0.15–12mm Diameter Range

TOPONE supports stainless steel wire diameters from 0.15mm to 12mm, covering different spring sizes and wire-forming requirements.

3. 5mm Spring Wire Option

The product page features a 5mm 302 stainless steel spring wire specification for applications requiring larger spring wire.

The final diameter should be selected according to spring geometry and required mechanical performance.

4. Multiple Surface Conditions

Bright and soap-coated surface options are available for different forming and manufacturing processes.

5. Suitable for Different Spring Types

The wire can be specified for compression, torsion, extension, and other customized spring applications according to the spring design.

Spring Wire Selection Guide

Selecting the correct spring wire requires more than choosing the stainless steel grade.

Material Grade

Confirm whether 302 stainless steel meets the required corrosion resistance, forming characteristics, operating conditions, and applicable standard.

Wire Diameter

Select the wire diameter based on the required spring load, dimensions, deflection, and available installation space.

The available TOPONE diameter range is 0.15–12mm.

Spring Type

Identify whether the application requires a compression spring, extension spring, torsion spring, or another spring configuration.

Surface Condition

Select bright or soap-coated surface according to the forming process and tooling requirements.

Working Environment

Consider temperature, moisture, chemical exposure, load, movement, and installation conditions when selecting the material and spring wire specification.

Quality and Specification Control

For stainless steel spring wire, the final specification should be confirmed against the applicable material and dimensional standard.

Important control items may include:

• Stainless steel grade

• Chemical composition

• Wire diameter

• Diameter tolerance

• Surface condition

• Tensile strength

• Temper condition

• Applicable standard

• Coil or spool weight

• Packaging condition

For projects with specific mechanical requirements, the required tensile strength and other mechanical properties should be confirmed according to the selected diameter, temper, and applicable standard rather than using a single value for all sizes.

How to Specify 302 Stainless Steel Spring Wire

When requesting a quotation, buyers can provide the following information:

Material

AISI 302 / SUS302 or the required equivalent standard.

Wire Diameter

Specify the required diameter, such as 5mm, or another size within the 0.15–12mm range.

Spring Type

Specify compression, torsion, extension, or another spring configuration.

Surface

Specify bright, soap-coated, or another required surface condition.

Mechanical Requirements

Provide the required tensile strength, hardness, or spring performance requirements when applicable.

Standard

Specify JIS, ASTM, DIN, EN, GB, or another applicable standard.

Quantity

Provide the required order quantity and packaging preference.

FAQ

What material is this spring wire?

This product is AISI 302 / SUS302 stainless steel spring wire.

What is the available wire diameter range?

The available stainless steel wire diameter range is 0.15–12mm. The featured specification on this page is 5mm.

Can 302 spring wire be used for compression springs?

Yes. 302 stainless steel spring wire can be specified for compression spring applications when the material, diameter, temper, and spring geometry meet the design requirements.

Can it be used for torsion and extension springs?

Yes. 302 stainless steel spring wire can be used for torsion, extension, compression, and other formed spring applications according to the required spring design.

Is JIS standard available?

Yes. The product can be specified according to JIS or other applicable standards, subject to the required material and dimensional specifications.

What information is needed for a quotation?

Material grade, wire diameter, spring type, surface condition, standard, mechanical requirements, quantity, and packaging requirements are recommended.