Product Specification

304 Stainless Steel Spring Wire 0.15–12mm for Easy Forming

Product Introduction

TOPONE 304 stainless steel spring wire is a cold-drawn stainless steel wire designed for spring manufacturing and wire forming applications.

Made from AISI 304 / SUS 304 stainless steel, the wire is available in a 0.15–12mm diameter range with bright or soap-coated surface options.

The appropriate wire specification can be selected according to spring design, forming equipment, mechanical requirements and working conditions.

The soap-coated surface provides a lubricated surface condition that can be considered for spring coiling and other cold-forming processes where additional surface lubrication is required.

For technical purchasing, buyers should confirm the material grade, wire diameter, surface condition, mechanical properties, applicable standard and packaging requirements before production.

Product Specifications

Technical Note: Tensile strength, hardness, dimensional tolerance and other mechanical properties should be confirmed according to the selected diameter, spring design and applicable standard rather than using one fixed value for the complete 0.15–12mm range.

Why Choose 304 Stainless Steel Spring Wire?

AISI 304 Stainless Steel Material

AISI 304 / SUS 304 is a commonly used austenitic stainless steel grade for industrial wire and spring applications.

Material selection should consider the actual service environment, corrosion exposure, forming requirements, operating temperature and required mechanical properties.

0.15–12mm Diameter Range

The available diameter range is 0.15–12mm, covering fine stainless steel spring wire and larger wire sizes for industrial spring and wire-forming applications.

The required diameter should be selected according to the spring drawing, load requirements, coil geometry and forming equipment.

Bright or Soap-Coated Surface

Two surface conditions can be selected according to different processing requirements.

Bright Surface

Bright stainless steel wire provides a clean metallic surface and can be used where surface appearance and subsequent processing requirements need to be considered.

Soap-Coated Surface

Soap-coated stainless steel spring wire provides a lubricated surface condition that can be suitable for certain cold forming and spring coiling operations.

Surface selection should be based on the customer's tooling, forming process, lubrication requirements and downstream processing.

Applications

Compression Springs

304 stainless steel spring wire can be used for compression spring manufacturing where the specified material grade and mechanical condition meet the spring design requirements.

Extension Springs

The wire can be used for extension springs in industrial equipment, mechanical assemblies and general hardware applications.

Torsion Springs

For torsion spring production, wire diameter, tensile strength, spring temper and forming process should be considered together.

Wire Forms

304 stainless steel spring wire can also be processed into retaining rings, clips, hooks and other formed-wire components according to the required design.

How to Select the Right 304 Spring Wire?

1. Confirm Material Grade

Specify AISI 304 / SUS 304 or the required equivalent material designation.

2. Confirm Wire Diameter

Specify the required diameter within the 0.15–12mm range and provide the required dimensional tolerance when necessary.

3. Confirm Mechanical Properties

For spring applications, tensile strength, hardness and spring temper can affect forming and finished spring performance.

The required values should be confirmed according to the spring drawing or applicable technical standard.

4. Select Surface Condition

Choose bright or soap-coated wire according to the forming equipment, tooling and lubrication requirements.

5. Confirm Spring Type

Specify whether the material will be used for:

• Compression springs

• Extension springs

• Torsion springs

• Wire forms

• Retaining components

• Customized spring components

Buyer Specification Checklist

For a technical inquiry, buyers can provide the following information:

Providing these specifications helps define the required stainless steel spring wire more accurately and reduces ambiguity during technical quotation and production.

FAQ

What is 304 stainless steel spring wire?

304 stainless steel spring wire is a cold-drawn stainless steel wire made from AISI 304 / SUS 304 and used for spring manufacturing and wire forming.

What is the diameter range?

TOPONE supplies this product range from 0.15mm to 12mm. The exact diameter and tolerance should be confirmed according to the spring design and applicable specification.

What surface options are available?

The main surface options are bright and soap coated. Soap-coated wire can be considered when the spring-forming process requires a lubricated surface condition.

What springs can be made from 304 stainless steel wire?

The wire can be used for compression springs, extension springs, torsion springs and various formed-wire components, subject to the required mechanical properties and application conditions.

What standards can be followed?

The wire can be supplied according to applicable ASTM, AISI, DIN, EN, GB, JIS or customer specifications. The applicable mechanical specification should be confirmed before production.

What information should I provide for a quotation?

Provide the material grade, diameter, surface, mechanical requirements, spring type, applicable standard, quantity and packaging requirements. A technical drawing is recommended for precision spring applications.