Product Specification

304 Stainless Steel Spring Wire 0.15–12mm for Precision Springs

Product Introduction

TOPONE 304 stainless steel spring wire is designed for spring manufacturers and industrial component producers requiring stainless steel wire for precision spring forming.

The wire is manufactured from AISI 304 / SUS 304 stainless steel and is available in a diameter range of 0.15–12mm. Bright and soap-coated surface options can be selected according to the customer's forming process and surface requirements.

304 stainless steel spring wire can be used for compression springs, extension springs, torsion springs and other formed wire components. The appropriate wire diameter, mechanical condition and surface should be selected according to the spring design, forming equipment and working conditions.

For technical orders, customers can specify the material grade, diameter, surface condition, required mechanical properties, applicable standard, quantity and packaging.

Product Specifications

Why 304 Stainless Steel Spring Wire?

1. 304 Stainless Steel Grade

AISI 304 is an austenitic stainless steel grade widely used for industrial wire and spring applications.

For spring production, the material should be selected according to corrosion exposure, forming requirements, operating temperature and required mechanical properties.

2. 0.15–12mm Diameter Range

TOPONE supplies 304 stainless steel spring wire from 0.15mm to 12mm.

This range covers fine spring wire as well as larger wire sizes used for industrial spring and wire-forming applications.

The actual diameter should be determined according to spring geometry, load requirements, forming equipment and applicable technical specifications.

3. Bright and Soap-Coated Surfaces

Different spring-forming processes may require different surface conditions.

Bright surface is suitable where a clean metallic surface and finished appearance are required.

Soap-coated surface provides a lubricated surface condition that can be considered for wire forming and spring coiling processes.

The appropriate surface should be selected according to tooling, forming speed, lubrication requirements and finished-part specifications.

4. Suitable for Different Spring Designs

304 stainless steel spring wire can be used to manufacture:

• Compression springs

• Extension springs

• Torsion springs

• Wire-form springs

• Retaining springs

• Customized formed-wire components

The required mechanical condition should be matched to the specific spring design and working load.

Applications

Compression Springs

304 stainless steel spring wire can be used for compression spring manufacturing in mechanical assemblies and industrial equipment.

Typical specification factors include wire diameter, spring diameter, free length, number of coils and required spring force.

Extension Springs

For extension springs, the selected wire condition should correspond to the required tensile load, working extension and spring geometry.

Torsion Springs

304 spring wire can also be formed into torsion springs where the wire is subjected primarily to twisting during operation.

Spring geometry, wire diameter and mechanical properties should be evaluated together during material selection.

Precision Wire Forms

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

Surface Selection Guide

Surface selection should be confirmed with the actual production process rather than based only on appearance.

Spring Wire Selection Guide

When selecting 304 stainless steel spring wire, buyers should confirm the following parameters:

Material Grade

Confirm whether AISI 304 / SUS 304 meets the corrosion and temperature requirements of the application.

Wire Diameter

Specify the required diameter within the 0.15–12mm range.

Mechanical Properties

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

The required values should be confirmed according to the spring drawing, applicable standard or customer's technical specification.

Surface Condition

Select bright or soap-coated surface according to the forming equipment and lubrication requirements.

Spring Type

Identify whether the wire will be used for compression, extension, torsion or another wire-forming application.

Standard

Specify the applicable ASTM, AISI, DIN, EN, GB, JIS or customer-specific standard.

Quality & Specification Control

For precision spring wire, quality should be evaluated through measurable specifications.

Relevant inspection items may include:

• Material grade

• Chemical composition

• Wire diameter

• Diameter tolerance

• Surface condition

• Tensile strength

• Hardness or mechanical condition

• Coil dimensions

• Packaging condition

• Material traceability

For projects with strict dimensional requirements, the customer's technical drawing and applicable material standard should be used as the primary reference.

Customized Supply

TOPONE can discuss customized spring wire requirements based on:

• Material grade

• Wire diameter

• Surface condition

• Mechanical properties

• Coil weight

• Packaging

• Applicable standard

• Application

For customized orders, providing the required specification before production helps establish a clear technical basis for manufacturing and inspection.

FAQ

What is the diameter range of 304 stainless steel spring wire?

The standard product range is 0.15–12mm. Specific diameters should be confirmed according to the required spring design and production specification.

What types of springs can be manufactured from 304 spring wire?

304 stainless steel spring wire can be used for compression springs, extension springs, torsion springs and various formed-wire components.

What surface finishes are available?

The main options are bright and soap-coated surfaces. The suitable surface depends on the forming process and final application.

Is 304 stainless steel suitable for precision springs?

304 stainless steel can be considered for precision spring applications when its material characteristics and mechanical condition meet the requirements of the spring design and working environment.

What information is needed for a quotation?

Please provide the material grade, wire diameter, surface, mechanical requirements, spring type, quantity, standard and packaging requirements. A spring drawing is recommended for projects with specific dimensional requirements.

Buyer Specification Checklist

For a technical quotation, provide:

Grade: AISI 304 / SUS 304
Diameter: 0.15–12mm
Surface: Bright / Soap Coated
Spring Type: Compression / Extension / Torsion / Wire Form
Mechanical Requirement: Tensile Strength / Hardness / Spring Temper
Standard: ASTM / AISI / DIN / EN / GB / JIS
Quantity: Required Quantity
Packaging: Coil / Spool / Customized
Drawing: Recommended for precision spring applications