Product Specification

304 Stainless Steel Spring Wire 0.15–12mm for Demanding Applications

Product Introduction

TOPONE 304 stainless steel spring wire is a cold-drawn round wire designed for spring manufacturing, wire forming and industrial components.

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.

For demanding spring applications, material grade, wire diameter, mechanical properties, surface condition and applicable standard should be considered together. The correct specification depends on the spring design, forming process and working environment.

The bright surface is suitable for applications where a clean metallic surface is required, while the soap-coated surface can provide a lubricated condition for certain cold-forming and spring-coiling processes.

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. A single mechanical value should not be applied to the complete 0.15–12mm range.

Why Choose 304 Stainless Steel Spring Wire?

AISI 304 / SUS 304 Material

304 stainless steel is an austenitic stainless steel grade commonly used for industrial wire, springs and formed-wire components.

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

0.15–12mm Diameter Range

TOPONE supplies 304 stainless steel spring wire from 0.15mm to 12mm, covering fine-diameter wire and larger wire sizes for different spring and wire-forming applications.

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

Bright and Soap-Coated Surface Options

The wire can be supplied with different surface conditions according to processing requirements.

Bright Surface

Bright stainless steel wire provides a clean metallic surface and can be considered for applications where surface condition and appearance are part of the product specification.

Soap-Coated Surface

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

Surface selection should be based on tooling, forming equipment, lubrication requirements and downstream processing.

Cold-Drawn Manufacturing Process

Cold drawing controls the wire diameter and mechanical condition through a controlled deformation process.

For spring manufacturing, the selected drawing condition should match the required tensile strength, hardness, spring temper and forming requirements.

Applications

Compression Springs

304 stainless steel spring wire can be used to manufacture compression springs for mechanical assemblies and industrial equipment.

Extension Springs

The wire can be formed into extension springs where the selected material grade and mechanical condition meet the required design specifications.

Torsion Springs

For torsion springs, wire diameter, spring temper, tensile properties and forming conditions should be evaluated together.

Industrial Wire Forms

304 stainless steel spring wire can also be used for clips, hooks, retaining components and other formed-wire parts.

Demanding Industrial Applications

For applications involving moisture, outdoor exposure or other demanding service conditions, the material grade and surface condition should be selected according to the actual working environment rather than relying only on the product name.

How to Select 304 Stainless Steel Spring Wire?

1. Confirm the Material Grade

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

2. Confirm the Wire Diameter

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

For precision spring production, the required diameter tolerance should also be specified.

3. Confirm Mechanical Properties

Tensile strength, hardness and spring temper can affect forming behavior and finished spring performance.

The required mechanical values should be confirmed according to the spring drawing, diameter and applicable standard.

4. Select the Surface Condition

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

5. Confirm the Spring Type

Specify whether the wire will be used for:

• Compression springs

• Extension springs

• Torsion springs

• Wire forms

• Retaining components

• Customized spring components

6. Check the Working Environment

Consider moisture, corrosion exposure, temperature and mechanical loading when selecting the material grade and wire condition.

Product Advantages

304 Stainless Steel Grade

AISI 304 / SUS 304 provides a commonly used stainless steel material option for spring and wire-forming applications.

Wide Diameter Selection

The 0.15–12mm range allows buyers to select different wire diameters according to spring dimensions and forming requirements.

Multiple Surface Conditions

Bright and soap-coated surfaces provide options for different appearance, forming and lubrication requirements.

Cold-Drawn Wire

The cold-drawn manufacturing process allows the wire diameter and mechanical condition to be controlled according to the specified product requirements.

Specification-Based Customization

Diameter, tolerance, surface condition, mechanical properties and packaging can be discussed according to the customer's technical specification.

Buyer Specification Checklist

Before ordering 304 stainless steel spring wire, buyers should confirm:

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 round wire made from AISI 304 / SUS 304 stainless steel 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. The appropriate surface should be selected according to the forming process, tooling and lubrication requirements.

Is 304 stainless steel spring wire suitable for heavy-duty applications?

It can be considered for demanding industrial spring applications when the material grade, wire diameter, mechanical properties, surface condition and applicable standard are properly matched to the working conditions.

What types of springs can be made from 304 wire?

Typical applications include compression springs, extension springs, torsion springs and various formed-wire components.

What standards can be followed?

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

What information should I provide for a quotation?

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