Product Specification

3mm 304 Stainless Steel Spring Wire for Spring Making

Product Introduction

3mm 304 stainless steel spring wire is a round stainless steel wire designed for manufacturing springs and other formed elastic components.

Made from AISI 304 / SUS304 stainless steel, the wire combines the material characteristics of 304 stainless steel with a spring-wire condition suitable for spring forming processes.

TOPONE Wire supplies stainless steel spring wire in diameters from 0.15–12mm, including the 3mm size featured on this page. Bright and soap-coated surface options are available according to processing and forming requirements.

For spring manufacturers, wire selection should be based on the required diameter, stainless steel grade, mechanical condition, surface, spring design and forming process.

Product Parameters

304 Stainless Steel Spring Wire for Spring Manufacturing

304 stainless steel is an austenitic stainless steel grade commonly selected for applications requiring a combination of corrosion resistance, formability and mechanical performance.

When processed as spring wire, the material condition is adjusted through cold working and related wire-processing operations to meet the requirements of spring forming.

For a 3mm spring wire, the final spring performance depends not only on the stainless steel grade but also on wire condition, diameter, spring geometry and forming parameters.

Therefore, spring manufacturers should confirm the required mechanical properties and applicable standard before production.

Key Product Features

3mm Diameter for Industrial Spring Production

The nominal diameter of this product is 3mm, suitable for spring and wire-forming applications where this wire size matches the required spring dimensions and load conditions.

Other diameters from 0.15–12mm can be supplied for different spring designs and production requirements.

AISI 304 / SUS304 Material

304 stainless steel is widely used for general industrial applications where stainless steel corrosion resistance and austenitic material characteristics are required.

The final grade should be selected according to the working environment, temperature, chemical exposure and required mechanical properties.

Spring Wire Condition

Spring wire is supplied in a condition suitable for forming springs and elastic wire components.

For applications involving repeated loading, spring manufacturers should evaluate tensile strength, spring geometry, working stress and fatigue requirements together rather than relying on material grade alone.

Bright or Soap-Coated Surface

The wire can be supplied with a bright or soap-coated surface.

Surface selection should consider the spring-forming equipment, tooling, friction requirements and subsequent processing.

Coil or Spool Packaging

The wire can be supplied in coil or spool form according to production equipment and handling requirements.

Packaging specifications can be discussed according to wire diameter, coil weight and customer production requirements.

Applications

Compression Springs

3mm 304 stainless steel spring wire can be used for compression spring manufacturing when the selected wire condition and diameter meet the spring design requirements.

Extension Springs

The wire can also be processed into extension springs and other tension-loaded spring components.

Torsion Springs

For torsion spring production, the wire diameter and material condition should be evaluated together with the required torque, spring geometry and forming process.

Wire Forms

304 stainless steel spring wire can be used for selected wire-forming applications such as clips, hooks and formed wire components.

Industrial Hardware

The wire can be processed into various stainless steel spring and hardware components used in mechanical equipment, appliances and general industrial products.

How to Select 304 Stainless Steel Spring Wire

1. Confirm the Wire Diameter

Start with the required spring dimensions and select the appropriate wire diameter.

For this product, the nominal diameter is 3mm, while TOPONE Wire can supply diameters from 0.15–12mm.

2. Confirm the Stainless Steel Grade

304 is suitable for many general stainless steel spring applications. For more specific environments, the required grade should be evaluated based on corrosion exposure and operating conditions.

3. Define the Mechanical Requirement

Spring manufacturers should confirm the required tensile strength, hardness or other mechanical properties according to the spring design and applicable specification.

4. Select the Surface Condition

Bright and soap-coated surfaces can be considered according to spring-forming equipment, tooling and subsequent processing.

5. Confirm the Applicable Standard

ASTM A313 and other applicable specifications can be considered according to the target market and application. The exact standard and mechanical requirements should be confirmed before production.

Quality Control and Technical Documentation

For industrial spring wire, measurable specifications are more useful than general claims about quality or reliability.

Depending on order requirements, technical documentation may include:

• Stainless steel grade

• Wire diameter and tolerance

• Tensile strength

• Mechanical condition

• Surface condition

• Applicable material standard

• Material certificate

• Inspection information

• Packaging specification

These records can help purchasing and engineering teams verify whether the selected wire is appropriate for their spring manufacturing process.

Custom Stainless Steel Spring Wire

TOPONE Wire supplies stainless steel spring wire in different diameters, grades, surface conditions and packaging formats.

For a customized requirement, buyers can provide:

Grade + Diameter + Tensile Strength + Surface + Quantity + Application + Packaging

For example:

304 + 3mm + required tensile range + Bright/Soap Coated + Quantity + Spring Type

This information allows the wire specification to be evaluated according to the customer's spring-forming process and final application.

FAQ

What is 3mm 304 stainless steel spring wire used for?

It is primarily used for manufacturing compression springs, extension springs, torsion springs and selected wire-forming components.

What diameters are available?

TOPONE Wire supplies stainless steel spring wire from 0.15–12mm, including the 3mm diameter specified on this product page.

Is 304 stainless steel suitable for spring manufacturing?

304 stainless steel can be used for many spring applications. The suitability depends on the required spring design, mechanical properties, working environment and applicable material specification.

What surface options are available?

Bright and soap-coated surface options are available. The appropriate surface should be selected according to the spring-forming process and tooling requirements.