Product Specification

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

Product Introduction

TOPONE 304H stainless steel spring wire is designed for spring manufacturing and wire-forming applications requiring a defined stainless steel grade, controlled wire diameter and suitable mechanical condition.

The available diameter range is 0.15–12mm, covering fine and medium-diameter spring wire applications. The featured product uses AISI 304H stainless steel and can be supplied with a bright or soap-coated surface according to the customer's forming and processing requirements.

304H wire can be considered for compression, extension, torsion and other formed spring components when the material grade, wire diameter and mechanical properties match the finished spring design.

For technical purchasing, the recommended specification includes material grade, diameter, tolerance, surface condition, mechanical requirements, applicable standard and coil dimensions.

Product Specifications

Why Choose 304H Stainless Steel Spring Wire?

304H is an austenitic stainless steel grade that can be used for selected spring-wire applications where stainless steel properties and the required mechanical condition are appropriate for the application.

For spring manufacturing, the material grade should not be selected independently from the wire diameter and forming process.

Important selection factors include:

• Spring type

• Wire diameter

• Diameter tolerance

• Material grade

• Tensile strength

• Surface condition

• Forming method

• Working temperature

• Corrosion exposure

The final specification should be based on the spring drawing, applicable material standard and actual operating conditions.

0.15–12mm Diameter Range

TOPONE 304H stainless steel spring wire is available in diameters from 0.15mm to 12mm.

The required diameter should be selected according to the spring design rather than simply the finished spring's outside diameter.

For technical inquiries, customers should provide the nominal wire diameter and required tolerance. For precision spring production, a drawing or existing wire specification can be used to confirm the dimensional requirement.

Surface Options

Bright Stainless Steel Wire

Bright wire can be selected for applications where a clean metallic surface is required.

The surface condition should be evaluated together with the spring-forming process, tooling and finished component requirements.

Soap-Coated Stainless Steel Wire

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

The appropriate coating condition should be matched to the customer's forming equipment and downstream processing.

Application Fields

Compression Springs

304H stainless steel spring wire can be used for selected compression spring applications where the specified grade, diameter and mechanical condition meet the spring design requirements.

Important design factors include wire diameter, spring index, coil diameter, free length and required load.

Extension Springs

The wire can be used for extension spring production when the material condition is suitable for the required forming process.

Hook design and forming method should be considered when defining the wire specification.

Torsion Springs

For torsion springs, wire diameter and mechanical condition need to be matched with the forming equipment and finished spring geometry.

The appropriate specification should be determined from the spring design and applicable material requirements.

Wire Forms

304H spring wire can also be considered for selected formed wire components requiring stainless steel material and controlled wire dimensions.

Product Advantages

304H Stainless Steel Grade

The 304H grade provides a defined material option for spring and wire-forming applications. The actual suitability depends on the working environment, mechanical requirements and applicable specification.

0.15–12mm Diameter Options

The 0.15–12mm range covers fine wire through larger spring-wire applications, allowing diameter selection according to the finished component design.

Bright and Soap-Coated Surfaces

Both bright and soap-coated surface conditions can be supplied according to forming and downstream processing requirements.

Coil Inner Diameter Options

Coil inner diameters from 250–1000mm can be specified according to production and wire-feeding requirements.

Cold Drawn Processing

Cold drawing is used to control the wire diameter and develop the required mechanical condition. The final properties depend on material grade, drawing process and product specification.

Customized Technical Specifications

Material grade, diameter, tolerance, surface, mechanical requirements, coil dimensions and packaging can be discussed according to the customer's technical requirements.

How to Select 304H Stainless Steel Spring Wire

1. Confirm the Spring Type

Identify whether the wire will be used for compression, extension, torsion or another type of spring.

2. Define the Wire Diameter

The wire diameter should be selected according to the spring design and forming process.

3. Confirm the Material Grade

Specify AISI 304H or the required equivalent material designation according to the applicable standard.

4. Define Mechanical Requirements

Where required, specify tensile strength, hardness, elongation or other mechanical properties according to the relevant standard.

5. Select the Surface Condition

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

6. Confirm Coil Dimensions

Coil inner diameter and packaging should be matched with the customer's spring-forming equipment and handling requirements.

Quality Control Points

For stainless steel spring wire, quality should be evaluated through measurable specifications rather than general descriptions.

Recommended inspection items include:

• Material grade

• Chemical composition

• Wire diameter

• Diameter tolerance

• Tensile strength

• Mechanical condition

• Surface condition

• Coil inner diameter

• Coil weight

• Applicable standard

For repeat production, keeping the same agreed material grade, diameter tolerance and mechanical specification provides a clear technical reference for subsequent orders.

FAQ

What diameter range is available for 304H stainless steel spring wire?

The available diameter range is 0.15–12mm. The actual diameter should be selected according to the spring design and applicable dimensional requirements.

What surface options are available?

Bright and soap-coated surfaces are available according to the customer's forming and processing requirements.

Is 304H suitable for spring manufacturing?

304H can be used for selected stainless steel spring applications when the material grade, diameter and mechanical condition meet the requirements of the finished spring.

What types of springs can use 304H wire?

Depending on the specification and mechanical condition, the wire can be considered for compression springs, extension springs, torsion springs and selected formed wire components.

What is the coil inner diameter?

The listed coil inner diameter range is 250–1000mm, subject to the production and packaging specification.

What information should be provided for a quotation?

Provide the material grade, wire diameter, tolerance, surface condition, mechanical requirements, spring application, applicable standard, quantity and packaging requirements.