Product Specification

304H Stainless Steel Spring Wire 0.15–12mm | Low-Friction Forming

Product Introduction

TOPONE 304H stainless steel spring wire is designed for manufacturers requiring stainless steel wire with controlled diameter, suitable surface condition, and mechanical properties for spring forming and wire-forming applications.

The standard product size range is 0.15–12mm, with 1.8mm available as a representative size. The wire can be supplied with a bright surface or soap-coated surface, depending on the customer's forming process and surface requirements.

304H is an austenitic stainless steel grade commonly selected for applications requiring corrosion resistance and high-strength wire after cold drawing. The final mechanical condition should be matched to the spring design, forming process, and required working load.

For purchasing specifications, buyers should confirm the grade, diameter, surface condition, applicable standard, mechanical requirements, quantity, and packaging before production.

Product Specifications

Surface Options

Bright Stainless Steel Surface

The bright surface is suitable when a clean wire appearance and smooth surface condition are required.

For spring manufacturers, surface selection should consider the wire-forming equipment, forming speed, tooling condition, and final product requirements.

Soap-Coated Surface

The soap-coated surface is intended for wire forming processes where controlled surface lubrication is required.

Compared with an untreated surface, the coating can provide a lubricating interface during forming. The suitable coating condition should be confirmed according to the customer's equipment and processing requirements.

Why Choose 304H Spring Wire?

1. Wide Diameter Range: 0.15–12mm

TOPONE supplies stainless steel spring wire from 0.15mm to 12mm, covering fine wire and larger industrial spring wire requirements.

The actual diameter should be selected according to spring geometry, load, deflection, forming equipment, and required mechanical properties.

2. 304H Stainless Steel Grade

304H provides an austenitic stainless steel material option for applications requiring corrosion resistance together with the mechanical properties associated with cold-drawn spring wire.

Material selection should be based on the actual working environment, temperature, load cycle, and corrosion exposure.

3. Bright or Soap-Coated Surface

Different forming processes require different surface conditions.

Bright and soap-coated options allow spring manufacturers to select a surface according to forming requirements, tooling, lubrication conditions, and finished-part appearance.

4. Controlled Diameter for Spring Manufacturing

For spring production, wire diameter directly affects the geometry and mechanical behavior of the finished spring.

Diameter tolerance should therefore be confirmed together with the spring drawing, applicable standard, or customer's technical specification rather than selecting wire only by nominal diameter.

5. Production Based on Defined Specifications

TOPONE can discuss production requirements based on:

• Material grade

• Wire diameter

• Surface condition

• Tensile strength

• Applicable standard

• Coil weight

• Packaging method

• Application requirements

This specification-based approach helps reduce misunderstandings between wire suppliers and spring manufacturers.

Applications

Compression Springs

304H stainless steel spring wire can be used for compression spring production where corrosion resistance and controlled spring-wire properties are required.

Typical applications include:

• Industrial equipment

• Mechanical assemblies

• Hardware components

• Valve and actuator components

Extension Springs

The wire can also be used for extension springs and other tension-loaded spring components.

The selected diameter and mechanical condition should correspond to the required load and working deflection.

Torsion Springs

For torsion spring production, wire diameter, tensile strength, surface condition, and forming parameters should be evaluated together.

Wire Forms

304H spring wire can also be processed into various wire-form components, clips, hooks, retaining parts, and formed stainless steel components.

Quality & Specification Control

For industrial spring wire, product quality should be evaluated through measurable specifications rather than general claims.

Relevant inspection and confirmation items can include:

• Chemical composition

• Wire diameter and tolerance

• Surface condition

• Tensile strength

• Mechanical properties

• Coil weight

• Packaging condition

• Applicable material standard

For each order, the required specification can be confirmed before production to match the customer's spring design and manufacturing process.

How to Select the Right 304H Spring Wire

Before ordering, spring manufacturers should confirm the following information:

Material

Is 304H suitable for the required corrosion environment and working temperature?

Diameter

Is the required wire diameter 1.8mm or another size within the 0.15–12mm range?

Mechanical Properties

What tensile strength, spring temper, or forming condition is required for the application?

Surface

Is a bright surface or soap-coated surface more suitable for the forming process?

Standard

Does the project require ASTM, AISI, DIN, EN, GB, JIS, or a customer-specific specification?

Packaging

Is coil, spool, pallet, or a specific coil weight required?

Providing these details before quotation helps the supplier match the wire specification to the actual production requirement.

FAQ

What sizes are available for 304H stainless steel spring wire?

TOPONE supplies 304H stainless steel spring wire in a diameter range of 0.15–12mm. The required diameter should be confirmed according to the spring design and applicable specification.

Is 1.8mm 304H stainless steel wire available?

Yes. 1.8mm is one of the representative sizes for this product series. Other diameters within the 0.15–12mm range can also be discussed according to production requirements.

What surface finishes are available?

The available surface options include bright and soap-coated finishes. The appropriate surface depends on the customer's forming process and tooling requirements.

Is 304H suitable for spring manufacturing?

304H can be used for stainless steel spring-wire applications where its material characteristics and the specified mechanical condition meet the requirements of the spring design.

What information should I provide when requesting a quotation?

For an accurate quotation, provide the grade, diameter, surface, required mechanical properties, quantity, applicable standard, and packaging requirements.

Ordering Information

For a 304H stainless steel spring wire inquiry, please provide:

Grade: 304H
Diameter: 0.15–12mm
Required Size: e.g. 1.8mm
Surface: Bright / Soap Coated
Quantity: Required order quantity
Standard: ASTM / AISI / DIN / EN / GB / JIS / Customer Specification
Packaging: Coil / Spool / Pallet
Application: Spring / Wire Form / Industrial Component