0.8mm 302 Stainless Steel Spring Wire for Precision Spring Forming

Product Introduction

0.8mm 302 Stainless Steel Spring Wire is an austenitic stainless steel wire designed for spring manufacturing, wire forming and industrial components.

Manufactured from AISI 302 / SUS302 stainless steel, the wire is available in a nominal 0.8mm diameter, with a broader diameter range of 0.15–12mm. Bright and soap-coated surface options are available according to forming equipment and processing requirements.

AISI 302 is commonly selected for stainless steel spring applications where the combination of stainless steel characteristics and cold-worked mechanical properties is required. The wire can be processed into compression springs, extension springs, torsion springs and other formed-wire components.

For engineering applications, the appropriate wire should be selected according to material grade, diameter, tensile strength, surface condition, spring design and operating environment rather than diameter alone.

Product Specifications

Why Choose AISI 302 Stainless Steel Spring Wire?

AISI 302 Stainless Steel Grade

AISI 302 is an austenitic stainless steel grade commonly used for spring wire and formed-wire applications. Its cold-working characteristics make it suitable for applications where the wire needs to be formed into springs or other components.

The final wire condition should be selected according to the required mechanical properties and spring design.

0.8mm Diameter for Spring Manufacturing

The nominal diameter of this product is 0.8mm, with a complete available diameter range of 0.15–12mm.

Wire diameter directly affects spring geometry, coil dimensions and forming parameters. When specifying spring wire, buyers should consider the required spring diameter, working load, deflection, forming process and equipment.

Bright and Soap-Coated Surface Options

Different surface conditions can be selected according to the customer's manufacturing process.

Bright surface is suitable when a clean metallic surface and controlled surface appearance are required.

Soap-coated surface can be considered for spring forming processes where the surface condition needs to match automatic coiling equipment and tooling requirements.

The suitable surface should be confirmed according to the actual forming process.

Applications

Compression Springs

302 stainless steel spring wire can be used for compression spring manufacturing in mechanical equipment, industrial assemblies and other formed-wire components.

The wire diameter and mechanical condition should be selected according to the spring's load, deflection and dimensional requirements.

Extension Springs

The wire can be formed into extension springs where the spring design requires suitable tensile and forming characteristics.

Important selection parameters include wire diameter, spring geometry, working load and required operating cycles.

Torsion Springs

302 spring wire can also be used for torsion springs and other components subjected to rotational loading.

For these applications, spring geometry, torque requirements and forming conditions should be considered when selecting the wire specification.

Wire Forms and Hardware Components

Beyond conventional springs, 302 stainless steel wire can be processed into:

• Clips

• Hooks

• Retaining components

• Wire forms

• Fasteners

• Small industrial components

Product Advantages

Stainless Steel for Spring Applications

AISI 302 provides a commonly used stainless steel option for spring and formed-wire applications requiring stainless steel characteristics and cold-worked mechanical properties.

Wide Diameter Selection

The available diameter range of 0.15–12mm allows the same product category to cover fine wire, precision spring wire and larger industrial spring applications.

Multiple Surface Conditions

Bright and soap-coated surfaces provide different options for downstream forming and production processes.

International Standard Options

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

Quality and Compliance Documentation

The product is associated with ISO9001 quality management certification, while RoHS-related documentation can be provided according to project requirements.

Certification should be understood as part of the quality management and compliance system; the actual wire specification still needs to be confirmed against the customer's technical requirements.

Quality Control and Inspection

For stainless steel spring wire, product quality should be evaluated using measurable technical parameters rather than appearance alone.

Depending on the order requirements, inspection may include:

• Chemical composition verification

• Wire diameter measurement

• Surface inspection

• Tensile strength testing

• Dimensional inspection

• Coil or spool weight verification

• Material certificate

• Inspection report

For customized orders, buyers can specify:

Material Grade + Diameter + Surface + Tensile Strength + Standard + Quantity

This information allows the required wire condition to be confirmed before production.

How to Select 302 Stainless Steel Spring Wire

When purchasing 0.8mm stainless steel spring wire, diameter is only one part of the specification.

1. Confirm the Material Grade

Specify AISI 302 / SUS302 or the required equivalent designation according to the applicable standard.

2. Confirm the Wire Diameter

The nominal diameter for this product is 0.8mm. Other sizes within 0.15–12mm can also be considered according to the spring design.

3. Confirm Mechanical Requirements

Tensile strength and wire condition should be selected according to the spring design, forming method and required working performance.

4. Select the Surface Condition

Choose bright or soap-coated surface according to the requirements of the coiling machine, tooling and downstream processing.

5. Confirm the Applicable Standard

ASTM, JIS, EN, DIN, GB or equivalent standards can be considered depending on the customer's market and technical specification.

Packaging and Supply

302 stainless steel spring wire can be supplied in coils or spools.

Packaging can be selected according to wire diameter, coil weight, production equipment, handling requirements and transportation conditions.

For customized orders, packaging requirements should be confirmed together with the wire specification.

Frequently Asked Questions

What is 0.8mm 302 stainless steel spring wire used for?

It is commonly used for compression springs, extension springs, torsion springs, wire forms, clips, fasteners and other industrial components.

What diameter range is available?

The available stainless steel spring wire diameter range is 0.15–12mm. The nominal diameter of this product is 0.8mm.

What surface options are available?

Bright and soap-coated surfaces are available. The appropriate surface should be selected according to the customer's forming and processing requirements.

Is AISI 302 suitable for spring manufacturing?

AISI 302 is a commonly used austenitic stainless steel grade for spring wire and formed-wire applications. The final specification should be selected according to spring geometry, mechanical requirements and operating conditions.

What information should I provide when requesting 302 spring wire?

For an accurate technical quotation, provide the grade, diameter, surface, tensile strength or mechanical requirement, applicable standard, quantity and packaging requirement.

Can the wire be supplied in coils or spools?

Yes. Coil and spool packaging are available, with the specific packaging configuration confirmed according to the wire size and customer's production requirements.

Technical Specification for Inquiry

For engineering and purchasing communication, the recommended specification format is:

AISI 302 + 0.8mm + Bright/Soap Coated + Tensile Strength Requirement + ASTM/JIS/EN/DIN Standard + Quantity + Coil/Spool

This format provides the key information required to evaluate the appropriate stainless steel spring wire specification.