Product Specification

302 Stainless Steel Spring Wire with Smooth Surface for Springs

Product Introduction

302 Stainless Steel Spring Wire with a smooth surface is designed for spring manufacturing, wire forming and industrial components requiring an austenitic stainless steel wire.

Made from AISI 302 / SUS302 stainless steel, the wire is suitable for various spring applications where material grade, wire diameter, mechanical condition and surface quality need to match the forming process.

The available diameter range is 0.15–12mm, covering fine spring wire and larger wire sizes for different spring designs.

The smooth surface can be selected according to the requirements of spring coiling equipment, tooling and downstream processing. For engineering applications, the final wire specification should be determined according to spring geometry, load requirements, mechanical properties and operating environment.

Product Specifications

Applications

Compression Springs

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

Wire diameter and mechanical condition should be selected according to the required spring load, deflection, dimensions and forming process.

Extension Springs

The wire can be formed into extension springs and other tension-loaded components.

For these applications, wire diameter, spring geometry, working load and operating conditions should be considered when selecting the appropriate specification.

Torsion Springs

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

The required wire diameter and mechanical condition should be evaluated together with torque requirements, spring geometry and forming conditions.

Wire Forms

The wire can also be processed into various formed-wire components, including:

• Clips

• Hooks

• Retaining components

• Fasteners

• Wire forms

• Industrial components

Product Advantages

AISI 302 Stainless Steel

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 various spring forming and wire forming processes.

Smooth Surface for Spring Forming

The smooth surface provides a controlled surface condition for downstream spring forming and wire processing.

Surface requirements should be selected according to the customer's coiling equipment, tooling, lubrication system and subsequent processing.

0.15–12mm Diameter Range

The available diameter range is 0.15–12mm, providing options for different spring designs and formed-wire applications.

The specific wire diameter should be selected according to spring geometry, load requirements and manufacturing equipment.

Application-Specific Mechanical Properties

Tensile strength and delivery condition can be specified according to the material grade, wire diameter, spring design and forming process.

For spring manufacturing, mechanical properties should be evaluated together with wire diameter and spring geometry.

Coil and Spool Supply

The spring wire can be supplied in coils or spools according to wire diameter, production equipment and customer requirements.

Quality Control

For stainless steel spring wire, quality should be evaluated through measurable technical parameters.

Depending on order requirements, inspection may include:

• Chemical composition verification

• Wire diameter measurement

• Dimensional tolerance inspection

• Surface inspection

• Tensile strength testing

• Delivery condition verification

• Material certificate

• Inspection report

For customized orders, the required material grade, diameter, surface condition, tensile strength, applicable standard and quantity should be confirmed before production.

How to Select 302 Stainless Steel Spring Wire

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 available diameter range is 0.15–12mm.

The selected diameter should match the spring design, load requirements, forming equipment and finished component dimensions.

3. Define Mechanical Requirements

Specify the required tensile strength or mechanical condition according to the spring design and forming process.

4. Confirm the Surface Condition

A smooth or bright surface can be selected according to the requirements of the coiling machine, tooling, lubrication and downstream processing.

5. Confirm the Applicable Standard

ASTM, JIS, EN, DIN, GB or equivalent specifications can be considered according to the customer's technical requirements.

Packaging and Supply

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

Packaging configuration 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 302 stainless steel spring wire used for?

It can be used for compression springs, extension springs, torsion springs, wire forms, clips, hooks and other industrial spring components.

What diameter range is available?

The available stainless steel spring wire diameter range is 0.15–12mm.

What does a smooth surface mean for spring wire?

A smooth surface refers to the specified surface condition of the wire. It can be selected according to spring forming equipment, tooling, lubrication and downstream 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 design, mechanical requirements and operating conditions.

Can the tensile strength be customized?

Tensile strength requirements can be specified according to the material grade, wire diameter, delivery condition and intended application.

What information is needed for a quotation?

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

Technical Specification for Inquiry

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

AISI 302 + Wire Diameter + Smooth/Bright Surface + Tensile Strength Requirement + ASTM/JIS/EN/DIN Standard + Quantity + Coil/Spool

Providing these details helps confirm the appropriate stainless steel spring wire specification before production.