Product Specification

JIS Standard 302 Stainless Steel Spring Wire – Hard Temper for Industrial Applications

Product Introduction

302 Stainless Steel Spring Wire is an austenitic stainless steel spring wire designed for industrial spring manufacturing and wire forming applications.

This spring wire is supplied in a hard condition for applications requiring the mechanical characteristics associated with cold-worked stainless steel spring wire. The material grade, wire diameter, mechanical condition and surface condition should be selected according to the requirements of the finished spring or formed wire component.

JIS Standard 302 stainless steel spring wire can be used for manufacturing compression springs, extension springs, torsion springs and other industrial spring components where a stainless steel spring wire is required.

Product Specifications

Note: Wire diameter, dimensional tolerance, tensile strength, surface condition and other mechanical requirements should be confirmed according to the specific product specification or purchase order.

Key Features of 302 Stainless Steel Spring Wire

1. 302 Stainless Steel Grade

Type 302 is an austenitic stainless steel grade commonly used in spring wire applications.

The material is suitable for applications where stainless steel material characteristics are required together with the mechanical properties obtained through cold working.

2. Hard Condition for Spring Applications

The hard condition is related to the cold-worked state of the wire. For spring manufacturing, the mechanical condition of the wire should be matched with the required forming process and final spring performance.

Actual mechanical properties should be evaluated according to the specified tensile strength, wire diameter, tolerance and applicable material standard.

3. Suitable for Industrial Spring Manufacturing

302 stainless steel spring wire can be formed into different spring configurations according to the application requirements, including:

• Compression springs

• Extension springs

• Torsion springs

• Small industrial springs

• Wire-formed spring components

• Mechanical spring parts

The final spring design should determine the appropriate wire specification and mechanical condition.

4. Suitable for Wire Forming

The wire can be processed through spring coiling and other wire-forming operations. Forming performance depends on the wire condition, diameter, tensile strength, tooling and spring geometry.

For precision applications, dimensional tolerance and surface condition should be confirmed before production.

Industrial Applications

Compression Springs

302 stainless steel spring wire can be used to manufacture compression springs for mechanical assemblies and industrial equipment.

Extension Springs

The material can be formed into extension springs designed to operate under tensile loading, subject to the required spring dimensions and mechanical specifications.

Torsion Springs

The wire can also be used for torsion springs where the spring operates through rotational or twisting movement.

Mechanical and Industrial Components

302 stainless steel spring wire is suitable for various wire-formed components used in machinery, equipment and industrial assemblies where a stainless steel spring material is required.

Technical Considerations Before Ordering

When selecting 302 stainless steel spring wire, buyers should consider more than the material grade alone.

Important specifications include:

• Stainless steel grade

• Wire diameter

• Dimensional tolerance

• Tensile strength

• Hardness or mechanical condition

• Surface condition

• Applicable standard

• Spring type

• Spring geometry

• Working load

• Working deflection

• Operating temperature

• Service environment

• Forming and coiling requirements

Matching these parameters with the finished spring design helps determine whether the selected wire condition is suitable for production.

Quality and Specification Control

For industrial spring wire, quality should be evaluated through measurable specifications.

Key inspection items may include:

• Material grade and chemical composition

• Wire diameter

• Dimensional tolerance

• Tensile strength

• Surface condition

• Mechanical condition

• Applicable spring wire tests

Where a specific JIE standard is required, the relevant grade, mechanical condition, dimensional requirements and testing criteria should be confirmed according to the applicable specification.

302 Stainless Steel Spring Wire for Different Spring Designs

Different spring designs place different requirements on the wire.

For compression springs, wire diameter, spring index, coil geometry and working load are important considerations.

For extension springs, the wire specification should be evaluated together with the required tensile loading and spring geometry.

For torsion springs, the wire condition and diameter should be matched with the required rotational load and forming process.

Therefore, selecting spring wire according to the actual spring design is more appropriate than selecting only by material grade.

Why Choose 302 Stainless Steel Spring Wire?

302 stainless steel spring wire provides a defined stainless steel material grade and hard mechanical condition for industrial spring and wire-forming applications.

For B2B purchasing, the appropriate specification should be determined by combining material grade, wire diameter, mechanical condition, surface condition, applicable standard and finished spring requirements.

This approach helps manufacturers select a spring wire specification that matches their production process and intended application.

FAQ

What is 302 stainless steel spring wire?

302 stainless steel spring wire is an austenitic stainless steel wire commonly used for manufacturing springs and other wire-formed components.

What does hard condition mean for spring wire?

Hard condition generally refers to a cold-worked mechanical condition of the wire. The actual mechanical properties should be confirmed through the specified tensile strength and applicable product standard.

What can 302 stainless steel spring wire be used for?

It can be used for compression springs, extension springs, torsion springs and other industrial wire-formed spring components.

Is 302 stainless steel suitable for industrial spring applications?

302 stainless steel is commonly used for spring wire applications. Suitability for a specific application depends on wire diameter, mechanical condition, spring design and operating environment.

What information should I provide when ordering spring wire?

Buyers should provide the material grade, wire diameter, tolerance, tensile strength or mechanical condition, surface requirement, standard, application and required quantity.