Product Specification

2.6mm 302 Stainless Steel Spring Wire for Easier Forming

Product Introduction

2.6mm 302 Stainless Steel Spring Wire is a cold-drawn stainless steel wire designed for spring manufacturing, wire forming and other applications requiring a defined wire diameter and controlled surface condition.

Made from AISI 302 stainless steel, the wire is available with a bright or soap-coated surface. The nominal diameter of this product is 2.6mm, while the available stainless steel spring wire range is 0.15–12mm.

The appropriate wire condition should be selected according to spring geometry, working load, required mechanical properties, forming equipment and service environment.

For spring manufacturers, specifying the material grade, diameter, surface condition and mechanical condition together provides a more complete basis for material selection.

Product Specifications

Note: Final tensile strength, dimensional tolerance and mechanical condition should be confirmed according to the selected diameter, applicable standard and purchase specification.

AISI 302 Stainless Steel for Spring Applications

AISI 302 is an austenitic stainless steel grade commonly used for stainless steel spring wire and cold wire-forming applications.

Its cold-working characteristics make it suitable for manufacturing different types of springs and formed-wire components.

For a 2.6mm spring wire, diameter alone does not determine whether the wire is suitable for a specific spring. Buyers should also consider:

• Required tensile strength

• Wire condition

• Spring diameter

• Working load

• Working deflection

• Forming process

• Service environment

This specification-based approach helps match the wire condition with the actual production process.

Bright and Soap-Coated Surface Options

Bright Stainless Steel Spring Wire

The bright surface provides a clean metallic appearance and can be selected for applications where surface condition and appearance are important.

It can be considered for spring and wire-forming processes where the customer's equipment and downstream processing are compatible with a bright wire surface.

Soap-Coated Stainless Steel Spring Wire

The soap-coated surface can be selected for forming processes where surface lubrication is required.

The suitable coating condition should be determined according to the forming equipment, tooling, lubrication requirements and subsequent processing.

Bright and soap-coated wire should therefore be selected according to the actual manufacturing process rather than treated as interchangeable surface options.

2.6mm Diameter for Spring and Wire Forming

The 2.6mm nominal diameter provides a defined wire size for spring manufacturing and formed-wire components.

The final wire tolerance should be specified according to the applicable standard or customer's technical drawing.

For customized orders, buyers can provide:

• Required diameter

• Diameter tolerance

• Material grade

• Tensile strength

• Wire condition

• Surface finish

• Applicable standard

• Coil or spool requirements

0.15–12mm Diameter Range

TOPONE supplies stainless steel spring wire in diameters from 0.15–12mm.

The 2.6mm specification is suitable for applications requiring a medium wire diameter, while other sizes within the range can be selected according to spring design and forming requirements.

These are general application references. The final diameter should be determined according to the component drawing, spring design, required load and forming process.

Applications

Compression Springs

2.6mm 302 stainless steel spring wire can be used for compression spring production when the wire diameter and mechanical condition match the spring design.

Important design parameters include spring diameter, free length, working load, working deflection and number of active coils.

Extension Springs

The wire can be processed into extension springs where the specified diameter, mechanical condition and forming process are suitable for the required spring design.

Torsion Springs

For torsion spring applications, material selection should consider wire diameter, spring geometry, forming process and required mechanical properties.

Wire Forms and Clips

The 2.6mm wire can also be used for formed-wire components such as:

• Wire forms

• Clips

• Hooks

• Retaining components

• Brackets

• Fasteners

• Hardware components

Screw and Formed Components

Depending on the specified wire condition and forming process, 302 stainless steel wire can be considered for selected screw and formed-component applications.

Product Advantages

AISI 302 Stainless Steel

AISI 302 provides a commonly used stainless steel material option for spring manufacturing and cold wire forming.

Defined 2.6mm Diameter

The 2.6mm nominal diameter provides a clear starting specification for spring design and wire-forming applications.

Bright and Soap-Coated Options

Two surface options are available for different forming, lubrication and downstream processing requirements.

Cold-Drawn Manufacturing

Cold drawing is used to reduce and control wire diameter while developing the mechanical condition required for the specified application.

0.15–12mm Diameter Availability

The wider product range allows buyers to select different stainless steel spring wire diameters according to spring design and production requirements.

Coil and Spool Supply

The wire can be supplied in coil or spool form according to wire diameter, production equipment, handling requirements and order specifications.

Quality Control and Inspection

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

Depending on the order specification, inspection can include:

Material Verification

Chemical composition can be checked against the specified AISI 302 stainless steel grade, with material documentation provided according to order requirements.

Dimensional Inspection

Wire diameter and dimensional tolerance can be inspected according to the agreed specification.

Mechanical Testing

Tensile strength and other required mechanical properties can be tested according to the applicable product standard and purchase specification.

Surface Inspection

The wire surface can be inspected according to the agreed bright or soap-coated surface condition and applicable quality requirements.

Documentation

Material Test Certificates and inspection documents can be provided when required by the customer's purchase specification.

Applicable Standards

For stainless steel spring wire, ASTM A313/A313M can be used as a reference standard for stainless steel round spring wire intended for spring manufacturing.

Depending on the customer's market and technical requirements, specifications may also reference AISI, EN, DIN, JIS or equivalent standards.

The exact standard, material grade, diameter, tensile strength, tolerance and inspection requirements should be confirmed before production.

How to Select 302 Stainless Steel Spring Wire

When purchasing 302 stainless steel spring wire, providing only the diameter is usually not enough for technical confirmation.

A complete purchasing specification can include:

Grade + Diameter + Surface + Tensile Strength / Condition + Standard + Quantity

For example:

AISI 302 + 2.6mm + Soap Coated + Required Tensile Strength + Applicable Standard + Required Quantity

For spring manufacturing, buyers should also provide the following information when available:

• Spring type

• Spring diameter

• Working load

• Working deflection

• Number of coils

• Forming equipment

• Service environment

This information helps determine the appropriate wire specification for the intended manufacturing process.

Packaging and Supply

2.6mm 302 stainless steel spring wire can be supplied in coils or spools according to customer requirements.

Packaging specifications can include:

• Coil or spool type

• Coil weight

• Wire diameter

• Surface condition

• Material grade

• Mechanical condition

• Packaging method

• Customer handling requirements

Customized packaging can be discussed according to the customer's production equipment and pay-off system.

Frequently Asked Questions

What is 2.6mm 302 stainless steel spring wire used for?

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

What diameter range is available?

The stainless steel spring wire product range is available from 0.15–12mm. The nominal diameter of this product is 2.6mm.

What is the material of 302 spring wire?

The material is AISI 302 / SUS302 stainless steel, also identified as UNS S30200 and EN 1.4310.

What is the difference between bright and soap-coated spring wire?

Bright wire has a clean metallic surface, while soap-coated wire provides a different surface condition for forming and lubrication requirements. The suitable option depends on the customer's forming equipment and production process.

Is 302 stainless steel suitable for spring manufacturing?

AISI 302 is commonly used for stainless steel spring wire. The final wire condition should be selected according to spring geometry, mechanical requirements, forming process and service conditions.

What information should I provide for a quotation?

It is recommended to provide the material grade, wire diameter, surface condition, tensile strength or wire condition, applicable standard, quantity and packaging requirements.

Can 2.6mm 302 spring wire be supplied in coils or spools?

Yes. Coil or spool packaging can be specified according to the wire diameter, production equipment and customer requirements.

Technical Inquiry

For a 302 stainless steel spring wire inquiry, please provide:

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

For spring or wire-forming projects, providing the spring drawing or component specification can help determine the appropriate wire condition and production requirements.