2.3mm 302 Stainless Steel Spring Wire for Precision Spring Manufacturing

Product Introduction

TOPONE supplies 2.3mm AISI 302 stainless steel spring wire for compression springs, torsion springs, extension springs, and other industrial wire-forming applications.

This product features a nominal wire diameter of 2.3mm and a specified tensile strength of 1550–1800 N/mm² in hard temper. These parameters provide spring manufacturers with a defined starting point for material selection and production planning.

The wire is available with bright or soap-coated surface options to accommodate different spring coiling and wire-forming processes. The appropriate surface condition depends on the forming equipment, lubrication requirements, and subsequent processing steps.

TOPONE's overall stainless steel wire diameter range is 0.15-12mm. For customized orders, material grade, wire diameter, tensile strength, dimensional tolerance, surface finish, and applicable standards should be confirmed according to the intended spring design.

Product Specifications

Note: Confirm the applicable standard, dimensional tolerance, tensile strength, and surface requirements before ordering. Mechanical properties should be evaluated against the agreed product specification.

Material Characteristics of AISI 302 Stainless Steel

AISI 302 is an austenitic chromium-nickel stainless steel grade used in wire manufacturing and spring applications. Its mechanical properties can be adjusted through cold working, making the specified material condition an important part of spring wire selection.

Hard Temper and Tensile Strength

The listed tensile strength for this 2.3mm product is 1550–1800 N/mm². This range should be considered alongside wire diameter, spring geometry, working load, and forming requirements.

Hard-temper wire is suitable for spring manufacturing when its mechanical condition meets the requirements of the finished component. The required strength should be verified against the agreed standard and inspection criteria.

Corrosion Resistance

AISI 302 offers corrosion resistance typical of its stainless steel grade. Suitability depends on the service environment, including moisture, chloride exposure, temperature, and chemical contact.

For applications involving aggressive corrosion conditions, material selection should be reviewed against the actual operating environment.

Surface Treatment Options

Bright Surface

Bright stainless steel spring wire provides a metallic surface appearance and can be selected according to the requirements of the spring-forming process and finished component.

Soap-Coated Surface

Soap-coated wire has a lubricated surface condition that can support wire feeding and spring coiling. Its suitability depends on forming equipment, tooling, lubrication requirements, and any subsequent cleaning process.

The surface finish should be specified according to the manufacturing process rather than appearance alone.

Applications

Compression Springs

2.3mm 302 stainless steel spring wire can be used for compression spring manufacturing when the wire properties match the design requirements.

Important selection parameters include:

• Spring outer diameter

• Free length

• Number of active coils

• Required working load

• Compression distance

• Operating frequency

Torsion Springs

For torsion spring applications, wire diameter should be evaluated together with coil diameter, leg configuration, working angle, and required torque.

Extension Springs

The wire can also be considered for extension springs. The required spring dimensions, end configuration, working load, and operating cycles should be defined before selecting the final specification.

Industrial Wire-Formed Components

Depending on the design and mechanical requirements, 302 stainless steel wire can also be used for selected clips, formed-wire components, and mechanical assemblies.

Product Advantages

1. Defined 2.3mm Wire Diameter

The nominal diameter of 2.3mm provides a specific wire size for spring manufacturers to evaluate against spring geometry, forming equipment, and installation requirements.

2. Specified Tensile Strength

The listed tensile strength of 1550–1800 N/mm² provides a measurable reference for material selection and incoming inspection. The actual requirement should be confirmed against the applicable product standard.

3. Hard-Temper Material Condition

The specified hard condition is intended for applications requiring cold-worked spring wire. Final suitability depends on the required mechanical properties and forming process.

4. Bright and Soap-Coated Options

Two surface options allow the wire specification to be matched to different coiling and wire-feeding requirements.

5. Multiple Applicable Standards

JIS, EN, ASTM, AISI, DIN, and GB specifications can be considered, subject to confirmation of the exact grade designation and requirements for the order.

Spring Wire Selection Guide

Confirm the Spring Type

Identify whether the finished component is a compression, torsion, or extension spring. Each design has different loading and geometric requirements.

Evaluate Wire Diameter and Spring Geometry

The 2.3mm diameter should be assessed together with the mean coil diameter, free length, number of coils, and available installation space.

Specify Tensile Strength

Confirm whether the listed range of 1550–1800 N/mm² meets the finished spring's mechanical requirements and applicable standard.

Select the Surface Condition

Choose bright or soap-coated wire according to the spring coiling process, tooling, and downstream treatment requirements.

Review the Operating Environment

Consider working temperature, corrosion exposure, loading conditions, and expected operating cycles when confirming material suitability.

Quality Control Considerations

For 2.3mm 302 stainless steel spring wire, relevant inspection items may include:

• Material grade and chemical composition

• Wire diameter and dimensional tolerance

• Tensile strength

• Material condition

• Surface finish

• Coil or spool condition

• Packaging and identification

• Compliance with the agreed product standard

Inspection methods and acceptance criteria should be established according to the purchase specification. Any required test reports or material certificates should be confirmed before ordering.

Ordering Information

To specify 2.3mm 302 stainless steel spring wire, provide the following information:

• Material grade: AISI 302 / SUS 302

• Wire diameter: 2.3mm

• Tensile strength: 1550–1800 N/mm² or required range

• Material condition: Hard temper

• Surface: Bright or soap-coated

• Applicable standard

• Spring application

• Required quantity

• Coil or spool packaging requirements

A spring drawing or basic spring dimensions can help clarify the wire requirements for a customized project.

Frequently Asked Questions

What is the diameter of this 302 stainless steel spring wire?

The featured product has a nominal wire diameter of 2.3mm. TOPONE's overall stainless steel wire diameter range is 0.15-12mm.

What is the specified tensile strength?

The listed tensile-strength range is 1550–1800 N/mm². Confirm the required values against the applicable standard and order specification.

Which spring types can use this wire?

The wire is specified for compression, torsion, and extension spring manufacturing. Final suitability depends on the spring design and operating conditions.

What surface options are available?

Bright and soap-coated surface options are listed for this product. The appropriate finish depends on the forming process and downstream requirements.

What information is needed for a quotation?

Provide the material grade, wire diameter, tensile strength, surface finish, applicable standard, order quantity, packaging requirements, and intended application.