Product Specification

2.6mm 302 SCO Soap-Coated / Bright Stainless Steel Spring Wire

Product Overview

The 2.6mm 302 stainless steel spring wire is a cold-drawn stainless steel wire designed for spring manufacturing and wire forming applications where controlled wire diameter, suitable mechanical properties, and a clean surface condition are required.

This product is available with a bright or soap-coated surface. The 2.6mm diameter provides a practical specification for medium-size springs and formed wire components, while other diameters can be supplied according to production requirements.

The wire is manufactured from AISI 302 stainless steel, a commonly used stainless steel grade for spring wire. Depending on the required spring design and forming process, the wire condition can be selected according to the customer's mechanical and processing requirements.

Product Specifications

302 Stainless Steel Spring Wire for Spring Manufacturing

AISI 302 stainless steel is widely used for spring wire because its work-hardening characteristics make it suitable for cold forming and spring production.

For a 2.6mm wire, the final mechanical properties should be selected according to the spring design, forming method, working load and required spring deflection. For this reason, tensile strength and hardness should be confirmed against the required wire condition rather than using one fixed value for every application.

For production orders, buyers can specify requirements such as:

• Wire diameter and tolerance

• Required tensile strength

• Surface condition

• Spring type

• Forming method

• Coil or spool requirements

• Applicable material standard

• Inspection or certification requirements

This specification-based approach helps match the stainless steel spring wire to the actual manufacturing process.

Bright and Soap-Coated Surface Options

Bright Surface

Bright stainless steel spring wire provides a clean metallic surface and is suitable for applications where surface appearance and downstream processing requirements are important.

Soap-Coated Surface

Soap coating can be selected when the wire is processed through forming or drawing operations where surface lubrication is required. The appropriate coating condition should be determined according to the customer's forming equipment and production process.

The bright and soap-coated options should not be treated as interchangeable finishes. The appropriate surface depends on whether the priority is surface appearance, processing behavior, lubrication or subsequent treatment.

Typical Applications

Compression Springs

2.6mm 302 stainless steel spring wire can be used for manufacturing compression springs where the required wire diameter and mechanical condition match the spring design.

Torsion and Extension Springs

For torsion and extension springs, wire selection should consider the spring geometry, forming process, working load and required fatigue conditions.

Wire Forms

The wire can also be processed into formed wire components and other bent-wire products where stainless steel is required.

Screws and Small Formed Components

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

Product Advantages

Controlled 2.6mm Diameter

The 2.6mm specification is suitable for applications requiring a defined medium wire diameter. Diameter tolerance should be confirmed according to the applicable production standard and customer's drawing.

AISI 302 Material

302 stainless steel is a widely used stainless steel grade for spring wire and cold forming applications. Material selection can be matched to the required mechanical properties and processing conditions.

Two Surface Options

Bright and soap-coated surfaces provide flexibility for different downstream manufacturing processes. Customers can specify the required surface condition when placing an inquiry.

Multiple Diameter Availability

The product range covers approximately 0.1–12mm, allowing customers to discuss alternative diameters when the standard 2.6mm specification does not match the spring design.

Documentation and Inspection Support

ISO, SGS and RoHS-related documentation can be provided according to product and order requirements. Material certificates and inspection requirements should be confirmed before production.

Quality Control Considerations

For stainless steel spring wire, quality evaluation should focus on measurable characteristics rather than general claims of reliability.

Recommended inspection items include:

• Chemical composition

• Wire diameter and tolerance

• Tensile strength

• Surface condition

• Coil or spool weight

• Material traceability

• Applicable material standard

• Packaging condition

For applications involving repeated loading, spring manufacturers should additionally evaluate the wire according to the actual spring design and working conditions.

Ordering Information

To select the appropriate 302 stainless steel spring wire, customers are recommended to provide:

1. Required diameter

2. Spring or wire-form application

3. Required tensile strength or hardness

4. Surface requirement: bright or soap coated

5. Coil or spool requirement

6. Required quantity

7. Applicable material standard

8. Inspection or certification requirements

Providing these specifications before production allows the wire condition and surface finish to be matched more closely to the customer's downstream process.