Product Specification

1.5mm AISI 302 Bright Stainless Steel Spring Wire

Product Overview

The 1.5mm AISI 302 Bright 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 stainless steel material.

This product uses AISI 302 stainless steel and has a bright surface finish. The 1.5mm diameter is suitable for applications where the wire size, material condition and surface condition need to be controlled according to the finished spring or formed-wire component.

The wire can be supplied in different conditions according to production requirements. For spring manufacturing, the appropriate tensile strength and wire condition should be selected according to the spring design, forming process, working load and required deflection.

Product Specifications

AISI 302 Stainless Steel for Spring Wire

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

For spring production, the final wire properties depend on the material condition, cold-working process and required mechanical specification. Therefore, wire selection should not be based on material grade alone.

For a 1.5mm spring wire application, buyers can specify the required:

• Wire diameter and tolerance

• Tensile strength

• Wire condition

• Surface finish

• Spring type

• Forming process

• Material standard

• Inspection requirements

These parameters help determine whether the supplied wire condition is suitable for the customer's downstream manufacturing process.

Bright Surface Finish

The bright surface provides a clean metallic appearance and is suitable for applications where the surface condition is an important part of the finished wire or spring.

Compared with soap-coated wire, bright wire may be preferred when the downstream process does not require a lubricated coating or when the visible surface of the finished component needs to remain clean.

Surface selection should be based on the actual forming, cleaning, coating and assembly process.

1.5mm Wire Diameter for Spring Manufacturing

The nominal 1.5mm diameter provides a defined starting specification for spring and formed-wire production.

The required diameter tolerance should be confirmed according to the applicable standard, customer drawing or production specification.

For spring applications, engineers should evaluate the complete spring design rather than selecting wire based only on diameter. Important factors include:

• Spring outside and inside diameter

• Number of active coils

• Working load

• Spring deflection

• Operating temperature

• Forming method

• Required fatigue performance

Typical Applications

Compression Springs

1.5mm 302 stainless steel spring wire can be considered for compression spring production when the selected wire condition matches the required spring design and working conditions.

Extension Springs

For extension springs, wire selection should consider the spring geometry, forming process, working load and required mechanical properties.

Torsion Springs

AISI 302 wire can also be processed into torsion springs where the material condition and wire diameter are suitable for the specified spring design.

Wire Forms

The 1.5mm wire can be used for selected formed-wire components requiring a defined stainless steel wire diameter.

Screw and Other Formed Components

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

Bright vs. Soap-Coated Surface

TopOne can discuss both bright and soap-coated surface conditions according to the customer's downstream process.

For this product page, bright surface is the primary specification. Soap-coated wire should be treated as an alternative configuration rather than the main product characteristic.

Product Advantages

Defined 1.5mm Diameter

The 1.5mm nominal diameter provides a clear specification for spring and wire-form manufacturing. Diameter tolerance can be discussed according to the applicable standard or customer drawing.

AISI 302 Material

The AISI 302 grade provides a commonly used stainless steel material option for spring wire applications. The appropriate wire condition should be selected according to the required forming and mechanical properties.

Bright Surface

The bright finish provides a clean metallic surface and can be selected when the downstream application requires a bright wire appearance or does not require a soap-coated surface.

Flexible Diameter Supply

Although this product is specified as 1.5mm, TopOne's stainless steel spring wire range covers approximately 0.1–12mm, allowing buyers to discuss alternative diameters for different spring designs.

Multiple Packaging Options

The wire can be supplied in coil, spool or pallet packaging, with the final packaging configuration confirmed according to the customer's production and handling requirements.

Quality Control

For stainless steel spring wire, quality should be evaluated through measurable specifications rather than general performance claims.

Recommended inspection items include:

• Material grade

• Chemical composition

• Wire diameter

• Diameter tolerance

• Tensile strength

• Surface condition

• Coil or spool weight

• Packaging condition

• Material traceability

• Required inspection documentation

For applications involving repeated spring loading, the finished spring should be evaluated according to its actual geometry and operating conditions.

How to Order 1.5mm 302 Stainless Steel Spring Wire

To specify the correct wire for your application, buyers are recommended to provide:

1. Required diameter: 1.5mm

2. Material grade: AISI 302

3. Surface: Bright

4. Required tensile strength or hardness

5. Spring type or wire-form application

6. Required quantity

7. Coil or spool requirement

8. Applicable material standard

9. Inspection or certification requirements

Providing these details allows the wire specification and supply condition to be matched more closely to the customer's production process.

FAQ

What is 1.5mm 302 stainless steel spring wire?

It is a 1.5mm diameter stainless steel wire made from AISI 302 material and supplied with a bright surface finish for spring and selected wire-forming applications.

Is 1.5mm 302 wire suitable for compression springs?

It can be used for compression spring manufacturing when the selected wire condition, diameter tolerance and mechanical properties are suitable for the specific spring design.

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

Bright wire has a clean metallic surface, while soap-coated wire has a lubricated surface condition intended for certain downstream forming processes. The appropriate surface depends on the customer's manufacturing process.

What information should I provide when ordering spring wire?

The most useful information includes diameter, material grade, tensile strength or hardness, surface finish, spring type, quantity, packaging and applicable material standard.