0.3mm AISI 302 Soap-Coated Stainless Steel Spring Wire

Product Overview

The 0.3mm AISI 302 Soap-Coated Stainless Steel Spring Wire is a fine stainless steel wire designed for spring manufacturing, wire forming and other applications requiring a small and defined wire diameter.

Made from AISI 302 stainless steel, this wire is supplied with a soap-coated surface that can provide a lubricated surface condition for subsequent forming and processing. The 0.3mm specification is suitable for applications where wire diameter, material condition and surface requirements need to be controlled according to the finished component.

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

Product Specifications

AISI 302 Stainless Steel for Fine Spring Wire

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

For fine spring wire, material grade alone does not determine the suitability of the final product. The selected wire condition, diameter tolerance, tensile strength and forming process should be considered together.

For the 0.3mm specification, customers can provide their required:

• Wire diameter and tolerance

• Tensile strength

• Wire condition

• Surface finish

• Spring type

• Forming method

• Material standard

• Inspection requirements

These details help determine the appropriate wire condition for the intended manufacturing process.

Why Use a Soap-Coated Surface?

Soap coating is a surface condition used on stainless steel wire for selected downstream processing applications.

For wire that will undergo forming or other mechanical processing, the surface condition can influence the interaction between the wire and production equipment. A soap-coated surface may therefore be selected when the manufacturing process requires a lubricated wire surface.

The coating specification should be matched to the customer's equipment, forming method and subsequent cleaning or finishing process.

For applications where a clean metallic appearance is preferred, a bright surface can also be discussed.

0.3mm Fine Wire Diameter

The 0.3mm nominal diameter makes this product suitable for applications requiring a relatively fine stainless steel wire.

When selecting fine spring wire, diameter tolerance should be considered together with the finished spring design. Important design parameters may include:

• Wire diameter

• Spring diameter

• Number of active coils

• Working load

• Spring deflection

• Forming method

• Required mechanical condition

A smaller wire diameter should not automatically be interpreted as suitable for a particular load or spring design. The final specification should be determined from the actual component requirements.

Typical Applications

Small Compression Springs

0.3mm 302 stainless steel spring wire can be used for selected compression spring applications where the wire diameter and mechanical condition match the spring design.

Extension Springs

For extension springs, the wire specification should be selected according to spring geometry, working load and forming requirements.

Torsion Springs

The wire can also be considered for small torsion spring production when the selected material condition is compatible with the required forming process.

Wire Forms

The 0.3mm wire can be processed into selected formed-wire components requiring a fine stainless steel wire diameter.

Small Formed Components

Depending on the material condition and production process, fine stainless steel wire can be used for selected formed components and other precision wire applications.

Product Advantages

0.3mm Fine Diameter

The 0.3mm specification provides a defined fine-wire option for applications where a smaller wire diameter is required.

AISI 302 Material

AISI 302 provides a commonly used stainless steel grade for spring wire and selected cold-forming applications.

Soap-Coated Surface

The soap-coated surface provides a lubricated wire condition for downstream processes where surface lubrication is required.

Flexible Wire Conditions

Hard or soft conditions can be discussed according to the required forming process and mechanical specification.

Multiple Diameter Availability

Although this product is specified as 0.3mm, the available stainless steel spring wire range covers approximately 0.1–12mm, allowing alternative diameters to be discussed for different component designs.

Bright and Soap-Coated Surface Options

Surface selection should be based on the customer's manufacturing process.

For this product, soap coated is the primary surface specification. Bright wire can be considered when a lubricated coating is not required.

Quality Control

For fine stainless steel spring wire, measurable specifications are important for evaluating product suitability.

Recommended inspection items include:

• Material grade

• Chemical composition

• Wire diameter

• Diameter tolerance

• Tensile strength

• Surface condition

• Coil or spool weight

• Material traceability

• Packaging condition

• Required inspection documentation

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

How to Select 0.3mm 302 Spring Wire

Before ordering, buyers are recommended to confirm:

1. Wire Diameter

Specify the required nominal diameter and tolerance.

2. Material Grade

Confirm AISI 302 or the applicable equivalent material specification.

3. Surface Condition

Select soap coated when the production process requires a lubricated surface condition. Bright surface can be discussed for alternative processing requirements.

4. Mechanical Condition

Provide the required tensile strength, hardness or wire condition when applicable.

5. Application

Specify whether the wire will be used for compression springs, extension springs, torsion springs, wire forms or another component.

6. Packaging

Specify coil, spool or pallet packaging according to the customer's processing and handling requirements.

Ordering Information

For a quotation or technical confirmation, provide:

• Diameter: 0.3mm

• Material: AISI 302

• Surface: Soap Coated

• Required quantity

• Tensile strength or hardness

• Application

• Applicable standard

• Packaging requirement

• Inspection or certification requirement

Providing these details allows the wire specification to be matched more closely to the customer's downstream manufacturing process.

FAQ

What is 0.3mm 302 soap-coated stainless steel spring wire?

It is a 0.3mm diameter AISI 302 stainless steel wire with a soap-coated surface, intended for selected spring manufacturing and wire-forming applications.

Why is soap coating used on spring wire?

Soap coating can provide a lubricated surface condition for certain downstream forming and processing operations. The appropriate coating depends on the customer's production process.

Is 0.3mm wire suitable for compression springs?

It can be used for selected compression spring applications when the wire diameter, mechanical condition and spring design are compatible.

Can 0.3mm 302 wire be supplied with a bright surface?

Yes. Bright and soap-coated surface conditions are available within the product range, subject to the specific product and production requirement.

What information is required when ordering 0.3mm spring wire?

The key information includes material grade, diameter and tolerance, tensile strength or hardness, surface condition, application, quantity, packaging and applicable standard.