Product Specification

4mm AISI 304 Stainless Steel EPQ Wire | 0.15–12mm

Product Introduction

TOPONE 4mm AISI 304 Stainless Steel EPQ Wire is manufactured from SUS304 / AISI 304 / EN 1.4301 stainless steelfor precision wire forming, hardware components, spring-related applications and other industrial wire products.

The featured diameter is 4mm, with an available diameter range of 0.15–12mm. Depending on the application and production requirements, the wire can be supplied with bright, polished or soap-coated surface conditions.

The product can be manufactured in different mechanical conditions, including soft, semi-hard and hard conditions. Diameter tolerance and tensile strength should be specified according to the required application, forming process and applicable technical standard.

For B2B procurement, the key specification should be confirmed as a complete combination of material grade, diameter, tolerance, surface finish, mechanical condition and application rather than relying only on the product name.

Product Specifications

* The actual tolerance, mechanical condition and applicable standard should be confirmed according to diameter and purchase requirements.

Key Product Features

4mm AISI 304 Stainless Steel Wire

The featured wire diameter is 4mm and the available product range is 0.15–12mm.

304 stainless steel is an austenitic stainless steel grade widely used in industrial wire products. For wire-forming applications, the appropriate mechanical condition and surface finish should be selected according to the forming process and final component requirements.

Controlled Diameter Range

TOPONE supplies the product family from 0.15mm to 12mm, covering fine, medium and larger wire diameters.

The original product specification lists diameter tolerances from ±0.01mm to ±0.03mm, depending on the product specification. The exact tolerance should be confirmed for the required diameter before production.

Multiple Surface Options

The wire can be supplied with different surface conditions, including:

• Bright surface

• Polished surface

• Soap-coated surface

Surface selection should be based on the customer's forming equipment, tooling, appearance requirements and subsequent processing.

Cold Drawn and Bright Annealed Conditions

The production process can include cold drawing and bright annealing, depending on the required wire condition and specification.

Cold drawing is used to control wire diameter and mechanical condition, while annealing may be applied when a different level of ductility or processing condition is required.

The exact process route should be selected according to the required diameter, mechanical properties and final application.

Applications

Precision Wire Forming

304 stainless steel EPQ wire can be used for selected wire-forming applications where material grade, diameter and surface condition need to be controlled.

Typical components may include:

• Wire-formed hardware

• Clips

• Hooks

• Brackets

• Formed metal components

Kitchen Hardware

304 stainless steel wire is suitable for selected kitchen-related wire products, including:

• Kitchen racks

• Wire baskets

• Kitchen accessories

• Formed stainless steel components

The final material selection should consider the required surface finish, forming process and service environment.

Bathroom Accessories

The wire can be used for selected bathroom hardware and formed stainless steel components where the required material grade and surface condition are suitable.

Spring Components

304 stainless steel wire can also be considered for selected spring and wire-forming applications when the required diameter, mechanical condition and spring specification are compatible.

For dedicated spring-wire applications, buyers should confirm the applicable spring-wire standard and required tensile strength before production.

Industrial Wire Components

The material can be used for selected industrial and precision metal components, including formed wire parts and customized wire products.

How to Select 304 Stainless Steel EPQ Wire

For industrial purchasing, the following parameters should be confirmed before ordering:

1. Material: AISI 304 / SUS304 / EN 1.4301

2. Diameter: 4mm or required size

3. Available range: 0.15–12mm

4. Diameter tolerance: Required tolerance according to application

5. Surface: Bright, polished or soap coated

6. Mechanical condition: Soft, semi-hard or hard

7. Tensile strength: Required value or range

8. Forming process: Bending, coiling, forming or other processing

9. Applicable standard: ASTM, JIS, EN or customer specification

10. Packaging: Coil, spool or wooden reel

A technical drawing or detailed product specification is recommended for customized wire requirements.

Quality Control

For stainless steel wire, quality should be evaluated using measurable parameters that correspond to the purchase specification.

Material Verification

The raw material can be checked against the specified 304 stainless steel grade and relevant material documentation.

Diameter Inspection

Wire diameter can be measured during production and final inspection.

The listed product tolerance is ±0.01mm–±0.03mm, depending on the specification.

Surface Inspection

The bright, polished or soap-coated surface can be inspected according to the agreed surface condition.

Mechanical Property Testing

Depending on the required wire condition and order specification, mechanical properties such as tensile strength and hardness can be tested.

Packaging Inspection

Coil, spool or wooden reel packaging can be inspected before shipment to verify weight, dimensions and protection requirements.

Production Process

The production route for 304 stainless steel wire may include several controlled stages:

1. Raw Material Inspection

The stainless steel wire rod is checked against the specified material grade and relevant chemical composition requirements.

2. Surface Preparation

Cleaning and surface preparation are carried out according to the required wire production process.

3. Wire Drawing

Cold drawing is used to reduce and control the wire diameter according to the required specification.

4. Annealing

Bright annealing can be applied where the required mechanical condition and processing properties call for an annealed state.

5. Surface Finishing

The wire can receive the specified bright, polished or soap-coated surface condition.

6. Final Inspection

The finished wire can be inspected for:

• Diameter

• Dimensional tolerance

• Surface condition

• Tensile strength

• Hardness, when specified

• Material documentation

• Packaging condition

Standards and Technical Documentation

The original product specification lists ASTM A580, JIS G4309 and other customer-specified standards. The applicable standard should be confirmed according to the material grade, product type, mechanical condition and intended application.

Different standards should not be treated as interchangeable. Buyers should specify the required standard when requesting a quotation or placing an order.

Depending on the order, technical documentation may include:

• Material specification

• Chemical composition documentation

• Diameter inspection report

• Tensile test report

• Surface inspection record

• Mill Test Certificate (MTC), when required

FAQ

What is 4mm AISI 304 stainless steel EPQ wire?

It is a 4mm stainless steel wire manufactured from AISI 304 / SUS304 material for selected precision wire-forming, hardware and industrial applications.

What diameter range is available?

The available diameter range is 0.15–12mm, with 4mm as the featured product specification.

What surface finishes are available?

The product can be supplied with bright, polished or soap-coated surfaces, depending on the application and production requirements.

What is the tolerance of the wire?

The listed tolerance range is ±0.01mm–±0.03mm, depending on the diameter and product specification. The exact tolerance should be confirmed before production.

Can 304 EPQ wire be used for spring manufacturing?

It can be considered for selected spring applications when the material condition, diameter and mechanical properties meet the spring design requirements. Dedicated spring-wire applications should be specified according to the applicable spring-wire standard.

Can the diameter and mechanical properties be customized?

Yes. Diameter, surface finish, mechanical condition, tensile strength and packaging can be discussed according to the customer's technical specification.

Technical Support for 304 Stainless Steel Wire Selection

When selecting 304 stainless steel wire, the material grade should not be considered separately from the dimensional and processing requirements.

For the 4mm AISI 304 stainless steel EPQ wire, the key selection factors are:

Material → Diameter → Tolerance → Surface → Mechanical Condition → Forming Process → Application → Standard

Providing these parameters allows the wire specification to be matched more accurately with the customer's actual manufacturing process.