Product Specification

Cold Heading 0.5–1.5mm SUS 302, 304 & 316 Stainless Steel Wire

Product Introduction

TOPONE stainless steel cold heading wire is designed for cold forming applications where the wire needs to provide suitable ductility, surface condition, and forming performance. This product is available in 0.5–1.5 mm diameters and SUS 302, 304, and 316 grades for manufacturing small and precision cold-formed components.

Cold heading forms wire into a required shape inside a die at room temperature. During this process, the wire is subjected to repeated compressive deformation, so material grade, delivery condition, diameter tolerance, surface condition, and lubrication are important factors when selecting cold heading wire.

For this reason, the suitable grade should be selected according to the required forming operation, component geometry, corrosion environment, and subsequent processing.

Product Specifications

Diameter tolerance, tensile strength, hardness, elongation, delivery condition and other mechanical requirements can be specified according to the selected grade and customer's cold heading process.

Material Grade Selection

SUS 302 Stainless Steel Cold Heading Wire

SUS 302 is an austenitic stainless steel grade used for applications requiring a combination of corrosion resistance and cold-forming capability. It can be considered for small fasteners and formed components where the forming process and required mechanical properties are compatible with the material.

SUS 304 Stainless Steel Cold Heading Wire

SUS 304 is commonly selected for general stainless steel fastener applications. Its balance of corrosion resistance, availability and cold-forming characteristics makes it suitable for screws, bolts, rivets, pins and other formed components.

SUS 316 Stainless Steel Cold Heading Wire

SUS 316 contains molybdenum in addition to chromium and nickel. It is generally considered when the finished component will be exposed to more demanding corrosive environments, particularly where chloride exposure is a design consideration.

The final grade should be selected according to the actual service environment, forming requirements and applicable material standard rather than corrosion resistance alone.

Surface and Lubrication Options

The standard product listed on this page has a bright surface.

For cold heading operations, surface condition and lubrication can affect wire feeding, die contact and forming behavior. TOPONE also supplies stainless steel cold heading wire with soap-coated surfaces for applications where additional lubrication is required by the customer's forming process.

The appropriate surface should be determined according to:

• Cold heading machine configuration

• Number of forming stages

• Die geometry

• Forming reduction

• Lubrication system

• Subsequent cleaning or finishing process

Typical Applications

Stainless Steel Fasteners

0.5–1.5 mm cold heading wire can be used as raw material for small-diameter stainless steel fasteners, including:

• Screws

• Small bolts

• Rivets

• Pins

• Studs

• Other cold-formed fastening components

Precision Cold-Formed Components

The wire can also be considered for small formed metal components where the required diameter, material grade and mechanical properties are suitable for the customer's forming process.

For parts with multiple heading stages or significant material deformation, the material grade and delivery condition should be evaluated together with the part geometry.

Product Advantages

Suitable Diameter Range for Small Components

The 0.5–1.5 mm diameter range is suitable for manufacturers producing small fasteners and precision cold-formed components. Final dimensional tolerance should be confirmed according to the customer's drawing and applicable standard.

Multiple Stainless Steel Grades

SUS 302, 304 and 316 are available, allowing material selection according to forming requirements and service environment.

Bright Surface

The bright surface provides a clean wire condition for applications where the wire surface is an important part of the production specification.

Standards-Based Production

The product can be supplied according to JIS, EN, ASTM, DIN, GB and equivalent standards. The specific standard and grade should be confirmed before production to ensure that chemical composition and mechanical requirements match the customer's specification.

Customizable Supply Conditions

Important purchasing parameters such as diameter, tolerance, tensile strength, delivery condition, surface treatment, coil dimensions and packaging can be discussed according to the customer's production requirements.

Quality Control and E-E-A-T Information

Cold heading wire performance depends on several measurable production parameters rather than a single material characteristic.

For each order, key specifications can include:

• Stainless steel grade

• Diameter and diameter tolerance

• Chemical composition

• Tensile strength

• Elongation

• Hardness

• Surface condition

• Delivery condition

• Applicable material standard

• Coil dimensions and packing requirements

TOPONE operates under an ISO 9001:2015 quality management system, providing a documented quality-management framework for production and inspection.

For technical quotations, buyers should provide the required grade, diameter, standard, tensile range, surface condition and application. This allows the cold heading wire to be matched more accurately to the forming process.

How to Select Stainless Steel Cold Heading Wire

When selecting 0.5–1.5 mm stainless steel cold heading wire, buyers should consider the following factors:

1. Confirm the Material Grade

Select SUS 302, 304 or 316 according to the required corrosion environment and forming requirements.

2. Confirm the Wire Diameter

The diameter should be selected according to the finished component design, heading ratio and machining allowance.

3. Check Mechanical Requirements

Tensile strength, elongation and hardness should be specified when they are controlled by the customer's production process or technical drawing.

4. Confirm Surface Condition

Bright and soap-coated surfaces can be selected according to the forming equipment and lubrication system.

5. Confirm the Applicable Standard

Specify the required JIS, ASTM, EN, DIN, GB or equivalent standard before production.

FAQ

What is stainless steel cold heading wire?

Stainless steel cold heading wire is wire specifically supplied for forming metal components at room temperature through cold heading or cold forging processes. It is commonly used to manufacture screws, bolts, rivets, pins and other fasteners.

What sizes are available for this product?

This product page covers diameters from 0.5 mm to 1.5 mm. Other diameters can be discussed according to the application and production requirements.

Which stainless steel grades are available?

The listed grades are SUS 302, SUS 304 and SUS 316. Other cold heading grades may also be available depending on the required specification.

Is the wire supplied with a bright surface?

Yes. The standard specification on this product page lists a bright surface. Soap-coated options can also be considered when required by the cold heading process.

What information should I provide for a quotation?

For a technical quotation, it is recommended to provide the stainless steel grade, wire diameter, required standard, tensile strength or mechanical requirements, surface condition, quantity, application and preferred packing.