Product Specification

302CHQ 304HQ Stainless Steel Wire for Controlled Cold Forming

Product Introduction

302CHQ and 304HQ Stainless Steel Wire is designed for cold heading, cold forming and precision formed components where material grade, wire diameter, surface condition and mechanical properties need to match the forming process.

Available material grades include 302CHQ, 304HQ, 304 and 430 stainless steel. The wire is supplied with a bright surface and can be produced in soft or semi-soft conditions according to the forming requirements.

The available diameter range is 0.15–12mm, covering fine wire and larger sizes used for different cold forming applications.

For cold heading production, the appropriate wire should be selected according to the finished component design, deformation level, heading ratio, wire diameter, mechanical properties, lubrication conditions and number of forming operations.

Product Specifications

Material Selection

302CHQ Stainless Steel Wire

302CHQ is a copper-bearing austenitic stainless steel grade commonly used for cold heading and cold forming applications.

It can be considered for applications where the wire needs to undergo cold forming into screws, fasteners and other precision components.

Typical applications include:

• Screws

• Self-tapping screws

• Precision fasteners

• Rivets

• Small formed components

304HQ Stainless Steel Wire

304HQ is another stainless steel grade used for cold heading and formed components.

It can be selected for applications requiring a combination of stainless steel properties and cold forming characteristics.

Typical applications include:

• Bolts

• Nuts

• Screws

• Rivets

• General fasteners

• Industrial formed components

304 and 430 Stainless Steel Wire

304 and 430 grades are also available for different cold forming requirements.

Material selection should consider the required forming characteristics, mechanical properties, corrosion requirements and final component application.

Cold Forming Applications

Stainless Steel Fasteners

302CHQ and 304HQ stainless steel wire can be used as raw material for manufacturing:

• Screws

• Bolts

• Nuts

• Rivets

• Studs

• Pins

• Washers

• Other fastening components

Cold-Formed Components

The wire can also be processed through cold heading, upsetting and other forming operations to produce precision hardware and industrial components.

The appropriate wire condition depends on the component geometry, deformation level and number of forming steps.

Product Advantages

Multiple Material Grades

The product range includes 302CHQ, 304HQ, 304 and 430 stainless steel, allowing material selection according to forming requirements and finished component specifications.

Soft and Semi-Soft Conditions

Both soft and semi-soft delivery conditions are available.

The appropriate condition can be selected according to the required deformation, forming sequence and production process.

0.15–12mm Diameter Range

The available diameter range is 0.15–12mm, covering fine wire and larger sizes for different cold heading and cold forming applications.

Customized Tensile Strength

Tensile strength requirements can be specified according to the selected material grade, wire diameter, delivery condition and final application.

This allows the wire specification to be evaluated against the customer's actual forming process instead of selecting material by diameter alone.

Bright Surface

The standard surface is bright.

Surface requirements should be evaluated together with the forming equipment, die design, lubrication system and subsequent finishing process.

Standard Options

The wire can be supplied according to JIS, EN, ASTM, DIN, GB or equivalent requirements, subject to specification confirmation.

Quality Control

For stainless steel cold heading wire, product quality should be evaluated through measurable technical requirements.

Depending on the order specification, inspection may include:

• Chemical composition verification

• Wire diameter measurement

• Dimensional tolerance inspection

• Surface inspection

• Tensile strength testing

• Delivery condition verification

• Material certificate

• Inspection report

For customized orders, the required material grade, diameter, tensile strength, delivery condition, surface and applicable standard should be confirmed before production.

How to Select Stainless Steel Cold Heading Wire

1. Select the Material Grade

Choose 302CHQ, 304HQ, 304 or 430 according to the required forming characteristics, mechanical properties, corrosion requirements and final application.

2. Confirm the Wire Diameter

The available diameter range is 0.15–12mm.

The wire diameter should correspond to the blank size and finished component design.

3. Define the Delivery Condition

Soft and semi-soft conditions are available.

The appropriate condition depends on the amount of deformation and the number of forming operations required.

4. Specify Mechanical Requirements

Provide the required tensile strength or other mechanical requirements together with the material grade, diameter and delivery condition.

5. Confirm the Forming Process

The required wire specification should be evaluated according to the actual cold heading or cold forming process, including die geometry, deformation level, lubrication and number of forming stages.

6. Confirm the Surface

The standard surface is bright. Surface requirements should be considered together with lubrication and subsequent processing.

Packaging and Supply

The stainless steel wire can be supplied in coils or special packing with a plate.

The coil inner diameter is available from 250–1000mm, subject to wire size and production requirements.

Packaging specifications can be confirmed according to the customer's handling, production and transportation requirements.

Frequently Asked Questions

What is 302CHQ stainless steel wire used for?

302CHQ stainless steel wire is commonly used for cold heading, cold forming, screws, fasteners, rivets and other formed components.

What is the difference between 302CHQ and 304HQ?

Both are stainless steel grades used for cold forming applications. The appropriate grade should be selected according to the required forming characteristics, mechanical properties, component design and service environment.

What diameter range is available?

The available diameter range is 0.15–12mm.

Can tensile strength be customized?

Yes. Tensile strength requirements can be specified according to the selected grade, diameter, delivery condition and intended application.

What delivery conditions are available?

The wire can be supplied in soft or semi-soft conditions according to the forming requirements.

What surface is available?

The standard surface is bright. Other surface requirements should be confirmed according to the production process.

What products can be made from stainless steel cold heading wire?

Typical products include screws, bolts, nuts, rivets, pins, studs, washers and other cold-formed stainless steel components.

Information Required for a Customized Order

For technical evaluation and quotation, provide:

Material Grade + Wire Diameter + Tensile Strength + Delivery Condition + Surface + Applicable Standard + Quantity + Application + Packaging Requirement

This information helps determine the appropriate stainless steel wire specification for the customer's cold heading or cold forming process.