Product Specification

1.8mm 304H Soap-Coated Bright Stainless Steel Spring Wire

Product Introduction

1.8mm 304H Soap-Coated Bright Stainless Steel Spring Wire is austenitic stainless steel wire designed for spring manufacturing and other wire-forming applications requiring controlled diameter, suitable surface condition, and defined mechanical properties.

This spring wire is manufactured from 304H stainless steel and supplied in a nominal 1.8mm diameter. The surface can be supplied in soap-coated or bright finish, depending on the forming process and application requirements.

304H is a higher-carbon version of the 304 stainless steel family. Its controlled chemical composition makes it suitable for applications where the material grade and processing condition need to be clearly specified.

For stainless steel spring wire, ASTM A313/A313M is a relevant technical reference for stainless steel round spring wire used in spring manufacturing. The standard covers requirements related to chemical composition, tensile strength and mechanical testing of applicable spring wire grades.

Product Specifications

Note: Tensile strength, dimensional tolerance, surface condition and other mechanical requirements should be confirmed according to the customer's drawing, applicable standard and spring manufacturing process.

Why Choose 304H Stainless Steel Spring Wire?

Defined 304H Material Grade

304H belongs to the 304 stainless steel family and is characterized by a controlled higher carbon content compared with standard 304. When selecting spring wire, specifying the exact grade helps buyers match the material with their manufacturing process and service conditions.

1.8mm Diameter for Spring Manufacturing

The 1.8mm diameter provides a clearly defined starting specification for spring manufacturers. Final suitability should be evaluated together with spring geometry, coil diameter, forming method, required tensile strength and working conditions.

Soap-Coated Surface for Wire Forming

A soap-coated surface can be selected where lubrication during wire forming is required. Surface selection should be matched to the customer's spring coiling equipment, forming process and subsequent cleaning or finishing requirements.

Bright Surface Option

Bright-finish wire is available for applications where the surface appearance and cleanliness of the wire are important. The required surface condition should be confirmed before production according to the customer's processing requirements.

Applications

Compression Springs

1.8mm 304H stainless steel spring wire can be considered for compression spring production where stainless steel material is required.

Torsion and Extension Springs

The wire can also be used as a material option for torsion springs, extension springs and other formed spring components, subject to the required mechanical properties and spring design.

Wire-Formed Components

Beyond conventional springs, stainless steel spring wire can be used for selected wire-formed components where the material grade, diameter and surface condition meet the application requirements.

Material and Quality Considerations

For industrial spring wire, product selection should not be based on diameter alone. Buyers should confirm the following technical parameters before ordering:

• Stainless steel grade and material designation

• Nominal wire diameter and dimensional tolerance

• Tensile strength or required mechanical condition

• Surface finish and coating type

• Applicable standard

• Spring forming process

• Required coil diameter and spring geometry

• Service temperature and operating environment

• Subsequent cleaning, heat treatment or surface treatment requirements

This parameter-based approach helps spring manufacturers select wire according to actual production requirements rather than relying only on the product name.

Quality Control and Production Information

For B2B spring-wire procurement, quality documentation can be used to verify whether the supplied wire matches the agreed specification.

Depending on the order requirements, relevant quality documentation may include:

• Material specification

• Diameter and dimensional inspection

• Mechanical property inspection

• Surface inspection

• Chemical composition documentation

• Mill Test Certificate (MTC), when required

ASTM A313/A313M includes mechanical testing provisions for applicable stainless steel spring wire, including tensile strength and other tests used to evaluate wire performance.

How to Select the Right Stainless Steel Spring Wire

Before purchasing 1.8mm stainless steel spring wire, buyers should provide the spring manufacturer or wire supplier with the following information:

1. Required stainless steel grade

2. Wire diameter

3. Tensile strength or temper requirement

4. Surface finish

5. Spring type

6. Spring dimensions

7. Working temperature

8. Corrosive or environmental conditions

9. Applicable standard

10. Required quantity and coil weight

This information allows the wire specification to be matched more accurately with the customer's spring production process.

FAQ

What is 1.8mm 304H stainless steel spring wire used for?

It is primarily intended for spring manufacturing and can also be considered for selected wire-forming applications where 304H stainless steel and a 1.8mm diameter are required.

What surface finishes are available?

The product can be supplied with a soap-coated or bright surface, depending on the customer's forming process and surface requirements.

Is 304H the same as 304 stainless steel?

304H belongs to the 304 stainless steel family but has a controlled higher carbon content. The exact material designation should therefore be specified when placing an industrial wire order.

What information should be confirmed before ordering?

The key parameters include material grade, diameter, tolerance, tensile strength, surface finish, applicable standard, spring design and service conditions.

Technical Support for Spring Wire Selection

Choosing stainless steel spring wire requires consideration of material grade, diameter, mechanical properties, surface condition and forming requirements together.

For a 1.8mm 304H stainless steel spring wire order, buyers can provide their spring drawing, required tensile strength, surface requirement and applicable standard for specification review before production.