Product Specification

High Tensile Strength 0.85mm 302 Stainless Steel Spring Wire for Compression, Torsion and Extension Springs

Product Introduction

0.85mm 302 Stainless Steel Spring Wire is a fine-diameter stainless steel wire designed for spring manufacturing and formed-wire applications requiring a combination of controlled mechanical properties and corrosion resistance.

Made from AISI 302 stainless steel, this spring wire has a nominal diameter of 0.85 mm and is available in a high-tensile-strength condition according to the specified production requirements.

The 0.85 mm diameter makes this wire suitable for applications where a relatively fine spring wire is required, including compression springs, extension springs, torsion springs, and other small mechanical spring components.

For spring manufacturers, wire diameter and tensile strength should be evaluated together with spring geometry, forming method, working load, and service environment. Selecting the correct wire specification helps ensure that the material is suitable for the intended spring-making process.

Product Specifications

Key Features of 0.85mm 302 Spring Wire

Fine 0.85mm Wire Diameter

The 0.85 mm nominal diameter is suitable for spring applications requiring a relatively fine stainless steel wire.

Wire diameter is a fundamental parameter in spring design because it affects spring geometry, coil dimensions, load characteristics, and forming requirements. Therefore, the required diameter tolerance should be confirmed according to the spring design and applicable product specification.

AISI 302 Stainless Steel

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

For spring applications, the material grade should be selected according to the required mechanical properties, corrosion environment, forming process, and final application rather than diameter alone.

High Tensile Strength Condition

This 0.85 mm spring wire is supplied in a high-tensile-strength condition according to the specified product requirements.

For spring manufacturers, tensile strength is an important mechanical parameter because it needs to be considered together with wire diameter, spring index, forming process, working load, and service conditions.

A higher tensile strength should not automatically be interpreted as better for every spring. The appropriate tensile strength depends on the finished spring design and manufacturing process.

Applications

Compression Springs

0.85mm 302 stainless steel spring wire can be used for compression spring manufacturing where the spring is designed to resist compressive loads.

Typical applications include mechanical assemblies, electrical components, instruments, industrial equipment, and small spring mechanisms.

Torsion Springs

The wire can be formed into torsion springs for applications requiring rotational force or torque.

For torsion spring production, wire diameter should be evaluated together with coil diameter, leg configuration, forming conditions, and required operating torque.

Extension Springs

The wire is also suitable for extension spring applications where the finished spring operates under tensile loading.

The final selection should consider the spring's required load, extension, geometry, and working environment.

Small Mechanical Springs

The 0.85 mm diameter is also suitable for various small and precision-oriented spring components where stainless steel wire is preferred.

Potential applications include:

• Mechanical assemblies

• Electrical and electronic components

• Instruments

• Small machinery

• Automotive components

• General industrial spring components

Technical Factors to Consider When Selecting 0.85mm Spring Wire

When purchasing stainless steel spring wire, buyers should provide more than the material grade and diameter.

Important specifications include:

• Stainless steel grade

• Wire diameter

• Diameter tolerance

• Tensile strength

• Surface condition

• Spring temper

• Spring type

• Forming method

• Working load

• Operating environment

• Applicable standard

• Required packaging

For small-diameter spring wire, dimensional control and mechanical-property requirements should be confirmed before production, particularly when the wire will be processed by automatic spring-forming equipment.

Quality Control and Applicable Standards

Stainless steel spring wire can be specified according to recognized technical standards such as ASTM A313/A313M, depending on the customer's requirements.

ASTM A313/A313M covers austenitic and age-hardenable stainless steel round spring wire intended for spring manufacturing. The specification addresses chemical composition and tensile-strength requirements and includes mechanical tests such as wrap, uniformity, and bend testing.

For an actual order, the applicable standard, material grade, diameter tolerance, tensile-strength range, surface condition, and testing requirements should be confirmed before production.

This specification-based approach provides a clearer basis for evaluating stainless steel spring wire than using general descriptions such as "high quality" or "high performance."

Why Choose TOPONE Wire?

TOPONE Wire supplies stainless steel wire for industrial manufacturing applications, including stainless steel spring wire, annealed wire, EPQ wire, and customized stainless steel wire products.

For 0.85mm 302 stainless steel spring wire, customers can specify the required material grade, diameter, tensile strength, surface condition, quantity, packaging, and applicable standard.

The product specification can therefore be matched to the customer's spring manufacturing process and application requirements.

FAQ

What is 0.85mm 302 stainless steel spring wire used for?

0.85mm 302 stainless steel spring wire can be used to manufacture compression springs, torsion springs, extension springs, and other small mechanical spring components.

Why is 302 stainless steel used for spring wire?

AISI 302 is an austenitic stainless steel grade commonly used for stainless steel spring wire. Its material characteristics make it suitable for many spring and formed-wire applications.

Is 0.85mm suitable for small springs?

The 0.85 mm diameter is a relatively fine wire size and can be considered for small spring components. Final suitability depends on spring geometry, required load, forming process, and working conditions.

What should I specify when ordering 0.85mm spring wire?

The main specifications include material grade, diameter, diameter tolerance, tensile strength, surface condition, spring temper, quantity, packaging, applicable standard, and intended application.

Can 0.85mm 302 wire be used for torsion springs?

Yes. 0.85mm 302 stainless steel spring wire can be considered for torsion spring manufacturing. The final wire specification should be evaluated together with coil diameter, leg geometry, forming process, and required torque.