SPRING WIRE

From cost-efficient carbon steel to specialised nickel alloy, our spring wire delivers lasting performance.
CONTACT US TO FIND OUT MORE

SPRING WIRE

From cost-efficient carbon steel to specialised nickel alloy, our spring wire delivers lasting performance.

CONTACT US TO FIND OUT MORE

Supplying High-Performance Spring Wire Solutions

As a trusted Industrial Spring Wire supplier in South Africa, we partner with manufacturers, engineers, and OEMs to deliver custom engineering wire solutions that meet exacting tensile strength, fatigue resistance, and corrosion performance standards. Our spring wire is sourced to ISO 9001 certified standards, ensuring consistent performance and reliability and can be supplied in bulk or small-batch quantities.

With a wide selection of alloys, including copper, nickel, and phosphor bronze, we deliver tailored solutions to meet the specific requirements of your application. Whether for industrial machinery, automotive components, or precision mechanical parts, our spring wire is backed by full traceability and the technical expertise to support your production needs.

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Spring Types

Explore Our Comprehensive

Spring Wire Range

We supply spring wire in five main material categories, each engineered for specific mechanical loads, environments, and life cycle requirements. Whether you are producing automotive suspension springs, heavy-duty mining equipment springs, or precision mechanical components, we offer the grade, finish, and format that ensure reliable manufacturing and long service life.

Carbon Steel Spring Wire

The most widely used spring wire material, carbon steel, offers an excellent strength-to-cost ratio. Available in hard-drawn for standard use or patented-drawn and phosphate coated for enhanced fatigue resistance and surface quality.

Performance Benefits:

  • Wide tensile strength range from low to ultra-high (“music”/“piano” wire)
  • Multiple finishes: black, grey phosphate, zinc, copper, tin, nickel
  • Excellent forming properties for springs, clips, and shaped parts

Common Variants: brass plated, copper plated, hard drawn, induction heated & tempered (IHTW), oil tempered, patented drawn phosphated, patented drawn polished, tin plated, zinc plated/galvanised.

Alloy Steel Spring Wire

Engineered for demanding dynamic applications, our alloy steel spring wire is enhanced with silicon, chrome, or vanadium for superior fatigue life and strength retention. Available in oil hardened and tempered (OHT) or induction hardened and tempered (IHT) options, it is widely used in valve springs, axle springs, and other components requiring continuous dynamic performance.

Applications:

  • Automotive and industrial engine valve springs
  • Heavy-duty axle springs for transport and machinery

Variants: Induction Heated & Tempered (IHTW), Oil Tempered Alloy Steel

Stainless Steel Spring Wire

For applications exposed to moisture, humidity, or mineral salts, stainless steel spring wire delivers the corrosion resistance required for long service life. The most widely used grade is AISI 302 (1.4310), while AISI 316 (1.4401) and 17/7PH (1.4568) are chosen for enhanced resistance in harsher environments, and for applications operating at elevated temperatures up to 300 °C.

Applications:

  • Marine equipment, food & beverage processing, chemical handling

Finishes:

  • Bright, dull (soap-coated), nickel-coated bright, nickel-coated dull, and straightened

Copper Alloy Spring Wire

Ideal for applications requiring electrical conductivity, soldering ability, and non-sparking properties. Options include Phosphor Bronze, Beryllium Copper.

High copper alloys are selected for springs used in gaseous or flammable environments, where their non-sparking properties are essential for safety. Monel® K500 is a common choice for these specialised applications.

Applications:

  • Electrical & electronic components, Springs for gas/flammable environments

Nickel Alloy Spring Wire

For the most demanding environments, nickel alloy spring materials provide exceptional resistance to both extreme temperatures and corrosion. While highly specialised and more costly, they are essential in safety-critical applications. Commonly specified grades include Inconel® 718, Inconel® X750, Nimonic® 80A, and Nimonic® 90.

Applications:

  • Gas turbines, Aerospace components, Nuclear reactors

Technical Specifications

Through our manufacturing partners and associates in the spring design sector, NOCKERS ENGINEERING PRODUCTS can assist with material selection, specification clarification, and supply for almost any spring application.
Stainless Steel Spring Wire
Unalloyed Carbon Steel Spring Wire
Oil Hardened & Tempered Spring Steel Wire to EN 10270-2: 2001 
Spring Wire Grades
Oil Hardened & Tempered Spring Steel Wire to EN 10270-2: 2001 
Chemical Composition

Oil Hardened & Tempered Spring Steel Wire to EN 10270-2: 2001 
Tensile Strength for Wire Grades TDC, TDCrV, TDSiCr, VDC, VDCrV & VDSiCr
Oil Hardened & Tempered Spring Steel Wire to EN 10270-2: 2001
Tensile Strength for Wire Grades FDC, FDCrV & FDSiCr
Stainless Steel Spring Wire
100%
Unalloyed Carbon Steel Spring Wire
100%
Oil Hardened & Tempered Spring Steel Wire
EN 10270-2: 2001 Spring Wire Grades
100%
Oil Hardened & Tempered Spring Steel Wire
EN 10270-2: 2001 Chemical Composition
100%
Oil Hardened & Tempered Spring Steel Wire
EN 10270-2: 2001 Tensile Strength for Wire Grades TDC, TDCrV, TDSiCr, VDC, VDCrV & VDSiCr
100%
Oil Hardened & Tempered Spring Steel Wire
EN 10270-2: 2001 Spring Wire GradesEN 10270-2: 2001 Tensile Strength for Wire Grades FDC, FDCrV & FDSiCr
100%

Why Choose Us

30 years of proven expertise supplying the South African industry
ISO-certified quality assurance for every order
Custom packaging, sizes, and sourcing to match your exact needs
Trusted by mining, manufacturing, and engineering leaders across Southern Africa

Why Choose Us

30 years of proven expertise supplying the South African industry
ISO-certified quality assurance for every order
Custom packaging, sizes, and sourcing to match your exact needs
Trusted by mining, manufacturing, and engineering leaders across Southern Africa

Speak to our Wire Specialists

Contact NOCKERS ENGINEERING PRODUCTS to source the right grade, finish, and supply format for your project.
CONTACT US TODAY
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