High-Tensile Stainless Steel Spring Wire, 0.4-2mm Diameter Options - Metal Wire

Match the diameter to the load and deflection requirements of your application. Thinner wire (0.4–0.6 mm) suits fine craft work, small coil springs, and light tensioning. Mid-range (0.8–1.2 mm) covers most DIY spring replacements and garden trellising. Heavier diameters (1.5–2.0 mm) are suited to mechanical linkages and structural tensioning where higher force is needed. When in doubt, size up one step — a slightly stiffer wire is easier to work with than one that yields under load.

The 304 spring-tempered wire has good tensile strength for light-to-medium structural tensioning (e.g., garden trellis wires, picture-hanging cables, and small mechanical linkages). For load-bearing structural applications requiring certified breaking-load data, please contact us to confirm suitability before ordering.

304 stainless steel offers solid corrosion resistance in most outdoor and damp environments, including coastal areas with moderate salt exposure. It will not rust under typical garden, workshop, or indoor conditions. For prolonged immersion in saltwater or highly chlorinated environments, 316-grade stainless would be a better choice — this product is 304 grade.

Thinner diameters (0.4–0.8 mm) can be coiled and bent by hand with standard pliers. Diameters of 1.0 mm and above benefit from a mandrel or coiling jig to maintain consistent coil diameter and avoid kinking. Spring-tempered wire has more spring-back than annealed wire, so allow for that when forming tight bends.

Spring-tempered wire is work-hardened during the drawing process, giving it higher tensile strength and elastic memory — it returns to its original shape after deflection. Annealed wire is softer and more ductile, making it easier to form but unsuitable for applications requiring spring-back. This product is spring-tempered and is the correct choice for coil springs, tensioners, and retaining clips.

Measure the total wire run you need, then add 10–15% for waste, test coils, and trimming. Length options range from 1 m to 100 m per variant. If your project requires multiple diameters, add each as a separate line item. Wire is supplied as a continuous length on a coil — it is not pre-cut into shorter segments within the selected length.

Yes. The round cross-section and consistent diameter are compatible with standard wire-bending pliers, coiling mandrels, and wire-forming jigs. For diameters above 1.5 mm, a bench-mounted coiling tool or vice is recommended to maintain control during forming. The wire can also be cut with standard wire cutters or bolt cutters depending on diameter.