Stainless 420 Spray Wire 1.6 mm

Material Profile: Stainless Steel 420

Grade 420 is a martensitic stainless steel with higher carbon content than 304 or 316 grades, which allows it to be hardened by heat treatment. In its as-sprayed form, a 420 coating is typically hard and exhibits good compressive strength. The coating can then be machined or ground to achieve precise dimensional tolerances and a smooth surface finish.

This wire is commonly selected for rebuilding worn shafts, rolls, and other machinery parts where the original component was made from a hardenable steel. The coating provides a balance of hardness and corrosion resistance that suits mild to moderate service environments. It is not recommended for severe acid exposure or high-temperature oxidation, where a 300-series stainless or nickel-based wire would be more appropriate.

Spray Process Compatibility

Stainless 420 wire in 1.6 mm diameter is suitable for both electric arc spray and oxy-fuel flame spray systems. In arc spray, two wires are fed simultaneously to create a molten spray stream with high bond strength and deposition rates. In flame spray, the wire is melted by an oxy-fuel flame and atomized by compressed air. The 1.6 mm diameter offers a good balance between feedability and melt rate for most industrial guns.

We recommend confirming the exact wire diameter tolerance and surface finish requirements with your spray equipment manufacturer. SPA2Z can provide a sample length for trial runs before you commit to a full production order.

Pack Options and Handling

This wire is available in standard spool sizes of 15 kg, 20 kg, and 25 kg, as well as coil packs for high-volume users. Spools are precision-wound to ensure consistent pay-off during spraying, reducing the risk of tangles or feed interruptions that can cause coating defects. Coil packs are suitable for workshops with dereeling equipment.

Store wire in a dry, covered area to prevent surface oxidation before use. While 420 stainless has better atmospheric corrosion resistance than plain carbon steel wire, keeping spools sealed in their original packaging until needed is good practice for maintaining the cleanest possible wire surface.

About SPA2Z — Your Source for Stainless 420 Spray Wire

SPA2Z supplies industrial coating wires to surface preparation and thermal spray professionals. When you enquire about Stainless 420 Spray Wire 1.6 mm, we focus on getting you the right grade, diameter, and pack configuration for your specific spray setup and coating job.

We understand that coating specifications vary between rebuild projects, OEM part repairs, and general wear-facing applications. Our team helps you verify wire chemistry, diameter tolerance, and spool fitment so you can order with confidence. Whether you need a single trial spool or regular bulk supply, we provide a straightforward quotation process and clear lead times.

• Grade 420 martensitic stainless steel wire for hard, machinable coatings
• 1.6 mm diameter for arc and flame spray processes
• Spool and coil pack options to match your production setup
• Quotation includes wire cost, packing, and delivery terms