Zn-Al 85/15 Spray Wire 3.17 mm

Why Zn-Al 85/15 Alloy for Thermal Spray Coatings

Zn-Al 85/15 is widely specified for corrosion protection in industrial, marine, and infrastructure environments. The 85% zinc content provides active cathodic (galvanic) protection—sacrificing itself to shield the steel substrate even when the coating is scratched or damaged. The 15% aluminum adds a harder, more durable passive oxide layer that slows the consumption rate of the zinc, extending the service life of the coating compared to pure zinc wire in many atmospheric exposure conditions.

This alloy is commonly applied by electric arc spray or combustion flame spray processes onto bridges, offshore platforms, storage tanks, wind turbine towers, ductile iron pipes, and structural steel fabrications. The 3.17 mm diameter is a standard size compatible with most industrial arc spray systems and heavy-duty flame spray guns.

Practical Selection and Application Notes

When evaluating Zn-Al 85/15 wire for your coating project, consider these practical factors:

• Spray process compatibility: This wire is suitable for both arc spray and flame spray systems. Confirm your gun setup, drive rollers, and tip/nozzle configuration accept 3.17 mm (1/8 inch) wire before ordering.
• Coating thickness targets: Typical dry film thickness (DFT) for Zn-Al 85/15 coatings ranges from 80 to 200 microns per application pass, depending on spray parameters and job specifications. Discuss your DFT requirement with our team for feed-rate guidance.
• Surface preparation: For optimal bond strength, the substrate should be cleaned to Sa 2.5 (near-white metal blast) per ISO 8501-1 or SSPC-SP 10. SPA2Z also supplies abrasive media and blasting spares—ask about a combined supply package.
• Pack selection: Choose between 15 kg, 20 kg, or 25 kg spools for continuous-feed production environments, or coil packs for shorter runs and job-shop flexibility. Spool dimensions and hub details are confirmed on enquiry.

About SPA2Z — Zn-Al 85/15 Spray Wire Supply

SPA2Z supports industrial coating applicators, maintenance teams, and procurement buyers who need consistent-quality Zn-Al 85/15 spray wire in 3.17 mm diameter. We supply this alloy wire in multiple pack formats—15 kg, 20 kg, and 25 kg spools, plus coil packs—so you can match the packaging to your production setup without paying for handling you don't need.

Because thermal spray wire performance depends on the right alloy grade, diameter, and process fit, we work with you to confirm compatibility before quoting. Whether you're running arc spray or flame spray equipment, coating structural steel, or protecting pipework against corrosion, our team helps you specify the correct wire and pack configuration. From there, we provide a clear commercial quotation and delivery timeline—no guesswork, no generic catalog push.

Need to combine your wire order with surface preparation abrasives, blasting nozzles, or spray gun spares? SPA2Z supplies the full range, helping you consolidate procurement and reduce supplier follow-up.