Zn-Al Alloy Wire

Product NameZn-Al Alloy Wire (85/15 Zn-Al Thermal Spray Wire)
Diameter1.6mm / 2.0mm / 2.5mm / 3.0mm / 3.17mm / 4.76mm
CompositionZn 85% + Al 15% (standard); Zn 95% + Al 5%; Zn 50% + Al 50%
PackageSpool (10-15kg) / Coil (50-200kg)
Melting Point~440°C (Zn85Al15) / ~382°C (Zn95Al5)
StandardISO 14919, AWS C2.25/C2.25M, ASTM B833
Grade8515 (Zn85Al15), 9505 (Zn95Al5)
MOQ100kg

Product Description

Zinc-Aluminum alloy wire (8515: 85% Zn + 15% Al) is a premium thermal spray wire designed for long-term corrosion protection of steel structures. The addition of 15% aluminum to the zinc matrix significantly enhances corrosion resistance compared to pure zinc wire — providing 2-3× longer service life in marine and industrial environments. The Zn-Al coating acts as both a barrier layer and a sacrificial anode, self-healing scratches and damaged areas.

Widely used for thermal spray (arc spray / flame spray) metallizing of bridges, offshore platforms, wind towers, ship hulls, pipelines, storage tanks, and structural steel exposed to aggressive environments. Available in precision-layer-wound spools for smooth, snag-free feeding in automated spray systems.

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Important Attributes

AttributeSpecification
Product NameZinc-Aluminum Alloy Thermal Spray Wire
Standard Diameters1.6mm (1/16"), 2.0mm, 2.5mm, 3.0mm, 3.17mm (1/8"), 4.76mm (3/16")
Alloy Composition8515: Zn 84-86% + Al 14-16% | 9505: Zn 94-96% + Al 4-6% | Zn50Al50: Zn 48-52% + Al 48-52%
Melting Range440-460°C (8515), 382-420°C (9505)
Density~5.7 g/cm³ (8515)
Tensile Strength110-160 MPa
Package OptionsPrecision spool (10-15kg, plastic/metal), coil (50-200kg), drum (250-350kg)
StandardISO 14919:2015, AWS C2.25/C2.25M, ASTM B833, NORSOK M-501, EN ISO 2063
Coating Hardness40-60 HV (as-sprayed Zn85Al15 coating)
Corrosion Life20-50+ years in C3-C5 environments (ISO 12944), 2-3× pure zinc
Spray MethodArc spray (twin wire) / Flame spray (single wire) / HVOF
InspectionChemical analysis (OES), diameter tolerance, tensile test, surface quality, spool winding (layer-wound, no tangles), certificate of analysis
ApplicationOffshore platforms & wind towers, bridges & infrastructure, ship hulls & marine structures, pipelines & storage tanks, steel structures in C4-C5 corrosive environments, concrete rebar protection
MOQ100kg
Supply Ability500+ Tons/month
Delivery Time7–15 days
Price TermFOB / CIF / CFR
PaymentT/T, L/C

Quality & Packaging

ISO 9001 certified. Chemical analysis per heat (OES/ICP), diameter (laser micrometer continuous monitoring), tensile per ASTM E8, layer-wound quality (no cross-overs, smooth payoff). Certificate of Analysis per EN 10204 3.1 with each batch.

Packaging: Spools: precision layer-wound on plastic/metal spools (DIN 300/DIN 400), individually vacuum-sealed with desiccant, 20-50 spools per carton on pallet. Coils: VCI anti-corrosion paper + PE film, steel strapped. Drums: sealed fiber/steel drums. All export packaging moisture-protected.

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