Zinc-Mg Alloy Wire
ZnMg — Advanced Coating Wire
Overview
Zinc-magnesium alloy wire for thermal spray coating delivers 3–5× better corrosion protection than pure zinc coatings — the advanced choice for long-life protection of steel infrastructure
Magnesium additions increase reactivity — store away from moisture; use appropriate PPE during spraying
Applications
Common Alloys
Properties
Manufacturing Process
Step 1
Alloy Batching
High-purity zinc and magnesium are batched in precise ratios (1–2 wt% Mg) to achieve target corrosion performance without embrittlement.
Step 2
Alloying & Casting
Mg added to molten zinc at 450–480 °C under controlled atmosphere to prevent Mg oxidation; alloy continuously cast into rod.
Step 3
Wire Drawing
Alloy rod drawn to final spray wire diameter (1.6–3.2 mm) through lubricated dies; controlled pass schedules prevent cracking from Mg-induced brittleness.
Step 4
Quality Verification
Mg content verified by ICP; wire bendability and surface finish checked — smooth, crack-free surface is essential for reliable arc-spray gun feeding.
Step 5
Spooling
Wire wound onto standard spray-gun compatible spools (15–25 kg); tension controlled to prevent coil unwinding during handling.
Step 6
Certification & Dispatch
Chemical analysis, tensile, and coating performance data issued per batch; safety data sheet and application guidelines supplied with each consignment.
Step 1
Alloy Batching
High-purity zinc and magnesium are batched in precise ratios (1–2 wt% Mg) to achieve target corrosion performance without embrittlement.
Step 2
Alloying & Casting
Mg added to molten zinc at 450–480 °C under controlled atmosphere to prevent Mg oxidation; alloy continuously cast into rod.
Step 3
Wire Drawing
Alloy rod drawn to final spray wire diameter (1.6–3.2 mm) through lubricated dies; controlled pass schedules prevent cracking from Mg-induced brittleness.
Step 4
Quality Verification
Mg content verified by ICP; wire bendability and surface finish checked — smooth, crack-free surface is essential for reliable arc-spray gun feeding.
Step 5
Spooling
Wire wound onto standard spray-gun compatible spools (15–25 kg); tension controlled to prevent coil unwinding during handling.
Step 6
Certification & Dispatch
Chemical analysis, tensile, and coating performance data issued per batch; safety data sheet and application guidelines supplied with each consignment.
Chemical Composition
Proprietary / EN 14919
Nominal composition. Balance: Zn.
| Alloy | Chem. Symbol | Zn | Mg | Pb | Cd | Fe | Cu | Al | — |
|---|---|---|---|---|---|---|---|---|---|
| ZnMg1 | ZnMg1 | Balance | ~1.0 | 0.003 | 0.003 | 0.002 | 0.001 | — | — |
| ZnMg2 | ZnMg2 | Balance | ~2.0 | 0.003 | 0.003 | 0.002 | 0.001 | — | — |