Elector-galvanized wire (EG wire) is carbon steel wire coated with a thin layer of zinc through an electrolytic process.

Elector-galvanized wire (EG wire) is carbon steel wire coated with a thin layer of zinc through an electrolytic process. This coating protects the base metal from corrosion, enhances durability, and provides a smooth, bright finish.

CREDIT

1. Material

 Base Metal: Low-carbon steel wire rod (typically ASTM A641, ISO 7989-1, or equivalent).

 Coating: High-purity zinc (99%+), applied electrolytic-ally.

 Coating Mass: Typically 5–50 g/m² (thinner than hot-dip galvanizing).

 Surface: Smooth, uniform, and bright/silver-gray. Ideal for applications requiring aesthetics.

 Corrosion Resistance: Moderate protection (suited for indoor/mild environments).

2. Production Process

The elector-galvanizing process involves:

1. Wire Drawing:

 Steel wire rod is drawn through dies to achieve the target diameter.

2. Cleaning & Pretreatment:

 Alkaline degreasing → Acid pickling (HCl/H₂SO₄) → Rinsing → Fluxing.

3. Electroplating:

 Wire passes through an electrolyte bath (zinc sulfate/cyanide solution).

 Acts as the cathode; zinc anodes dissolve via electrolysis.

 Zinc ions bond to the wire surface under electric current.

4. Rinsing & Drying:

 Removes residual chemicals; wire is dried.

5. Passivation (Optional):

 Chromate or non-chromate treatment to enhance corrosion resistance (e.g., blue, yellow, or clear passivate).

6. Spooling/Coiling:

Finished wire is wound onto spools or coils.

3. Common Sizes & Models

Parameter

Common Specifications

Diameter

0.15 mm – 4.0 mm (0.006" – 0.157")

Tensile Strength

350–1000 N/mm² (soft, medium, hard temper grades)

Coil Weight

5 kg – 500 kg (standard), custom up to 1,000 kg+

Zinc Coating

Class A: 5–20 g/m²; Class B: 20–50 g/m²

Typical Models by Diameter:

 Ultra-Fine: 0.15–0.5 mm (jewelry, electronics)

 Fine: 0.5–1.2 mm (crafts, mesh, binding)

 Medium: 1.2–2.5 mm (fencing, hooks, springs)

 Heavy: 2.5–4.0 mm (construction, agriculture)

Key Applications

 Binding & Tying: Securing rebar, baling hay.

 Mesh & Screens: Insect screens, filters.

 Fencing: Chain link, poultry netting.

 Fasteners: Nails, staples, springs.

 Crafts & DIY: Beading, sculptures.

Standards & Certifications

 ASTM A641: Standard for zinc-coated steel wire.

 ISO 7989-1: Electrolytically zinc-coated carbon steel wire.

 JIS G 3543: Japanese industrial standard.