Electro-Galvanized Steel (EG) Coil, Sheet & Plate | Zero-Spangle Supplier | ASTM A879, EN 10346
Huaxiao-Alloy’s Electro-Galvanized Steel (EG) delivers ultra-uniform zinc coatings (5–20µm) via electrolytic deposition – achieving 50% tighter thickness tolerances versus hot-dip galvanizing. Ideal for components demanding flawless aesthetics, conductivity, or paint adhesion.
TECHNICAL SPECIFICATIONS OF ELECTRO-GALVANIZED STEEL COIL/SHEET/ PLATE
| Parameter | Huaxiao-Alloy EG Steel | Industry Standards |
|---|---|---|
| Coating Mass | 20–180 g/m² (e.g., EZ20, EZ60, EZ180) | ASTM A879 / JIS G3313 |
| Surface Finish | Zero-spangle/satin finish (Ra 0.4–1.2µm) | EN 10346 (DX51D-DX54D) |
| Base Material | CQ, DQ, DDQ, HSS (250–800 MPa) | ASTM A1008 |
| Thickness Range | Coil: 0.3–3.0mm | Plate: 1.0–10.0mm (±0.03mm) |
| Passivation | Cr(VI)-free trivalent chromate (RoHS/REACH) | ISO 17073 |
Critical Advantages:
- Coating Uniformity: 95% Zn distribution ±1.5g/m² → critical for e-coating
- Superior Paint Adhesion: ≤1% peel-off vs. 5–15% for HDG (ASTM D3359)
- Weldability: Low iron-zinc alloy layer → reduced electrode wear
- Conductivity: Stable surface resistance (0.5–5.0 Ω/sq)
APPLICATIONS & HUAXIAO SOLUTIONS
| Industry | Key Components | Recommended EG Product |
|---|---|---|
| Automotive | Body panels, fuel tanks | DX54D+ZE75: 75g/m² coating, IF steel for deep drawing |
| Appliances | Washer drums, control panels | EZ60 (CQ): Satin finish, RoHS passivation |
| Electronics | Chassis, server racks | EZ120-HSS: 350 MPa strength, EMI shielding |
| HVAC | Ducting, vents | EZ40-SS Grade: Seamless forming, low Zn fumes |
HUAXIAO-ALLOY VS. TRADITIONAL ELECTRO-GALVANIZED STEEL COIL/SHEET/ PLATE
| Factor | Standard HDG | Huaxiao EG Steel |
|---|---|---|
| Coating Consistency | Thickness variation ±15% | ±5% tolerance (laser-scanned QC) |
| Salt Spray Resistance | 100–150 hrs @ 20µm coating | 240–400 hrs @ 20µm (ASTM B117) |
| E-Coating Performance | Ω fluctuation ±35% | Stable Ω (±3%) for uniform deposition |
| EMI/RFI Shielding | Limited (rough surface) | Optimized (Ra 0.4µm surface) |
WHY HUAXIAO-ALLOY FOR ELECTRO-GALVANIZED STEEL COIL/SHEET/ PLATE?
- Mill Partnerships: JFE Steel, Nippon Steel, Tata BlueScope
- Advanced Lines: Continuous electrolytic coating (CEC) + IR temper rolling
- Testing Rigor: Salt spray, T-bend, adhesion tests per ASTM/ISO
- Global Compliance: IATF 16949 automotive, IECQ QC080000 electronics
- Sustainability: ≤0.5 g/m² hexavalent chrome alternatives
Case: German auto OEM achieved 30% scrap reduction switching to Huaxiao’s EG for door panels.
Engineer Perfection:
➤ Request EG vs. HDG Cost-Benefit Analysis
➤ Download Surface Finish Standards (IEC/ASTM)
➤ Get EG Samples (Include Coating Weight/Finish Spec)
[ACCESS COMPARISON TOOL] • [REQUEST SAMPLES] • [CONSULT AUTO SPECIALIST]
FAQs: ELECTRO-GALVANIZED STEEL COIL/SHEET/ PLATE
A: ≥20 g/m² with chromate passivation (≥240 hrs ASTM B117). Huaxiao offers EZ30 for indoor applications.
A: No – EG is barrier protection only. Specify organic-coated EG (OEG) or edge sealing for critical edges.
A: Superior to HDG: Low Fe-Zn layer → 50% longer electrode life. Use Br-Cu electrodes for ≥25,000 welds.
A: Yes – Huaxiao’s Cr(VI)-free passivation meets RoHS Annex XVII/REACH SVHC. Options: Trivalent chrome, silane, graphene nano-coatings.
A: 3 non-destructive methods:
- X-ray fluorescence (XRF)
- Coulometric dissolution (ISO 2177)
- Magnetic induction (ASTM B499)
Per-coil certification provided.
A: 12 working days for coils ≤2,000mm width (slit-to-order), ±0.5mm tolerance.
Hot-Dip Galvanized Steel Coil, Sheet & Plate | ASTM A123/A767 Supplier
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