Electro-Galvanized Steel Coil (EG Coil)
Electro-galvanized (EG) steel coil with a smooth, uniform zinc coating perfect for painting and stamping. Thickness 0.3-3.0mm. Grades SECC, DC01+ZE. Ideal raw material for appliances, computer cases, automotive parts. MTC provided.
| Material | Cold Rolled Steel with Electro-Deposited Zinc Coating |
|---|---|
| Grade / Standard | SECC / DC01+ZE / SPCC-SD |
| Thickness | 0.3mm - 3.0mm |
| Width | 600mm - 1500mm |
| Inner Diameter (ID) | 508mm / 610mm |
| Coil Weight | 3-10 Tons |
| Delivery Condition | hot_rolled / cold_rolled |
| Surface Treatment | galvanized / coated |
| MOQ | 10 Tons |
| Delivery Time | 15-30 Days |
| Loading Port | Tianjin / Shanghai / Qingdao |
Overview of Electro-Galvanized Steel Coil (EG Coil)
Electro-galvanized steel coil (EG), also known as Zintec, is a cold-rolled carbon steel coil coated with a pure layer of zinc through an electrolytic deposition process. Unlike hot-dip galvanizing, this method produces a very uniform, thin, and smooth zinc layer with no spangle, making it an ideal substrate for high-quality painting and finishing. Specified under standards such as JIS G3313 (SECC) and EN 10152 (DC+ZE), EG steel coil offers excellent formability, weldability, and a pristine surface finish, ready for downstream processing.
The electrolytic process allows for precise control over the coating thickness, which is typically much thinner than hot-dip coatings. This makes EG steel coil the material of choice for manufacturers in industries where aesthetics, paint adhesion, and dimensional precision are critical. It is the standard raw material for producing home appliances, computer casings, office furniture, and automotive interior parts.
Key Features and Surface Performance
Electro-galvanized steel’s primary advantages lie in its surface quality and processing characteristics:
– **Superior Surface Quality:** The electrolytic process creates an exceptionally smooth, dense, and spangle-free surface. This provides a perfect, uniform base for high-quality painting, powder coating, and lamination, resulting in a flawless final product without the risk of spangle pattern show-through.
– **Excellent Formability and Weldability:** The thin, uniform zinc layer has excellent adhesion and does not flake or peel during stamping, deep drawing, or complex bending operations. The pure zinc coating also provides good electrical conductivity, making it ideal for automated spot welding lines.
– **Uniform Coating Thickness:** The zinc layer has a precise and uniform thickness across the entire coil, ensuring consistent performance and appearance. Common coating weights range from 10 to 40 g/m² (total for both sides).
– **Advanced Surface Treatments:** EG coils are often supplied with post-treatments to enhance performance. These include phosphating (to improve paint adhesion), chromating (for better corrosion resistance), and clear anti-fingerprint (AFP) coatings.
Main Applications of EG Steel Coil
The superior surface finish of EG steel coil makes it indispensable as a raw material for a wide range of indoor and manufacturing applications:
– **Home Appliances:** It is fabricated into the outer casings of refrigerators, washing machines, microwaves, air conditioning units, and water heaters where a high-quality, smooth painted finish is required.
– **Electronics & IT:** EG steel coil is the standard material stamped and formed to create computer chassis (PC cases), server racks, printer frames, and other electronic enclosures.
– **Automotive:** It is used to produce numerous interior body panels, dashboards, door inners, oil filters, and other non-exposed structural parts where weldability and paintability are key requirements.
– **Furniture & Fixtures:** EG steel coil is a popular choice for manufacturing high-end office furniture, filing cabinets, shelving, and metal doors that require a durable and aesthetically pleasing paint or powder coat finish.
Why Choose Us for Electro-Galvanized Steel Coil
Shandong Tanglu Metal Material Co., Ltd. is a leading supplier of prime-quality electro-galvanized (EG) steel coils. We source our material from top-tier mills with advanced electrolytic galvanizing lines, ensuring a flawless, consistent surface finish. Each coil is subject to stringent quality control, including coating thickness verification using X-ray or coulometric methods, surface roughness tests, and paint adhesion tests to guarantee superior performance for your manufacturing processes.
We offer a comprehensive range of EG steel specifications, including grades like SECC and DC01+ZE, with various coating weights (e.g., ZE25/25) and surface treatments (phosphated, chromated, oiled, AFP). With extensive experience exporting to appliance, automotive, and electronics manufacturers worldwide, we provide reliable quality, competitive pricing, and full traceability with a Mill Test Certificate (MTC) for every coil.
📐 Dimension & Size Table
| Thickness (mm) | Width (mm) | Coil Weight (T) | Zinc Coating (g/m²) |
|---|---|---|---|
| 0.30-0.50 | 600-1250 | 3-8 | 10-20 |
| 0.50-0.80 | 600-1500 | 3-10 | 20-40 |
| 0.80-1.20 | 600-1500 | 3-10 | 20-40 |
| 1.20-2.00 | 800-1500 | 4-10 | 20-40 |
| 2.00-3.00 | 1000-1500 | 5-10 | 20-40 |
* Custom sizes available upon request. Tolerances per relevant international standards.
🔬 Chemical Composition
| Element | Min | Max | Display Value | Note |
|---|---|---|---|---|
| C | - | 0.12 | ≤0.12 | Base Metal: DC01 per EN 10130 |
| Mn | - | 0.60 | ≤0.60 | Base Metal |
| P | - | 0.045 | ≤0.045 | Base Metal |
| S | - | 0.045 | ≤0.045 | Base Metal |
| Zn (Coating) | 99.9 | - | ≥99.9% Pure Zinc | Electro-deposited coating |
* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.
⚙️ Mechanical Properties
| Property | Value | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength (DC01+ZE) | 270-410 | MPa | Base metal properties |
| Yield Strength (DC01+ZE) | ≤280 | MPa | Base metal properties |
| Elongation A80 | ≥28 | % | Base metal properties |
| Coating Adhesion (Paint) | Excellent | - | Cross-cut test after painting |
| Weldability | Excellent | - | Suitable for spot welding |
| Surface Finish | Smooth, Spangle-Free | Matte or Bright Finish |
* Values shown are minimum requirements unless otherwise stated.
📦 Commercial Information
| Packaging | Standard seaworthy export packing for EG steel coils. Coils are packed vertically (eye to sky), wrapped in waterproof paper and PE film, and then with a hardboard or steel outer protector. The package is secured with steel straps through the coil's eye and around its circumference. Edge protectors are used. Each coil is placed on a wooden pallet or steel skid and clearly tagged with all specification details. |
|---|---|
| Payment Terms | T/T (Telegraphic Transfer),L/C (Letter of Credit) |
| Price Term | FOB,CFR,CIF,EXW |
| Supply Capacity | 15,000 Tons/Month |
| Loading Port | Tianjin / Shanghai / Qingdao |
Why Choose Our Electro-Galvanized Steel Coil (EG Coil)?
Superior Paintable Surface
The perfectly smooth, uniform, and spangle-free surface provides an exceptional base for liquid paint, powder coating, and lamination, ensuring a flawless cosmetic finish on your manufactured products.
Excellent Formability & Weldability
The thin, tightly bonded zinc coating allows for complex forming and deep drawing without flaking. Its high purity ensures excellent spot weldability, crucial for automated assembly lines.
Precise & Uniform Coating
The electrolytic process allows for precise control over zinc coating thickness, ensuring consistent performance, predictable forming behavior, and tight dimensional tolerances for precision components.
Advanced Surface Treatments
Available with various post-treatments, including phosphating to maximize paint adhesion, chromating for enhanced corrosion resistance, and anti-fingerprint coatings for a clean finish.
Ideal for High-End Manufacturing
The definitive raw material for industries where aesthetics matter, including home appliances, consumer electronics, premium furniture, and automotive interior components.
🏭 Applications of Electro-Galvanized Steel Coil (EG Coil)
Electro-galvanized steel coil is engineered for manufacturers who demand a perfect finish. It is the primary raw material for the home appliance industry, used to stamp and form the pristine, painted shells of refrigerators, washing machines, and microwaves. In the world of electronics, it is fabricated into the sturdy and sleek chassis for PCs and servers. The automotive industry uses it to produce a multitude of interior parts that require precise forming and excellent paint adhesion. As a raw material, EG coil is the starting point whenever a perfect, paintable surface is required.
📋 Quality & Certification
Our Certifications
- ✅ ISO 9001:2015
- ✅ CE Marking
- ✅ ABS
- ✅ DNV GL
- ✅ Lloyd's Register (LR)
- ✅ Bureau Veritas (BV)
- ✅ SGS Certified
- ✅ NK
- ✅ RINA
Mill Certificate Type
- 📋 EN 10204 3.1
- 📋 EN 10204 3.2
- 📋 Original Mill Certificate
- 📋 Third Party Inspection Available
- 📋 Certificate of Origin
❓ Frequently Asked Questions
What is Electro-Galvanized (EG) Steel Coil?
Electro-galvanized (EG) steel coil is a continuous strip of cold-rolled steel that has been coated with a thin layer of pure zinc through an electrolytic plating process. The result is an extremely smooth, uniform, and spangle-free surface that is ideal for downstream processing like painting and stamping.
What is the main difference between Electro-Galvanized (EG) and Hot-Dip Galvanized (GI) Coil?
The main difference is the coating process and result. EG is made by electroplating, creating a thin, smooth, uniform zinc layer perfect for painting. GI is made by dipping steel in molten zinc, creating a thicker, less uniform coating with a crystalline 'spangle' pattern, which offers better corrosion resistance but is less ideal for cosmetic surfaces.
What is the difference between EG coil and EG sheet?
They are the same material, but in a different form. An EG coil is a long, continuous strip of electro-galvanized steel wound into a roll. An EG sheet is a single, flat piece that has been cut from an EG coil to a specific length. Coils are the primary raw material for manufacturers with their own cutting or stamping lines.
What does SECC mean?
SECC is a material grade designation from the Japanese Industrial Standard (JIS) G 3313. It stands for: S - Steel, E - Electro-galvanized, C - Cold-rolled, C - Commercial Quality. It is one of the most common grades for general-purpose electro-galvanized steel.
Why is phosphating a common treatment for EG coils?
Phosphating is a chemical conversion coating applied to the EG coil. It creates a micro-crystalline surface layer that dramatically improves the adhesion of subsequent paint or powder coating layers applied by the end-user. It also adds a degree of temporary corrosion resistance before the final finishing.
Get a Quote for
Electro-Galvanized Steel Coil (EG Coil)
Submit your requirements and receive a competitive price quote within 24 hours.
- ✓ Fast response within 24 hours
- ✓ Competitive factory-direct pricing
- ✓ Free technical consultation
- ✓ Mill test certificate provided
- ✓ Flexible payment terms available
⏱ Response within 24 hours
Send Your Inquiry
All fields marked with * are required