GNEE Steel is a leading manufacturer and supplier of high-quality cold rolled steel, providing a wide range of DC01, DC02, and DC03 steel plates and coils with excellent precision, strength, and corrosion resistance. Our cold rolled galvanized steel products are designed to meet the needs of modern industries, including automotive, home appliances, metal furniture, electrical enclosures, and general metal fabrication.
What Are DC01/DC02/DC03 Cold Rolled Galvanized Steel Plates?
Base Material: Cold-rolled low-carbon steel (EN 10130 compliant) with "DC" designating "Deep Drawing" capability. The series is graded by formability, ductility, and precision:
- DC01: Basic general-purpose grade (entry-level deep drawing).
- DC02: Intermediate grade (improved formability vs. DC01).
- DC03: Advanced grade (high ductility for complex forming).
Galvanized Coating: A zinc layer applied via hot-dip galvanizing (GI) or electro-galvanizing (EG) per EN 10346 standard. The coating acts as a sacrificial anode, protecting the steel from corrosion in humid, outdoor, or harsh environments.
Core Advantage: Combines the cold-rolled steel's dimensional precision and workability with galvanizing's corrosion resistance-ideal for applications requiring both durability and shaping flexibility.
Key Differences: DC01 vs. DC02 vs. DC03 (Galvanized)
Chemical Composition (Base Steel, EN 10130)
All grades have low carbon content to ensure formability and weldability. Minor variations optimize performance:
| Element (wt%) | DC01 | DC02 | DC03 |
|---|---|---|---|
| Carbon (C) | ≤0.10% | ≤0.10% | ≤0.10% |
| Manganese (Mn) | ≤0.50% | ≤0.45% | ≤0.45% |
| Phosphorus (P) | ≤0.035% | ≤0.030% | ≤0.030% |
| Sulfur (S) | ≤0.035% | ≤0.025% | ≤0.025% |
| Aluminum (Al) | ≥0.020% (optional) | ≥0.020% | ≥0.020% |
Mechanical Properties (Annealed Base Steel + Galvanized)
Galvanizing slightly increases yield strength (due to zinc layer bonding) but preserves the base steel's formability:
| Property | DC01 | DC02 | DC03 | Significance |
|---|---|---|---|---|
| Yield Strength (ReH) | 130–250 MPa | 120–240 MPa | 120–240 MPa | Lower range = easier forming; DC02/DC03 offer more flexibility. |
| Tensile Strength (Rm) | ≥270 MPa | ≥270 MPa | ≥270 MPa | Consistent strength across grades; sufficient for most structural needs. |
| Elongation (A80mm) | ≥28% | ≥30% | ≥32% (premium ≥34%) | Key differentiator: Higher elongation = better deep drawing/complex shaping. |
| Plastic Strain Ratio (r-value) | ≥1.0 | ≥1.2 | ≥1.3 | Indicates resistance to thinning; critical for deep-drawing applications. |
| Hardness (HRB) | ≤65 | ≤65 | ≤65 | Ensures workability (stamping, bending) without tool wear. |
Galvanized Layer Specifications (EN 10346)
All grades use the same galvanizing process, with customizable coating thickness:
| Coating Type | Zinc Layer Weight (g/m²) | Corrosion Resistance | Application Scenario |
|---|---|---|---|
| Electro-Galvanized (EG) | 20–80 (single-sided) | Moderate (indoor) | Electronics, furniture, appliances |
| Hot-Dip Galvanized (GI) | 80–275 (single-sided) | High (outdoor/harsh) | Construction, automotive, outdoor equipment |
| Surface Treatment | Passivation (chromate-free) + oiling | Prevents white rust during storage | All applications |
Grade-by-Grade: Galvanized Advantages & Applications
Each grade's unique properties make it suitable for specific use cases-galvanizing expands their versatility by adding corrosion resistance.
DC01 Cold Rolled Galvanized Steel Plate
Core Strength: Cost-effective, basic formability, and galvanized corrosion resistance.
Key Advantages: Ideal for simple bending, stamping, and welding; lowest price in the series.
Typical Applications:
Construction: Lightweight brackets, roof panels, and wall cladding (GI for outdoor use).
Furniture: Simple metal frames, drawer slides, and hardware (EG for indoor use).
Appliances: Washing machine bases, refrigerator back panels (EG for rust prevention).
General Hardware: Nuts, bolts, and stamped parts (low-cost, high-volume production).
DC02 Cold Rolled Galvanized Steel Plate
Core Strength: Balanced formability and cost; improved ductility vs. DC01.
Key Advantages: Handles moderate deep drawing and complex bending without cracking.
Typical Applications:
Automotive: Non-critical components (e.g., wheel covers, interior brackets) with GI coating for undercarriage use.
Home Appliances: Oven door frames, air conditioner casings (EG for smooth surface + corrosion resistance).
Electrical: Junction boxes, control panel covers (GI for outdoor/industrial environments).
Metal Fabrication: Medium-complexity parts (e.g., curved handrails, decorative accents).
DC03 Cold Rolled Galvanized Steel Plate
Core Strength: Advanced deep-drawing capability + galvanized durability; top-tier in the series.
Key Advantages: Excels at complex shaping (e.g., deep drawn components) while resisting rust.
Typical Applications:
Automotive: Exterior trim, fuel tank brackets, and small body parts (GI for undercarriage/outer panels).
Precision Engineering: Electronic device housings (e.g., router casings, battery packs) with EG for indoor use.
Furniture: High-end curved frames, decorative metal accents (EG for sleek finish + rust prevention).
Outdoor Equipment: Garden tools, camping gear, and agricultural machinery parts (GI for harsh conditions).
Why Choose GNEE Steel?
High-Quality Materials: All DC01, DC02, and DC03 steel plates meet international standards.
Precision Manufacturing: Cold rolled and galvanized steel ensures smooth surfaces and dimensional accuracy.
Customized Solutions: Sheets and coils can be cut, coated, or processed according to customer specifications.
Global Supply Chain: We serve customers worldwide, including automotive, construction, appliance, and electrical industries.
Expert Support: Technical guidance for material selection, forming, and welding is available to optimize your production.
Conclusion
GNEE Steel's DC01, DC02, and DC03 cold rolled galvanized steel plates combine strength, precision, and corrosion resistance to meet the demanding requirements of modern industrial applications. Whether you are manufacturing automotive components, home appliances, electrical cabinets, or metal furniture, our steel products provide reliable performance and long-lasting quality.
Contact GNEE Steel today to explore our full range of cold rolled galvanized steel solutions and ensure your projects are built on the foundation of high-quality, precision-engineered steel.
What is the difference between DC01 and DC03 steel?
DC01 can be used for simple forming work, for example Bending, embossing, beading and pulling. DC03 is suitable for forming requirements like Deep drawing and difficult profiles suitable.
What is DC03 steel?
DC03 is a low-carbon steel characterized by excellent cold formability. The chemical composition of DC03 is precisely defined to ensure that the material has the required mechanical properties. Typically, DC03 contains a maximum of 0.10% carbon, a maximum of 0.45% manganese and traces of phosphorus and sulphur.
What standard does GNEE's DC03 cold-rolled steel coil (1.0347) comply with?
GNEE's DC03 cold-rolled steel coil (material number: 1.0347) strictly adheres to the DIN EN 10130 standard, which is the European benchmark for cold-rolled low-carbon steel for cold forming. This compliance ensures consistent chemical composition, mechanical properties, and surface quality, making it suitable for global applications and international trade.
How is DC03 (1.0347) different from DC01 steel coil?
Compared to DC01 (the basic grade), DC03 (1.0347) offers superior deep drawability and ductility. Key differences include: DC03 has an elongation rate of ≥34% (vs. DC01's ≥28%) and a lower yield strength range (120-210 MPa vs. DC01's 140-280 MPa). This makes DC03 ideal for complex forming processes (e.g., shallow to medium deep drawing) in automotive and home appliance industries, while DC01 is better for simple bending or stamping.
What are the key mechanical properties of DC03 (1.0347) steel coil?
GNEE's DC03 (1.0347) features stable mechanical properties optimized for cold forming:
Yield Strength: 120-210 MPa
Tensile Strength: 270-350 MPa
Elongation (A80): ≥34%
Surface Roughness (Ra): ≤0.6 μm
These properties minimize cracking risks during complex stamping and ensure dimensional stability of finished products.
Can DC03 (1.0347) be used for automotive deep-drawing components?
Yes, it is an excellent choice for automotive shallow to medium deep-drawing parts. Typical applications include outer door panels, fenders, fuel tank shells, dashboard brackets, and radiator upper brackets. Its high elongation (≥34%) and low yield strength effectively withstand complex deformation, meeting the automotive industry's strict requirements for forming precision and reliability.
Does GNEE provide quality certificates for DC03 (1.0347) steel coil?
Absolutely. We provide EN 10204 Type 3.1 material test certificates for all DC03 (1.0347) shipments. This certificate includes actual test results of chemical composition, mechanical properties, and surface quality, certified by GNEE's quality department to ensure compliance with DIN EN 10130 standards-critical for customs clearance and downstream production quality control.
What is the minimum order quantity (MOQ) for DC03 (1.0347) steel coil?
The standard MOQ for GNEE's DC03 (1.0347) cold-rolled steel coil is 3 tons (per coil). For bulk orders (over 50 tons), we offer preferential pricing. We also accept small-batch orders (below 3 tons) for sample testing or trial production to support customers' initial project needs.
Can GNEE customize the specifications of DC03 (1.0347) steel coil?
Yes, we provide comprehensive customization services. Standard specifications include:
Thickness: 0.10-6.0 mm (customizable to 0.08 mm for special needs)
Width: 800-1500 mm (slitting to narrow widths available)
Coil Weight: 3-25 tons (adjustable based on shipping or production requirements)
Additionally, we offer surface treatments such as skin passing to enhance flatness and paint adhesion.
What is the lead time for DC03 (1.0347) steel coil orders?
For standard specifications in stock, the lead time is 7-10 working days (from order confirmation to shipment). For customized orders or bulk quantities (over 100 tons), the lead time is 15-20 working days, depending on production scheduling. We prioritize urgent orders and provide real-time production updates to ensure on-time delivery.
Is DC03 (1.0347) suitable for home appliance components requiring painting?
Yes. DC03 (1.0347) has a smooth, scale-free surface (Ra≤0.6 μm) that ensures excellent adhesion of paints, coatings, or galvanizing layers. It is widely used for mid-to-high-end home appliance parts such as refrigerator curved door panels, washing machine inner drums, and air conditioner evaporator shells. The uniform material structure also guarantees consistent coating quality across the entire coil.