Grade DC03 is one of the most versatile cold rolled steel grades widely used in modern industries. Known for its excellent formability, moderate strength, and surface quality, DC03 steel is ideal for deep drawing, bending, and complex stamping applications.
At GNEE Steel, we supply high-quality DC03 steel sheets and coils, available in both cold rolled and galvanized versions, to meet diverse industrial needs.
Chemical Properties
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Key Chemical Elements & Composition Ranges
| Element | Content Range | Technical Role & Significance |
|---|---|---|
| Carbon (C) | ≤0.10% | Low-carbon design is critical for formability: Reduces hardness and brittleness, enabling deep drawing, stamping, and bending without cracking. Also enhances weldability by avoiding carbide precipitation. |
| Manganese (Mn) | ≤0.45% | Improves tensile strength and workability without compromising ductility. Acts as a deoxidizer during production, reducing internal defects. |
| Phosphorus (P) | ≤0.030% | Strictly controlled impurity: High P content increases brittleness (especially at low temperatures). DC03's low P ensures toughness during forming and service. |
| Sulfur (S) | ≤0.025% | Another critical impurity limit: S forms brittle sulfide inclusions, which cause cracking during stamping/deep drawing. Low S content guarantees structural integrity. |
| Aluminum (Al) | ≥0.020% | Grain refiner: Promotes uniform, fine-grained microstructure, enhancing ductility (elongation ≥32%) and consistent forming performance across batches. |
| Iron (Fe) | Balance | Base metal providing structural integrity; purity ensured by strict control of alloying elements and impurities. |
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Chemical Compliance & Quality Control
DC03 strictly adheres to EN 10130 (cold-rolled flat products for cold forming) and EN 10139 (narrow strips), with mill test certificates (MTC) verifying chemical composition for each batch.
Impurity control (P ≤0.030%, S ≤0.025%) exceeds basic grades like DC01 (P/S ≤0.035%), making DC03 suitable for high-precision applications.
Trace elements (e.g., copper, nickel) are kept below 0.10% to avoid adverse effects on formability or coating adhesion.
Mechanical Properties
Yield Strength: 180–320 MPa
Tensile Strength: 280–450 MPa
Elongation: ≥26%
Applications of DC03 Steel
DC03 steel is widely used in industries where surface finish, formability, and moderate strength are essential. Common applications include:
Automotive Industry
Interior and exterior body panels
Structural parts requiring precision forming
Deep-drawn components such as door panels, roof panels, and fenders
Home Appliances
Washing machine drums and panels
Refrigerator and oven housings
Air conditioner casings
Electrical and Electronic Enclosures
Switchgear cabinets
Control panels
Electrical boxes and distribution cabinets
Furniture and Office Equipment
Metal frames for office furniture
Filing cabinets, drawers, and storage units
General Metal Fabrication
Light structural parts
Decorative metal components requiring smooth surface finish
When galvanized, DC03 steel gains enhanced corrosion resistance, making it suitable for outdoor applications or humid environments.
Advantages of Using DC03 Steel
Excellent Formability: Suitable for deep drawing and complex shaping.
Consistent Surface Quality: Smooth surface for painting or coating.
Reliable Strength: Maintains structural integrity in fabricated components.
Weldable and Fabrication-Friendly: Easy to cut, bend, or stamp.
Versatility: Applicable in automotive, appliance, electrical, and furniture industries.
Why Choose GNEE Steel's DC03 Products?
GNEE Steel provides premium DC03 steel sheets and coils with strict quality control and international standard compliance. Customers benefit from:
Wide range of thicknesses and widths tailored to project requirements
Galvanized and uncoated options for enhanced corrosion resistance
Technical support for material selection, forming, and welding
Global delivery with consistent quality assurance
Conclusion
Grade DC03 cold rolled steel is an excellent choice for industries that require high-quality, formable, and reliable steel. Its combination of chemical composition, mechanical strength, and surface finish makes it ideal for automotive parts, home appliances, electrical enclosures, furniture, and general metal fabrication.
GNEE Steel ensures that every DC03 steel sheet or coil meets international standards and customer expectations, providing a durable and cost-effective solution for your manufacturing needs.
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.