Cold rolled steel coils DC01, DC03, and DC04 are widely used low-carbon steel products manufactured in accordance with EN 10130. These grades are distinguished mainly by their formability and drawing performance, making them suitable for a wide range of stamping, bending, and deep drawing applications.
As a professional international steel supplier, GNEE STEEL provides stable-quality DC01 / DC03 / DC04 cold rolled steel coils and sheets, serving customers in automotive, home appliance, electrical, and general manufacturing industries worldwide.
What Is Cold Rolled DC Steel?
Cold rolled DC steel is produced by cold rolling hot rolled steel, followed by annealing and skin-passing to achieve:
- High dimensional accuracy
- Smooth and clean surface finish
- Uniform mechanical properties
- Excellent formability
The "DC" designation refers to drawing quality cold rolled steel, with increasing grade numbers indicating higher drawing capability.
| Grade | Steel No. | Quality Level | Formability |
|---|---|---|---|
| DC01 | 1.0330 | Commercial quality | Basic |
| DC03 | 1.0347 | Drawing quality | Medium |
| DC04 | 1.0338 | Deep drawing quality | High |
Core Performance & Grade Differentiation
Our DC series coils are engineered with precise chemical compositions and stable mechanical properties, with clear positioning for different application requirements:
- DC01: Basic grade with good formability (elongation ≥28%, yield strength 140-280 MPa), suitable for simple bending, stamping, and shallow drawing.
- DC03 (1.0347): High-performance grade with superior deep drawability (elongation ≥34%, yield strength 120-210 MPa) and uniform surface quality (Ra≤0.6 μm). It outperforms DC01 in complex forming resistance, ideal for shallow to medium deep-drawing processes.
- DC04: Advanced deep-drawing grade (elongation ≥38%, yield strength 120-210 MPa), designed for more demanding complex forming needs.
Chemical Composition (EN 10130 – Typical)
| Element | DC01 | DC03 | DC04 |
|---|---|---|---|
| C (%) | ≤0.12 | ≤0.08 | ≤0.08 |
| Mn (%) | ≤0.60 | ≤0.40 | ≤0.40 |
| P (%) | ≤0.045 | ≤0.025 | ≤0.025 |
| S (%) | ≤0.045 | ≤0.020 | ≤0.020 |
Lower carbon and impurity content results in better plasticity and formability.
Mechanical Properties (Typical Values)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation |
|---|---|---|---|
| DC01 | ≤280 | 270–410 | ≥28% |
| DC03 | ≤240 | 270–370 | ≥28% |
| DC04 | ≤210 | 270–350 | ≥38% |
Key Applications of DC03 (1.0347) Cold Rolled Steel Coil
With excellent formability, surface quality, and mechanical stability, DC03 (1.0347) is widely used in key industries requiring complex forming:
1. Automotive Industry
It is a reliable material for automotive shallow to medium deep-drawing components, including interior parts (precision door linings, integrated dashboard brackets), exterior parts (outer door panels, fenders), and functional structural parts (fuel tank shells, radiator upper brackets). Its high elongation (≥34%) and low yield strength effectively reduce cracking risks during complex stamping, fully meeting the automotive industry's strict requirements for forming precision, dimensional stability, and reliability.
2. Home Appliances
As the core material for mid-to-high-end home appliances, DC03 (1.0347) is used for refrigerator curved door panels, washing machine inner drums, air conditioner evaporator shells, and microwave oven inner liners. Its smooth, scale-free surface ensures excellent adhesion of subsequent painting or coating processes, while its outstanding deep drawability supports diverse and personalized appliance designs, enhancing product appearance and usability.
3. Metal Furniture & Office Equipment
It is processed into high-quality products such as curved table frames, integrated file cabinet bodies, and multi-functional storage shelves. Combining strong durability, good weldability, and excellent bending performance, it can withstand complex shaping processes without deformation. The uniform material structure also ensures a consistent aesthetic effect of finished products, suitable for both civilian and commercial high-end furniture scenarios.
4. Electrical & General Fabrication
DC03 (1.0347) is ideal for precision components like electrical control enclosures, high-precision distribution boxes, complex-shaped hardware accessories, and small mechanical stamping parts. It perfectly adapts to both small-batch customized production (for special-shaped components) and large-scale mass production (for standard parts), with stable performance that guarantees product qualification rates and production efficiency.
Conclusion
Cold Rolled DC01, DC03, and DC04 Steel Coils provide flexible solutions for manufacturers with different forming requirements. Selecting the correct grade ensures better forming efficiency, lower scrap rates, and optimized production costs.
📩 Contact GNEE STEEL today for quotations, technical support, and customized cold rolled steel solutions.
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.