DC01 Cold Rolled Steel Sheet
DC01 is the standard commercial quality cold rolled steel grade specified under European standards, serving as a primary material for structural components and formed enclosures. The manufacturing process involves pickling hot-rolled coils to remove surface scale, cold rolling to exact target gauges, and batch or continuous annealing to relieve internal stresses and restore ductility. This route yields superior thickness uniformity across the entire coil width compared to hot-rolled alternatives, ensuring predictable behavior during automated stamping and laser cutting.
Technical Specifications
|
Parameter |
Specification Details |
|
Standard & Grade |
EN 10130 - DC01 (Material Number: 1.0330) |
|
Thickness Range |
0.30 mm to 3.00 mm (Tolerance to EN 10131) |
|
Width Range |
600 mm to 1500 mm (Custom slitting available) |
|
Length / Form |
Cut-to-length sheets (1000 to 4000 mm) or coils |
|
Edge Condition |
Mill edge or trimmed edge (ET) |
Mechanical Properties
|
Yield Strength |
Maximum 280 MPa (for thickness up to 1.5 mm) |
|
Tensile Strength |
270 to 410 MPa |
|
Minimum Elongation |
At least 38% (thickness dependent per EN 10130) |
|
Hardness |
Typically 105 to 145 HV |
|
Forming Index |
Optimized for basic bending, profiling, and mild deep drawing operations |
Surface Finish & Protection
Finish Type (EN 10130):
- Surface FB: Clean surface allowing minor pores, slight scratches, and rolling marks that do not impair formability.
- Surface FC: Smooth surface with the finer side free from distinct defects, suitable for quality paint applications.
Surface Appearance: Bright or matt finish dependent on work roll texturing.
Corrosion Prevention: Lightly oiled on both sides to prevent atmospheric oxidation during transit; oil film weight 1.0 to 2.0 g/m2, easily removable via standard alkaline degreasing.
Typical Applications
Automotive: Seat frames, structural brackets, window regulator parts, and internal reinforcement panels.
Home Appliances: Refrigerator outer panels, washing machine drums, microwave chassis, and air conditioner compressor housings.
Electrical Enclosures: Industrial control cabinets, server racks, junction boxes, and lighting fixtures.
General Engineering: Rolled profiles, stamped brackets, HVAC ventilation ducts, and architectural hardware.
Quality Control & Assurance
Chemical Analysis: Spectrometric ladle and product analysis verifying carbon (up to 0.12%), manganese (up to 0.60%), phosphorus (up to 0.045%), and sulfur (up to 0.045%) limits.
Mechanical Testing: Longitudinal and transverse tensile tests, yield point elongation checks, and hardness testing per ISO 6892-1.
Dimensional Inspection: Continuous optical thickness gauging and laser flatness monitoring across the coil length to eliminate edge waves and center buckles.
Traceability: Heat numbers stamped on coil tags and sheet bundles linking directly to mill test certificates (EN 10204 3.1).
Customization Options
Precision Slitting: Master coils slit down to custom widths starting from 25 mm with slit edge burr control within 5% of material thickness.
Cut-to-Length Precision: Sheets sheared to exact rectangular dimensions with length tolerances within plus or minus 0.5 mm and diagonal squareness within 1.0 mm.
Oiling Variants: Adjustable rust-preventative oil coating weights (dry, light oil, or heavy oil) matched to downstream processing requirements.
Interleaving Paper: Insertion of corrosion-inhibiting paper between sheets for high-aesthetic surface protection.
Packaging & Logistics
Export Packaging: Standard sea-worthy packaging consisting of anti-rust moisture barrier film, waterproof inner wrapping, corrugated outer steel or paper wrappers, reinforced steel edge protectors, and circumferential steel strapping.
Palletization & Weight: Wooden skids or pallets capable of forklift handling, with coil and bundle unit weights engineered from 2 to 5 metric tons based on customer crane capacity.
Delivery Terms: Containerized transport (20GP or 40GP) for sheet bundles and break-bulk vessel shipping for heavy coil volumes under FOB, CFR, CIF, or DDP terms.
Frequently Asked Questions
Q: What is the difference between DC01 and DC03 or DC05 grades?
A: DC01 is standard commercial quality for basic bending and light forming. DC03 and DC05 feature lower carbon limits and higher ductility for complex deep drawing and severe automotive stamping.
Q: Is DC01 steel suitable for powder coating?
A: Yes. When ordered with an FC surface finish and properly degreased and phosphated, DC01 provides an optimal substrate for electrostatic powder coating and liquid painting.
Q: How is surface rust prevented during ocean freight?
A: Each sheet bundle or coil is coated with anti-corrosion mill oil, wrapped in polyethylene moisture barrier film, sealed within reinforced waterproof paper, and secured with steel strapping inside containers fitted with desiccants.
Q: What documentation is shipped with the material?
A: Every shipment includes a comprehensive Inspection Certificate (EN 10204 3.1) detailing actual chemical composition, mechanical test values, and exact dimensional measurements matching the specific heat number.
Q: Can coils be processed into custom cut lengths before delivery?
A: Yes. Precision cut-to-length lines process master coils into customized sheet dimensions to reduce scrap rates at your manufacturing facility.
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