DC03 Cold Rolled Steel Sheet
DC03 cold rolled steel sheet conforms to EN 10130, engineered for moderate forming, bending, and deep-drawing operations through controlled tandem rolling, batch annealing, and skin-pass processing.
Technical Specifications
|
Parameter |
Specification Range |
|
Execution Standard |
EN 10130 |
|
Thickness Range |
0.30 mm - 3.00 mm |
|
Width Range |
600 mm - 1850 mm |
|
Length Range |
1000 mm - 6000 mm |
|
Edge Condition |
Mill Edge / Trimmed Edge (ET) |
Mechanical Performance
|
Yield Strength (Re) |
Max 210 MPa (≤ 0.70 mm) Max 180 MPa (> 0.70 mm - 1.50 mm) Max 140 MPa (> 1.50 mm - 3.00 mm) |
|
Tensile Strength (Rm) |
270 - 350 MPa across standard thickness tiers |
|
Elongation (A80) |
Min 34% (≥ 0.50 mm); min 38% (≥ 1.50 mm) |
|
Plastic Strain Ratio (r90) |
Typical min 1.6 for deep-drawing reliability |
|
Strain Hardening Exponent (n90) |
Typical min 0.20 for uniform deformation |
Surface Characteristics
Surface Quality Grade:
- FB: Minor pores, scratches, and roller marks permitted without affecting formability
- FC: Finer side free from prominent defects for painted visibility parts
Roughness (Ra): Controlled range 0.6 um - 1.9 um for lubricant retention
Surface Treatment: Electrostatic oiling (1.0 - 3.0 g/m²) or skin-passed dry state
Target Applications
Automotive Components: Structural inner body brackets, seat frames, and fuel tank shields
Home Appliances: Washing machine outer drums, refrigerator wrapper panels, and microwave cavities
Industrial Equipment: Electrical enclosure cabinets, ventilation ducts, and lighting housings
General Fabrication: Pressed metal stampings, welded assemblies, and furniture slides
Quality Assurance
Chemical Analysis: Spectrographic ladle tests verifying strict limits for carbon (≤ 0.10%), manganese, phosphorus, and sulfur
Dimensional Monitoring: Automated laser gauges tracking thickness profile, width, camber, and flatness continuously
Mechanical Testing: Destructive tensile and Erichsen cupping tests per EN ISO 6892-1 on every production lot
Surface Inspection: Strobe-light optical scanning combined with manual exit station checks for pinholes and edge defects
Customization Parameters
Thickness Tolerances: Standard EN limits or tightened half-tolerances (±0.02 mm to ±0.04 mm)
Slitting & Shearing: Multi-strand slitting down to 30 mm width and square-sheared cut lengths within 1.0 mm diagonal tolerance
Oiling Weights: Customized rust-preventive oil film applications matching downstream stamping requirements
Packaging Arrangements: Vertical eye-to-sky, horizontal skid loading, VCI film interleaving, and export pallet stabilization
Packaging & Transport
Anti-corrosion VCI paper combined with moisture-barrier polyethylene film
Galvanized corrugated steel outer wrapper secured with radial steel strapping
Heavy-duty wooden skids with forklift and overhead crane clearance
ISPM 15 heat-treated wood certified for containerized ocean freight
Frequently Asked Questions
Q: What distinguishes DC03 from DC01 steel sheets?
A: DC01 serves commercial bending tasks, whereas DC03 features lower carbon limits and higher elongation values tailored for moderate deep-drawing and press-forming.
Q: Are Mill Test Reports supplied with consignments?
A: Yes. Each shipment includes certified inspection documents detailing actual ladle analysis, mechanical test results, and surface classifications matching the specific heat number.
Q: What protective oil coating is standard on the sheets?
A: Sheets feature a temporary rust-preventive oil film compatible with standard industrial alkaline cleaning agents prior to painting.
Q: Can material be supplied in custom cut lengths?
A: Yes. Coils are processed on cut-to-length lines to specific sheet dimensions ranging from 1000 mm to 6000 mm.
Q: What governs minimum order quantities for non-standard dimensions?
A: Minimum order quantities depend on rolling schedule allocations and slitting setups. Contact technical sales with specific gauge requirements to verify mill run criteria.
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