Cold Rolled Carbon Steel Sheet
Cold rolled carbon steel sheet is produced from pickled hot-rolled coils reduced on tandem cold mills at room temperature to precise gauge tolerances, followed by controlled annealing and temper rolling to eliminate yield point elongation and optimize formability for demanding stamping, drawing, and coating applications.
Technical Specifications
|
Parameter |
Standard Range / Specification |
|
Thickness |
0.30 mm to 3.00 mm |
|
Width |
600 mm to 1850 mm |
|
Form |
Coil or Cut-to-Length Sheet (1000 mm to 6000 mm) |
|
Standards & Grades |
JIS G3141 (SPCC, SPCD, SPCE) EN 10130 (DC01, DC03, DC04, DC05, DC06) ASTM A1008 (CS Type A/B, DS, DDS) |
|
Edge Condition |
Mill Edge / Slit Edge |
Mechanical Properties
Yield Strength: Controlled brackets from 140 MPa (deep drawing) to 270 MPa (commercial drawing).
Tensile Strength: Stable performance profiles maintained between 270 MPa and 410 MPa.
Elongation: High elongation capacity exceeding 30 percent to 48 percent minimum for complex contour forming.
Hardness: Maintained within HRB 50 to 85 limits to prevent springback and ensure press stability.
Surface Finishes & Treatments
Finish Grades
Bright finish, dull or matte finish for lubricant retention, and extra-smooth finish for high-gloss painting.
Oiling Status
Supplied dry or coated with anti-rust corrosion inhibitor oil (light, medium, or heavy weight).
Defect Standards
Continuous automated optical inspection ensuring freedom from pits, scratches, and roller marks.
Industrial Applications
Internal structural brackets, dashboard panels, seat frames, and stiffeners.
Air handler cabinets, ductwork housings, and furnace casings.
Exterior panels, washer drums, and refrigerator outer shells.
Distribution boxes, server racks, and switchgear cabinets.
Quality Assurance
Chemical Analysis: Spectrometer verification of carbon, manganese, phosphorus, sulfur, and silicon per heat.
Gauge Control: Real-time laser thickness measurement monitoring entire coil length and width.
Destructive Testing: Standard tensile, elongation, and hardness evaluations on head and tail test coupons.
Traceability: Mill Test Reports conforming to EN 10204 3.1 issued with heat numbers and test data.
Customization Capabilities
Tolerance Adjustment: Tightened thickness limits customized to half-standard parameters for precision tooling.
Metallurgical Tuning: Grain size refinement and temper rolling engineered for specific yield-to-tensile ratios.
Surface Texturing: Customized roughness values tailored to specific powder or liquid coating adhesion requirements.
Value-Added Processing: Precision blanking, multi-strand slitting, and paper-interleaved packaging.
Packaging & Logistics
Export Protection
Inner anti-rust moisture barrier film, waterproof outer plastic wrapping, and corrugated edge protection.
Securing Methods
Heavy-duty steel strapping on robust wooden pallets or eye-to-sky wooden saddles.
Transport Safety
Containerized and break-bulk loading protocols preventing transit shifting and moisture ingress.
Frequently Asked Questions
Q: What is the minimum order quantity for custom slit widths?
A: Determined by steel grade and specifications, typically starting at 5 metric tons per item.
Q: How are coils protected against rust during ocean transit?
A: Wrapped in volatile corrosion inhibitor film, coated with specialized rust-preventative oil, and sealed in moisture-proof packaging.
Q: Are Mill Test Reports provided prior to dispatch?
A: Yes, electronic reports conforming to EN 10204 3.1 standards are issued for technical verification before shipping.
Q: What is the standard production lead time?
A: Ranges from 15 to 25 days depending on rolling schedule allocation and processing requirements.
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