AA3003 H14 DC aluminum coil hot rol
AA3003 H14 DC aluminum coil hot rol is a manganese-alloyed, medium-strength, corrosion-resistant aluminum coil produced by hot rolling and cold finishing to H14 temper. Widely used in HVAC, food and beverage packaging, building façades, and general sheet metal fabrication, AA3003 H14 offers excellent formability, weldability, and surface finish with balanced mechanical properties. Available in a wide range of thicknesses, widths, and coil weights, it is an economical choice where moderate strength and superior corrosion resistance are required.
Product Overview
AA3003 is part of the 3xxx series aluminum alloys where manganese (Mn) is the principal alloying element. The alloy combines good mechanical properties, excellent corrosion resistance, and superior workability. The "H14" temper indicates strain-hardened to a half-hard condition (approximately 1/2 hard), produced by cold rolling after hot rolling (DC — direct chill/hot rolled coil followed by cold work). "Hot rol" here emphasizes initial hot rolling in production, followed by cold finishing to achieve the specified temper and dimensional tolerances.
Features
- Excellent corrosion resistance in many common environments, including atmospheric and mildly corrosive conditions.
- Good formability and moderate strength in H14 temper; suitable for bending, drawing, and shallow forming operations.
- Good weldability (TIG, MIG, spot welding) and solderability.
- Good thermal and electrical conductivity relative to steel.
- Smooth surface finish suitable for painting, coating, and anodizing (anodizing quality depends on surface prep).
- Economical and widely available; commonly used as a general-purpose alloy.
Main Applications
- HVAC ducting and components (ductwork, fittings, louvers)
- Building envelope and architectural panels (cladding, facades, soffits)
- Food and beverage containers (cans, trays — note: AA3003 is often used as a base alloy in can stock but final can manufacture may use specific tempers and surface treatments)
- Kitchenware and appliances (sinks, panels)
- Heat exchangers and radiators
- Transport: interior panels, trim and fabricated parts
- Electrical enclosures and general sheet metal fabrications
Chemical Composition
Typical composition ranges for AA3003 per common standards (weight %):
| Element | Typical Composition (wt%) | Specification Range (approx.) |
|---|---|---|
| Al | Balance | Balance |
| Mn | 1.0–1.25 | 1.0–1.5 |
| Cu | 0.05–0.20 | 0.05–0.20 |
| Fe | 0.40–0.70 | ≤ 0.7 |
| Si | 0.10–0.60 | ≤ 0.6 |
| Zn | 0.10–0.20 | ≤ 0.2 |
| Ti | 0.01–0.05 | ≤ 0.15 |
| Others | <0.05 each, <0.15 total | Controlled impurities |
Note: Actual composition must comply with the relevant standard (e.g., ASTM B209, EN 573-3) supplied by manufacturer; values above are typical/representative.
Mechanical Properties (H14 Temper)
Typical mechanical properties for AA3003 H14 (indicative values — verify with supplier/test certificates):
| Property | Typical Value (metric) | Typical Value (imperial) |
|---|---|---|
| Tensile Strength (Rm) | 120–170 MPa | 17.4–24.6 ksi |
| Yield Strength (Rp0.2) | 70–110 MPa | 10.2–15.9 ksi |
| Elongation (A50, typical) | 2–6% | 2–6% |
| Hardness (Brinell/HB) | ~35–55 HB | ~35–55 HB |
| Density | 2.70 g/cm3 | 0.0975 lb/in3 |
| Modulus of Elasticity | 69 GPa | 10,000 ksi |
Temper and Tempering Conditions
- H14: Strain-hardened to a half-hard condition by cold rolling. Not heat-treatable; strength increase is achieved by work hardening.
- Production route: Hot rolled coil (DC/hot rolled) → pickling/annealing as needed → cold rolling to final gauge → controlled skin-pass/roller levelling → H14 hardness target.
- Typical cold reduction to achieve H14 depends on starting gauge and target mechanical properties; consult mill specifications.
Surface Finishes & Treatments
- As-rolled (mill finish)
- Light pickled/bright annealed
- Pre-painted or coil-coated (PVDF, polyester) — surfaces must be properly pretreated
- Anodizing: possible but anodic appearance varies; surface preparation important
- Protective film or oil for transport & fabrication
- Custom surface treatments (e.g., lacquered, primer coated) available on request
Dimensional Ranges & Coil Data
Typical dimensional options (subject to mill capability and order specification):
| Parameter | Typical Range |
|---|---|
| Thickness (mm) | 0.15 – 6.0 mm (common: 0.2–3.0) |
| Thickness (inch) | 0.006 – 0.236 in |
| Width (mm) | 20 – 1600 mm (common: 100–1250) |
| Width (inch) | 0.8 – 63 in |
| Coil Inner Diameter | 508 mm (20"), 610 mm (24"), or others |
| Coil Outer Diameter | Up to ~2200 mm (depends on gauge) |
| Coil Weight | 0.5 – 10+ tonnes (custom) |
Processing & Fabrication Guidelines
- Forming: Good for bending and shallow drawing. Use appropriate tooling; avoid sharp radii when possible.
- Cutting: Laser, shearing, stamping, waterjet feasible. Burr formation depends on thickness and tooling.
- Welding: Good compatibility with TIG, MIG, spot welding. Pre-cleaning improves weld quality.
- Annealing: If softer temper needed, anneal to O condition (process by supplier or recommended furnace schedule).
- Surface protection: For long-term exposure or corrosive environments, consider coatings, anodizing, or use alloy-specific treatments.
Quality Standards & Compliance
Common standards applicable to AA3003 coil products (confirm with supplier):
| Standard Body | Typical Standards |
|---|---|
| ASTM | ASTM B209 (sheet & plate), ASTM B209/B209M |
| EN / ISO | EN 573 (chemical composition), EN 485 (coils/sheets), ISO 6361 |
| JIS | JIS H4000 series (where applicable) |
Packaging & Delivery
- Coils are usually packaged with protective interleaving, plastic film, or VCI paper.
- Delivered on pallets or wooden cradles; strapped and banded for transport.
- Special packaging for export (fumigated wood skids, seaworthy crates) available.
- Certified test reports (chemical, mechanical) and mill certificates provided per order.
Advantages vs. Competing Alloys
- Compared to 1xxx series: higher strength, improved mechanical performance.
- Compared to 5xxx series: 3003 is more formable but has lower strength than some Mg-alloy 5xxx grades.
- Compared to 3102 or 3004: 3003 offers good balance of formability and corrosion resistance; alloys like 3004 may be preferred for can-making due to slightly different tempering and properties.
Limitations & Considerations
- Not heat-treatable — strength limited to work-hardening and cold reduction.
- For heavy structural applications where high strength is required, consider 5xxx or 6xxx series alloys.
- Surface condition depends heavily on mill processing; specify finish and surface quality when ordering for visible architectural applications.
- For food contact, ensure compliance with local food safety regulations and post-treatment as required.
Ordering Information (Typical)
When ordering, include:
- Alloy: AA3003 (3003)
- Temper: H14 (or specify other temper if required)
- Thickness and width
- Surface finish (mill finish, pre-painted, anodized)
- Coil weight, inner diameter
- Quantity and delivery schedule
- Required certifications or test reports
- Any special packaging or handling requirements
Contact & Technical Support
For precise tolerances, certified test reports, custom alloys, or application-specific recommendations (forming trials, weld schedules, coating compatibility), contact your supplier’s technical sales or metallurgical support team. Mill test certificates and material traceability should be requested for critical applications.
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