Bare aluminium fin stock is an uncoated aluminum foil product widely used in heat transfer applications such as car radiators, heat exchangers, HVAC systems, and heat shields. It is made from high-quality aluminum alloys from the 1000, 3000, and 8000 series, offering excellent formability, thermal conductivity, and corrosion resistance.
This product is available in various tempers and thicknesses, suitable for automatic fin press machines and modern cooling systems.
Specifications & Technical Data
Standard Product Specifications
| Parameter | Specification Range |
|---|---|
| Alloys | 1100, 1200, 3102, 8011, 8006 |
| Temper | O, H22, H24, H26, H18 |
| Thickness | 0.08-0.2mm (±5%) |
| Width | 100-1400mm (±1mm) |
| Core ID | 75/150/200/300/505mm |
Features of Bare Aluminium Fin Stock
- ✅ Lightweight – Ideal for transportation and HVAC units
- ✅ High Thermal Conductivity – Enhances heat exchange performance
- ✅ Good Formability – Suitable for stamping and fin forming
- ✅ Corrosion Resistant – Works well in moist or harsh environments
- ✅ Recyclable – Environmentally friendly and sustainable
Bare aluminum foil fin stock is a cost-effective solution for manufacturers needing quality and consistency.
Applications of Bare Aluminium Fin Stock
Bare aluminum fin stock foil is used in:
- 🚗 Car Radiators and Condensers
- ❄️ Air Conditioner Heat Exchangers
- 🌬️ HVAC Coils and Evaporators
- 🏭 Industrial Cooling Systems
- 🧊 Refrigerator Components
- 🔥 Heat Shields and Thermal Insulation
Its adaptability and durability make it a popular choice in both consumer and industrial systems.
Specifications of Aluminium Fin Stock
| Alloy | Temper | Thickness (mm) | Width (mm) | Inner Diameter (mm) |
|---|---|---|---|---|
| 1100 | O, H22, H24, H26, H18 | 0.08 – 0.20 (±5%) | 100 – 1400 (±1) | 75 / 150 / 200 / 300 / 505 |
| 1200 | O, H22, H24, H26, H18 | 0.08 – 0.20 | 100 – 1400 | Various |
| 3102 | O, H22, H24, H26, H18 | 0.08 – 0.20 | 100 – 1400 | Various |
| 8011 | O, H22, H24, H26, H18 | 0.08 – 0.20 | 100 – 1400 | Various |
| 8006 | O, H22, H24, H26, H18 | 0.08 – 0.20 | 100 – 1400 | Various |
Custom specifications are available upon request.
Mechanical Properties by Temper
| Temper | Tensile Strength (MPa) | Elongation (%) | Erichsen (IE, mm) |
|---|---|---|---|
| O | 80 – 110 | ≥27 | ≥6.0 |
| H22 | 100 – 135 | ≥22 | ≥5.5 |
| H24 | 115 – 145 | ≥20 | ≥5.0 |
| H26 | 125 – 160 | ≥10 | ≥4.5 |
| H18 | ≥160 | ≥1 | – |
Chemical Composition (Max %)
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ni | Ti | Other Each | Other Total | Al (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AA1100 | 0.95 | 0.05–0.2 | 0.05 | – | – | 0.10 | – | – | 0.05 | 0.05 | 0.15 | ≥99.00 |
| AA1200 | 1.00 | 0.05 | 0.05 | – | – | 0.10 | – | – | 0.05 | 0.05 | 0.15 | ≥99.00 |
| AA3102 | 0.40 | 0.70 | 0.10 | 0.05–0.4 | – | – | 0.30 | – | 0.10 | 0.05 | 0.15 | Remainder |
| AA8011 | 0.5–0.9 | 0.6–1.0 | 0.10 | 0.20 | 0.05 | 0.05 | – | – | 0.10 | 0.08 | 0.15 | Remainder |
| AA8006 | 0.40 | 1.2–2.0 | 0.30 | 0.3–1.0 | 0.10 | – | 0.10 | 0.10 | 0.05 | 0.05 | 0.15 | Remainder |
Packaging & Delivery
We ensure safe packaging for local and international shipments:
- 📦 Coils wrapped in plastic film + moisture-proof paper
- 🪵 Secured in wooden pallets or export crates
- 🏷️ Labeled with alloy, temper, size, and batch number
- ⏱️ Lead Time: 10–20 days depending on order volume
- 📥 Trial orders and sample coils available
Why Choose Our Bare Aluminium Fin Stock?
- 🏭 Factory-direct manufacturing
- ✅ Stable quality with ISO certification
- ✂️ Custom cutting, slitting, and tempering
- 🌍 Fast global delivery and low MOQ
- 💡 Technical support and material guidance available
Our fin stock materials are trusted by HVAC manufacturers, appliance producers, and automotive suppliers worldwide.
Industry Applications
HVAC Systems
- Condenser coils
- Evaporator fins
- Air handler units
Automotive Cooling
- Radiator fins
- Intercoolers
- Oil coolers
Industrial Equipment
- Transformer cooling
- Power electronics
- Process heat exchangers
Specialty Uses
- Data center cooling
- Solar thermal systems
- Aerospace applications
Frequently Asked Questions
Q: What’s the difference between bare and coated fin stock?
A: Bare fin stock offers better thermal conductivity, while coated versions provide enhanced corrosion protection.
Q: How does temper affect fin stock performance?
A: Softer tempers (O) are easier to form, while harder tempers (H18) provide greater strength.
Q: What alloy is best for coastal environments?
A: 3102 offers superior saltwater corrosion resistance.
Q: Can bare fin stock be used in refrigeration systems?
A: Yes, but may require more frequent defrosting compared to hydrophilic versions.
Q: What’s the typical lead time for custom orders?
A: 2-4 weeks for non-standard sizes/alloys.
Ordering Information
Standard Packaging
- Protective interleaving between layers
- Moisture-resistant wrapping
- Sturdy steel or cardboard cores
Custom Options Available
- Special widths/lengths
- Precision slitting
- Custom temper treatments
Contact Us
Need a reliable supplier of bare aluminium fin stock?
📧 Email: jane@wwaluminum.com
📱 WhatsApp: +86 15736973771
🏭 Worthwill Aluminum – Quality Foil from Our Factory to Yours
Let us support your production with consistent quality, on-time delivery, and expert service.
