The most important concern in an aluminium foil quotation is not the lowest rate per kilogram. It is whether every supplier is pricing the same usable material, quality level, packing method, and delivery term. A low quoted figure can become expensive if the roll has poor thickness consistency, excessive joints, unsuitable alloy temper, or high freight and slitting losses.
For industrial packaging, food containers, insulation, tape, cable, battery, and lamination applications, compare the total delivered cost per usable kilogram. Start by fixing technical specifications before requesting commercial terms.
Ask every supplier to quote against one written specification. The purchase description should state alloy, temper, thickness, width, coil geometry, surface condition, packing, inspection standard, and Incoterm. Without these controls, two offers with the same nominal gauge may not deliver equivalent output on converting equipment.
| Item | What to specify | Why it changes cost or performance |
|---|---|---|
| Alloy and temper | Example: 1235-O, 8011-O, 3003-H24, 8006-H22 | Determines strength, drawability, corrosion behavior, and conversion route |
| Thickness | Nominal thickness plus permitted tolerance | Tighter gauge tolerance raises rolling and inspection cost |
| Width | Nominal width plus tolerance and edge condition | Affects slitting yield, trim loss, and machine fit |
| Roll dimensions | Inner diameter, outer diameter, maximum roll mass | Controls unwinding compatibility and container loading |
| Surface | Bright or matte side, oil level, wetting tension, pinhole limit | Critical for printing, coating, lamination, and barrier performance |
| Joints | Maximum number of splices per roll and marking method | Reduces unplanned line stops and downstream waste |
| Packaging | Export seaworthy packing, pallet method, corrosion protection | Prevents transit damage and moisture staining |
| Commercial basis | Net weight, gross weight, Incoterm, payment currency, quote validity | Prevents hidden logistics and currency differences |
For flexible packaging, annealed foil commonly follows ASTM B479, which covers annealed aluminum and aluminum-alloy foil for flexible barrier, food-contact, and related uses. European orders may reference EN 546, including EN 546-1 for technical inspection, EN 546-2 for mechanical properties, EN 546-3 for dimensional tolerances, and EN 546-4 for special property requirements.
A food-contact claim needs more than an alloy name. Request a declaration of compliance appropriate to the destination market. In the EU, food-contact materials are governed by Framework Regulation (EC) No 1935/2004 and GMP Regulation (EC) No 2023/2006. Coatings, inks, adhesives, lubricants, and laminated layers must also be evaluated because the finished structure, not foil alone, contacts food.
Aluminum foil pricing normally contains a metal component and a conversion component. The metal component may be linked to an agreed exchange reference or a fixed basis. The conversion component reflects casting, hot rolling, cold rolling, annealing, slitting, inspection, packing, and supplier margin. Alloy, gauge, width, quality requirements, and order configuration all affect conversion cost.
Use this comparison structure:
| Cost element | Check in the offer | Common quotation risk |
|---|---|---|
| Metal basis | Exchange reference, pricing date, premium, currency | Different pricing dates make offers appear falsely cheaper |
| Conversion | Rate per kg or per tonne, included processes | Slitting, annealing, or export packing may be excluded |
| Weight basis | Net foil weight versus gross packed weight | Comparing gross-weight freight with net-weight material cost |
| Freight and insurance | FOB, CFR, CIF, DAP, or other named Incoterm | Inland transport, insurance, or destination charges omitted |
| Duty and taxes | HS classification and destination rules | Duty rate assumed without customs confirmation |
| Quality allowance | Rejection, claims, downgrade, replacement terms | No remedy defined for off-specification material |
A practical landed-cost calculation is:
Landed cost per usable kg = Material price per net kg + allocated logistics and import costs + financing cost + expected conversion scrap cost
For a quick yield check, aluminum density is approximately 2.70 g/cm³. The theoretical mass per square meter can be estimated as:
Mass kg/m² = thickness in mm × 2.70
For example, 0.00635 mm foil has a theoretical mass of about 0.0171 kg/m². This lets a converter compare cost per square meter, rather than only cost per kilogram. It is particularly useful when evaluating thickness proposals that appear similar but deliver different coverage.
Do not accept a quotation with only alloy, thickness, and price. Ask whether the listed thickness is nominal, minimum, or average measured thickness. A lower average gauge may reduce metal use, but it can increase pinholes, breakage, poor embossing, or inadequate stiffness depending on the application.
Choose foil by end use rather than using one general-purpose grade for every project. The following comparison helps narrow the specification.
| Application | Typical material direction | Performance focus |
|---|---|---|
| Flexible food and pharmaceutical laminates | 1235-O, 8011-O, 8079-O | Pinholes, surface cleanliness, bondability, barrier consistency |
| Household foil and food packaging | 8011-O, 1235-O | Formability, tensile consistency, appearance, rolling quality |
| Semi-rigid containers and trays | 3003, 3004, 8006 | Strength, deep drawing behavior, earing control, shape retention |
| Industrial tape and cable wrap | 1235-O, 1145-O | Flatness, adhesion surface, controlled thickness, winding quality |
For standard food wrapping or laminated structures, specify 8011 Aluminum Foil Food for Packaging when a balance of formability and packaging performance is needed. For formed containers where stiffness after drawing is a priority, evaluate 3004 Aluminum Foil for Container and Electronics against 3003 and 8006 using actual tooling trials.
Before shipment, require a mill test certificate showing alloy, temper, dimensions, net mass, and relevant test results. The inspection plan should match the application.
Verify thickness at agreed sampling positions using a calibrated micrometer or approved online gauge record.
Measure width, camber, telescoping, inner diameter, and outer diameter against the order tolerance.
Check tensile strength and elongation when forming, embossing, or tension-sensitive converting is involved.
Define pinhole testing method and acceptance limit for thin-gauge barrier foil. State the test area, illumination or detector method, and sampling frequency.
Confirm surface wetting tension or dyne level for printing, coating, and lamination applications.
Inspect for oil marks, scratches, edge cracks, wrinkles, oxide staining, and loose winding.
Record splice count, splice location marking, and splice strength requirement.
Review packing photographs, pallet condition, desiccant use, edge protection, and container loading plan before dispatch.
A disciplined quotation format, usable-yield calculation, and release inspection plan make foil offers comparable. This approach protects production continuity while keeping delivered material cost visible from the first quotation through receipt.