Round flat
The standard slug for backward-extruded cans, tubes and housings.
Impact extrusion slugs
1060 Aluminium Slug
1060 aluminium slugs are annealed blanks of at least 99.6 % aluminium, sitting between 1050 and 1070 in purity and softness. They give excellent flow in impact extrusion with high conductivity for electrical and thermal parts. Metline supplies 1060 slugs punched or sawn to your diameter, thickness, shape and surface finish, with mill certification, worldwide.
- Purity
- ≥ 99.6 % Al
- Temper
- O (annealed)
- Conductivity
- About 62 % IACS
- Tolerances
- EN 570 or drawing
Where 1060 fits among slug grades
The 1xxx slug grades differ mainly in purity. Each extra tenth of a per cent of aluminium makes the annealed metal slightly softer, more ductile and more conductive, and slightly more expensive.
1060 (99.6 % Al) is widely used in North America and Asia, where it is registered as A91060 and JIS A1060; in Europe the nearest common slug grades are EN AW-1050A and 1070A. In a press it behaves very close to 1050 with a marginally lower flow stress, and its slightly higher conductivity makes it a good fit for electrical housings, terminals and heat-dissipating parts.
Like all pure grades it cannot be strengthened by heat treatment. Finished impact-extruded parts gain strength from the cold work of the extrusion itself, which is why a thin wall made from a soft slug ends up noticeably harder than the slug was.
1060 chemical composition (wt %)
| Element | Limit |
|---|---|
| Silicon (Si) | 0.25 max |
| Iron (Fe) | 0.35 max |
| Copper (Cu) | 0.05 max |
| Manganese (Mn) | 0.03 max |
| Magnesium (Mg) | 0.03 max |
| Zinc (Zn) | 0.05 max |
| Titanium (Ti) | 0.03 max |
| Vanadium (V) | 0.05 max |
| Others, each | 0.03 max |
| Aluminium (Al) | 99.60 min |
Aluminum Association registered limits; equivalent to JIS A1060 and GB/T 3190 1060.
Mechanical and physical properties
| Condition | Tensile strength | Yield strength | Elongation | Hardness |
|---|---|---|---|---|
| O (annealed), typical | About 69 MPa | About 28 MPa | About 40 – 43 % | About 19 HB |
| H112 extrusion, supplier minimum | 60 MPa | 15 MPa | — | — |
| H14, typical (for reference) | About 100 MPa | About 90 MPa | About 12 % | About 26 HB |
Physical properties
- Density
- 2.705 g/cm³
- Melting range
- About 646 – 657 °C
- Thermal conductivity
- About 234 W/m·K
- Electrical conductivity
- About 62 % IACS
- Coefficient of expansion
- About 23.6 µm/m·°C
Typical values are for comparison; acceptance limits for hardness, dimensions and mass are agreed with each order and reported on the certificate.
Sizes, shapes and weights
Typical supply range
- Diameter
- About 10 – 200 mm
- Thickness
- About 2 – 25 mm
- Shapes
- Round, perforated, domed, oval and rectangular
- Surface
- Tumbled, shot-blasted or sand-blasted
- Tolerances
- EN 570 or customer drawing
Perforated (centre hole)
For open-ended collapsible tubes, nozzles and parts with a through bore.
Domed, concave or conical
Pre-shaped faces that improve metal flow and reduce the force needed for deep parts.
Oval, square and rectangular
For non-round cans, prismatic battery cases and rectangular housings.
| Diameter (mm) | Thickness (mm) | Mass per slug (g) | Slugs per 25 kg |
|---|---|---|---|
| 20 | 3 | 2.5 | 9806 |
| 25 | 4 | 5.3 | 4706 |
| 27 | 5 | 7.7 | 3228 |
| 35 | 5 | 13.0 | 1921 |
| 40 | 6 | 20.4 | 1225 |
| 45 | 6 | 25.8 | 968 |
| 50 | 7 | 37.2 | 672 |
| 54 | 8 | 49.6 | 504 |
| 63.5 | 8 | 68.5 | 364 |
| 74 | 10 | 116.3 | 214 |
| 90 | 12 | 206.5 | 121 |
| 116 | 15 | 428.8 | 58 |
Mass = π/4 × d² × t × density, for a solid round slug with no centre hole. Perforated, domed or grooved slugs weigh less; the exact slug mass is set from the volume of your finished part plus trim allowance.
Production route and quality checks
| Route | How it works | Best for |
|---|---|---|
| Punched from strip | Cast or rolled strip is cold rolled to thickness, slugs are blanked on high-speed presses, then annealed and finished | Thin to medium slugs in high volume: aerosol, tube and capacitor slugs |
| Sawn from rod or bar | Cast or extruded rod is sawn to length, then annealed and finished | Thick slugs, large diameters and short runs; low scrap |
- Annealing to a uniform soft condition and a narrow hardness band
- Surface treatment to remove burrs and oxide and to hold lubricant
- Checks on diameter, thickness, flatness, mass and hardness during production
- EN 10204 3.1 certificate with chemical analysis for each lot
Applications of 1060 slugs
- Electrical: capacitor cans, battery cases, terminal sleeves and shielding cans
- Thermal: cold-forged heat sinks and LED housings where conductivity matters
- Packaging: collapsible tubes, aerosol and bottle bodies
- Industrial: small housings, cups, caps and sleeves
How to order 1060 slugs
- SpecifyGrade (1060), diameter or outline, thickness, centre hole, temper, surface treatment, tolerance and quantity; a drawing of the slug or the finished part helps.
- ConfirmWe confirm the production route (punched or sawn), tolerance basis (EN 570 or your drawing), test documents and EXW, FOB, CIF or DAP terms.
- SampleTrial quantities can be supplied so you can run them on your press before a production order.
- Produce and inspectSlugs are cut, annealed, surface treated, then checked for dimensions, mass, hardness and surface.
- Pack and shipMoisture-protected cartons or bags on export pallets, with an EN 10204 3.1 certificate.
References and standards
- EN 570 – Aluminium and aluminium alloys: impact extrusion slugs obtained from wrought products, specification
- The Aluminum Association – International Alloy Designations and Chemical Composition Limits
- JIS H4000 / GB/T 3190 – wrought aluminium compositions including 1060
- ASM Handbook, Vol. 2 – Properties of Wrought Aluminum and Aluminum Alloys
1060 aluminium (aluminum) slugs: FAQs
Is 1060 better than 1050 for slugs?
The difference is small. 1060 is slightly purer, softer and more conductive; 1050 is slightly stronger and more widely used in Europe. Choose by the conductivity, strength and availability your part needs.
What is the European equivalent of 1060?
1060 is not a common EN slug grade; EN AW-1050A (99.5 %) or EN AW-1070A (99.7 %) is normally specified instead, depending on the ductility needed.
Can 1060 slugs be anodised after extrusion?
Yes. Pure aluminium anodises well, giving a clear, protective film; finished parts can also be lacquered or printed.
What temper are 1060 slugs supplied in?
Normally fully annealed (O). A specific hardness range can be agreed for your process.
Need 1060 aluminium slugs?
Send size, shape, surface finish and quantity for a quotation with certification.
