Aluminium Alloys Chart: Chemical Composition and Properties
Selected chemical composition limits and practical guidance for aluminium sheet, plate and coil.
Chemical composition
Selected limits in % by mass. A single value is a maximum; two values show a permitted range. Aluminium is the remainder, except for the stated minimum for 1050A. A dash means no separate limit is shown here, not zero content. Check the ordered alloy, product standard and inspection certificate before acceptance.
| Alloy (EN AW) | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti |
|---|---|---|---|---|---|---|---|---|
| 1050A | 0.25 | 0.40 | 0.05 | 0.05 | 0.05 | – | 0.07 | 0.05 |
| 3003 | 0.6 | 0.7 | 0.05–0.20 | 1.0–1.5 | – | – | 0.10 | – |
| 3103 | 0.50 | 0.70 | 0.10 | 0.9–1.5 | 0.30 | 0.10 | 0.20 | See note |
| 3105 | 0.6 | 0.7 | 0.30 | 0.30–0.8 | 0.20–0.8 | 0.20 | 0.40 | 0.10 |
| 5005 | 0.30 | 0.7 | 0.20 | 0.20 | 0.50–1.1 | 0.10 | 0.25 | – |
| 5052 | 0.25 | 0.40 | 0.10 | 0.10 | 2.2–2.8 | 0.15–0.35 | 0.10 | – |
| 5754 | 0.40 | 0.40 | 0.10 | 0.50 | 2.6–3.6 | 0.30 | 0.20 | 0.15 |
| 5083 | 0.40 | 0.40 | 0.10 | 0.40–1.0 | 4.0–4.9 | 0.05–0.25 | 0.25 | 0.15 |
| 5086 | 0.40 | 0.50 | 0.10 | 0.20–0.7 | 3.5–4.5 | 0.05–0.25 | 0.25 | 0.15 |
| 6061 | 0.40–0.8 | 0.7 | 0.15–0.40 | 0.15 | 0.8–1.2 | 0.04–0.35 | 0.25 | 0.15 |
| 6082 | 0.7–1.3 | 0.50 | 0.10 | 0.40–1.0 | 0.6–1.2 | 0.25 | 0.20 | 0.10 |
| 7075 | 0.40 | 0.50 | 1.2–2.0 | 0.30 | 2.1–2.9 | 0.18–0.28 | 5.1–6.1 | 0.20 |
1050A: aluminium at least 99.50 %. 3103: Zr + Ti at most 0.10 %. 5754: Mn + Cr 0.10–0.60 %.
Other-element limits also apply: for the listed alloys other than 1050A, at most 0.05 % each and 0.15 % total; for 1050A, at most 0.03 % each. This selected table does not reproduce every standard provision. 1050 and 1050A are distinct grades; retain the full designation, including any suffix, when ordering.
Properties at a glance
This comparison supports initial selection. Strength, corrosion resistance, forming and welding behaviour depend on temper, thickness, product form, fabrication and exposure. Anodising for protection and for decorative appearance are different requirements: specify the finish and agree a sample where appearance matters. Welding can reduce strength locally. These examples do not establish suitability or approval for a particular application.
| Alloy | Common chemical designation | Relative strength | Corrosion resistance | Weldability | Anodising | Typical uses |
|---|---|---|---|---|---|---|
| 1050A | Al 99.5 | Low | Very good in suitable environments | Generally good | Specify anodising quality | Formed sheet, electrical and heat-transfer components |
| 3003 | AlMn1Cu | Low to medium | Good atmospheric resistance | Generally good | Agree finish and appearance | Roofing, heat exchangers, general sheet metal |
| 3103 | AlMn1 | Low to medium | Good atmospheric resistance | Generally good | Anodising-quality products exist; agree appearance | Heat exchangers, formed sheet, roofing and cladding |
| 3105 | AlMn0.5Mg0.5 | Low to medium | Assess alloy, coating and exposure together | Confirm procedure for product and temper | Agree product and sample for decorative use | Painted/coated sheet and closure/packaging sheet |
| 5005 | AlMg1(B) | Low to medium | Good in suitable environments | Generally good | Specify architectural anodising quality | Façades, architectural panels |
| 5052 | AlMg2.5 | Medium | Good; assess marine exposure | Generally good | Agree finish and appearance | Formed sheet, tanks, marine fittings |
| 5754 | AlMg3 | Medium | Good; assess marine exposure | Generally good | Confirm required finish | Tanks, vehicle bodies, formed sheet |
| 5083 | AlMg4.5Mn0.7 | Medium to high | Marine service requires the specified temper and tests | Generally good; account for weld strength | Specify protective or decorative finish | Marine plate and welded fabrication |
| 5086 | AlMg4 | Medium to high | Marine service requires the specified temper and tests | Generally good; account for weld strength | Specify protective or decorative finish | Marine plate and welded fabrication |
| 6061 | AlMg1SiCu | High in T6 condition | Good in suitable environments | Good; strength drops at the weld | Agree finish and appearance | Machined and structural parts |
| 6082 | AlSi1MgMn | High in T6 condition | Good in suitable environments | Good; strength drops at the weld | Functional anodising; agree decorative appearance | Structural parts, machining plate, trailers |
| 7075 | AlZn5.5MgCu | Very high in hardened tempers | Depends on temper and protection | Generally unsuitable for fusion welding | Agree process and finish | High-strength machined parts |
Temper designations in brief
- O: annealed, the lowest-strength temper for the alloy.
- H111: slightly strain hardened by operations such as stretching or levelling; less hardening than H11.
- H14 / H24: half hard; H1x is strain hardened only, H2x strain hardened and partially annealed.
- H32: strain hardened and stabilised.
- H116 / H321: marine tempers used for 5xxx plate. Specify the applicable product standard, corrosion tests and approvals. The temper designation alone does not verify a particular lot’s test results or certification.
- T6: solution heat treated and artificially aged.
- T651: solution heat treated, stress relieved by stretching and artificially aged. Specify the exact temper and product form.
Sources and scope
Chemistry checked against the Aluminum Association Teal Sheets, December 2025. EN 573-3:2026 is the current composition standard; NEN identifies its corresponding alloy limits with the Association registrations. The standard and edition agreed for an order remain decisive. This is a selected reference for sheet, plate and coil, not a complete standard or a stock list.
Selection guidance: Aluminum Association alloy guidance.
Related: aluminium sheet, plate and coil · stainless steel grades chart
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