EN AW numbers simply explained
Wrought aluminium alloys carry a four-digit number according to EN 573. The first digit indicates the main alloying element.
Structure using the example EN AW-5754 [AlMg3]
- ENEuropean standard
- AAluminium
- WWrought alloy (casting: C)
- 5754Series 5 = magnesium
- [AlMg3]Chemical designation
A letter A at the end (e.g. 1050A, 2017A, 5005A) indicates a national variant of the base alloy.
Alloy series
| Series | Main element | Strength through | Example |
|---|---|---|---|
| 1xxx | Aluminium at least 99.00 % | Strain-hardening (H) | 1050A |
| 2xxx | Copper | Age-hardening (T) | 2007, 2017A |
| 3xxx | Manganese | Strain-hardening (H) | 3004 |
| 4xxx | Silicon | – | – |
| 5xxx | Magnesium | Strain-hardening (H) | 5005, 5754, 5083 |
| 6xxx | Magnesium and silicon | Age-hardening (T) | 6060, 6061, 6082 |
| 7xxx | Zinc | Age-hardening (T) | 7075 |
| 8xxx | Other elements | – | – |
Tempers to EN 515
The temper follows the number, e.g. EN AW-6082 T6.
| Temper | Meaning |
|---|---|
| F | As fabricated, no specified strength |
| O | Annealed |
| H111 | Annealed, slightly strain-hardened by straightening |
| H14 | Strain-hardened, half-hard |
| H24 | Strain-hardened and partially annealed, half-hard |
| H32 | Strain-hardened and stabilised, quarter-hard |
| T3 | Solution heat-treated, cold-worked, naturally aged |
| T4 | Solution heat-treated, naturally aged |
| T5 | Quenched from hot working, artificially aged |
| T6 | Solution heat-treated, artificially aged |
| T651 | As T6, additionally stress-relieved by stretching (plates, bars) |
Old designations such as F39 or F51 come from DIN: minimum tensile strength in kp/mm² (F39 ≈ 390 N/mm²).
Comparison with the old DIN and 3.xxxx
| EN AW | Chemical | Old DIN | Material no. | At MVG |
|---|---|---|---|---|
| 1050A | Al99,5 | Al99,5 | 3.0255 | – |
| 2007 | AlCu4PbMgMn | AlCuMgPb | 3.1645 | Semi-finished product |
| 2017A | AlCu4MgSi(A) | AlCuMg1 | 3.1325 | – |
| 5005 | AlMg1(B) | AlMg1 | 3.3315 | Anodised sheet |
| 5083 | AlMg4,5Mn0,7 | AlMg4,5Mn | 3.3547 | – |
| 5754 | AlMg3 | AlMg3 | 3.3535 | Sheet |
| 6060 | AlMgSi | AlMgSi0,5 | 3.3206 | Semi-finished product |
| 6061 | AlMg1SiCu | AlMg1SiCu | 3.3211 | – |
| 6082 | AlSi1MgMn | AlMgSi1 | 3.2315 | Semi-finished product |
| 7075 | AlZn5,5MgCu | AlZnMgCu1,5 | 3.4365 | Semi-finished product |
The US designation (Aluminum Association) uses the same four digits, e.g. 6082. The certificate supplied with the delivery is binding.
CW numbers for copper and brass · Stainless steel grades · Tubes & bars · All materials