What is 3003-H18 Aluminum Sheet?
The 3003 aluminum alloy is a popular choice due to its manganese addition, which imparts enhanced properties. The "H18" indicates its temper condition. In the H18 temper, the aluminum sheet has undergone a series of cold working processes that substantially increase its strength and hardness while maintaining decent formability. It's a non-heat-treatable alloy, meaning its mechanical properties are achieved mainly through cold working and not thermal treatments.
| Chemical Composition Limits | |||||||
| Weight % | Al | Cu | Si | Fe | Mn | Zn | Others |
| Alloy 3003 | Rem | 0.05-0.20 | 0.60 max | 0.70 max | 1.0-1.5 | 0.10 max | 0.05 each 0.15 total |

Typical Mechanical Properties of 3003 / 3003A Aluminium Alloy
| Material | Condition | Tensile Strength (ksi min) | Yield Strength (ksi min) | Elongation % in 2" 0.064 Sheet | Min 90° Cold Bend Radius for 0.064" Thick |
| Alloy 3003-0 Sheet 0.064" thick | 3003-0 | 14-19 | 5 | 25 | 0 |
| Alloy 3003-H12 Sheet 0.064" thick | 3003-H12 | 17-23 | 12 | 6 | 0 |
| Alloy 3003-H14 Sheet 0.064" thick | 3003-H14 | 20-26 | 17 | 5 | 0 |
| 3003-H16 Sheet 0.064" thick | 3003-H16 | 24-30 | 21 | 4 | 1/2 - 1 1/2 T |
| 3003- Sheet 0.064" thick | 3003-H18 | 27 min | 24 | 4 | 1 1/2 -3T |
- 3003 H14 aluminum sheet
3003 h14 aluminum sheet has good processability and can be deep drawn, spun, welded or brazed. This aluminum sheet is widely used for fairing and baffle plating. The ultimate strength is 21000 PSI and the shear strength is 14000 PSI.
- 3003 H18 aluminum sheet
3003 H18 aluminum plate belongs to the aluminum plate that has not been processed after rolling and cold rolling, so it belongs to the aluminum plate that is not quenched and processed. It has a relatively short delivery short.
- 3003 H24 aluminum sheet
3003 H24 aluminum plate occupies 80% of the production of 3003 aluminum sheet. After annealing process, 3003 H24 aluminum plate can be bent at 90 degrees without cracking. Therefore, 3003 H24 aluminum plate is widely used.
- 3003-O aluminum plate
The production and processing steps of 3003-O aluminum sheet are similar to the production process of 3003 H24 aluminum plate. However, the quenching time of the 3003-O aluminum plate is long, and the production process is also relatively long. It is more suitable for stamping molds because it is softer.
Specifications
3003 - O Sheet
AMS 4006
ASTM B 209
QQ-A-250/2
3003 H-14 Sheet
AMS 4008
ASTM B 209
QQ-A-250/2
Typical Applications Of 3003A Aluminium Alloy
Commercial applications for this engineering material include:
- Heat exchangers
- Storage tanks
- Chemical equipment
- Cooking & kitchen equipment
- Corrugated roofing
- Cooking utensils & kitchen equipment







