3003 at a glance
Where to buy
Designation
| Item | Value |
|---|---|
| Designation | 3003 |
| Class | Aluminum |
| Type | wrought aluminum alloy |
Composition
| Element | Limit |
|---|---|
| Si | 0.6 |
| Fe | 0.7 |
| Cu | 0.05–0.20 |
| Mn | 1.0–1.5 |
| Zn | 0.10 |
| Al | Remainder |
A single number is a maximum. Other elements: 0.05 each, 0.15 total, except where the Teal Sheets say otherwise. Source: Aluminum Association Teal Sheets (Aug 2018).
Properties
| Property | Value | Source |
|---|---|---|
| Density | 0.099 lb/in³ (2.73 g/cm³) | Teal Sheets |
| Brinell hardness, O / H16 | 28 / 47 | AC 43.13-1B Table 4-5 |
| Tempers | H, strain-hardened | AC 43.13-1B Table 4-4 |
| Fuel tank repair | May be repaired by welding | AC 43.13-1B par. 8-32 |
| Rivets for it | 1100 | AC 43.13-1B par. 7-2c |
3003 is not in MIL-HDBK-5J, and no strength value is given here: use the mill certificate. The AMT Handbook says it contains a small percentage of magnesium; the composition limits show manganese as the main addition.
Forms and thicknesses in stock
| Distributor sheet | Listed | Thickness, in |
|---|---|---|
| 3003H-14 Soft Aluminum Sheet | 0.020"–0.063" · soft | .020, .025, .032, .040, .050, .063 |
As distributors list them, not a statement of what a specification allows.
Notes from the guide
- Not a source of design allowables. Values are for reference. MMPDS and the SRM govern a repair.
- Not a substitution approval. A different alloy or temper needs approved data.
- No strength values here. The public sources used for this site do not print them.
Where to buy
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Sources
- FAA AC 43.13-1B CHG 1, Chapters 4 and 7 — Tables 4-4, 4-5; pars. 7-2, 8-32; p. 9-18.
- FAA-H-8083-31B, AMT Handbook — Airframe, Volume 1, Chapter 4 — p. 4-30.
- Aluminum Association, International Alloy Designations (Teal Sheets), rev. Aug 2018 — chemical composition limits and nominal densities.
- Distributor listings — stock forms, sizes and listed facts, read 30 September 2026.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.