5086 at a glance
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Designation
| Item | Value |
|---|---|
| Designation | 5086 |
| Class | Aluminum |
| Type | wrought aluminum alloy |
Composition
| Element | Limit |
|---|---|
| Si | 0.40 |
| Fe | 0.50 |
| Cu | 0.10 |
| Mn | 0.20–0.7 |
| Mg | 3.5–4.5 |
| Cr | 0.05–0.25 |
| Zn | 0.25 |
| Ti | 0.15 |
| 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).
Specifications and forms
| Specification | Form |
|---|---|
| AMS-QQ-A-250/7 | Sheet and plate |
| AMS-QQ-A-200/5 | Extruded bar, rod and shapes |
Specifications as listed by MIL-HDBK-5J. Federal QQ-A specifications passed to SAE as AMS-QQ-A. Check the current revision.
Properties
| Property | Value | Source |
|---|---|---|
| Density | 0.096 lb/in³ (2.66 g/cm³) | MIL-HDBK-5J; Teal Sheets |
| Service range | -452 to 150 °F | MIL-HDBK-5J 3.5.3.0 |
| Arc welding | A | MIL-HDBK-5J Table 3.1.3.4(a) |
| Spot welding | B (O), A (H tempers) | MIL-HDBK-5J Table 3.1.3.4(a) |
| E / Ec / G | 10.2 / 10.4 / 3.85 × 10³ ksi | MIL-HDBK-5J Table 3.5.3.0(b) |
Density and moduli are printed once in the handbook table.
Design allowables, 5086 sheet and plate
| Property, ksi | O A | O B | H32 A | H32 B | H34 S | H36 S |
|---|---|---|---|---|---|---|
| Ftu, L | 35 | 36 | 40 | 41 | 44 | 47 |
| Ftu, LT | 35 | 36 | 40 | 41 | 44 | 47 |
| Fty, L | 14 | 15 | 28 | 30 | 34 | 38 |
| Fty, LT | 14 | 15 | 26 | 28 | 33 | 37 |
| Fcy, L | 14 | 15 | 26 | 28 | 32 | 35 |
| Fcy, LT | 14 | 15 | 28 | 30 | 34 | 38 |
| Fsu | 21 | 22 | 24 | 25 | 26 | 27 |
| Fbru, e/D = 1.5 | 52 | 53 | 58 | 61 | 64 | 68 |
| Fbru, e/D = 2.0 | 70 | 72 | 80 | 82 | 88 | 94 |
| Fbry, e/D = 1.5 | 24 | 26 | 39 | 42 | 48 | 53 |
| Fbry, e/D = 2.0 | 28 | 30 | 48 | 51 | 58 | 65 |
O and H32: 0.020–2.000 in. H34: 0.009–1.000 in. H34 and H36 are S basis. AMS-QQ-A-250/7, MIL-HDBK-5J Table 3.5.3.0(b), p. 3-238. S, A and B are the MIL-HDBK-5J statistical bases. L is the longitudinal grain direction, LT the long transverse. Bearing values are dry-pin values.
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.
- Not above 150 °F under constant high stress.
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Sources
- FAA-H-8083-31B, AMT Handbook — Airframe, Volume 1, Chapter 4 — Chapter 5, filler chart.
- MIL-HDBK-5J (31 Jan 2003), Chapter 3 — Sections 3.1.2.3.1, 3.5.3.0; Tables 3.1.3.4(a), 3.5.3.0(a), (b). Cancelled and superseded by MMPDS: check current MMPDS before design use.
- Aluminum Association, International Alloy Designations (Teal Sheets), rev. Aug 2018 — chemical composition limits and nominal densities.
- MMPDS (formerly MIL-HDBK-5) — the current home of design allowables. A repair substantiation cites MMPDS or the SRM, not a website.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.