# 5086 aluminum

5086 alloy identity, temper and product-form distinctions, marine testing, forming and welding boundaries.

Reviewed: 2026-11-01

Tags: materials, aluminum, aluminum-magnesium, marine

## Identity and selection

In Hulamin's 5086-H116 table an **8 mm** plate falls in **over 6.30 through 12.50 mm**, at **195 MPa minimum yield**, **275–360 MPa tensile**, and **10% minimum elongation**. A **6.30 mm** plate falls in the preceding band, at **8%** elongation. Use the ordered specification to accept the actual plate. [Hulamin H116 properties](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

**5086** is a registered wrought aluminum–magnesium alloy. The Aluminum Association's **Teal Sheets, revised December 2025**, specify **3.5–4.5% magnesium**, **0.20–0.70% manganese** and **0.05–0.25% chromium** by mass. Maximum silicon, iron and copper are 0.40%, 0.50% and 0.10%, respectively; aluminum is the remainder subject to the other-element limits. These identify the alloy, not the strength of an unspecified product. [Aluminum Association 5086 registration](https://www.aluminum.org/sites/default/files/2026-01/Teal%20Sheets%20December%202025.pdf)

Hulamin lists marine, transportation and structural-platform applications for its rolled 5086 offering. Such application examples help with material selection but do not establish vessel approval, a pressure rating or suitability for every chemical exposure. Retain **alloy, temper, product form, dimensions, specification/edition, finish and required inspection** in the purchase description. [Hulamin 5086 rolled-product data](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

Do not substitute 5083, 5052 or a similar-looking marine sheet on alloy-family similarity alone. Review the complete specification, required properties and fabrication route. A material certificate must correspond to the actual delivered product and lot.

## Temper and product form

The Australian Aluminium Council's **Rolled Products Manual, January 2024**, distinguishes annealed O from strain-hardened H conditions. H3 denotes strain hardening followed by stabilization; the final 2 in H32 denotes quarter-hard. Stabilization does not turn a non-heat-treatable alloy into a precipitation-hardening material or authorize a T6 aging route. [AAC temper definitions, pp. 9–10](https://aluminium.org.au/wp-content/uploads/2024/02/Rolled-Products-Manual-Final-Version-Feb24.pdf)

Marine rolled product and drawn pipe illustrate why the full callout matters. Hulamin's sheet presents **H116** rolled properties, whereas Alaskan Copper's catalog separately offers **5086-H32 drawn seamless pipe** in Schedule 40 and 80, citing WW-T-700/5. The catalog is evidence for that product description, not a current specification review or proof that H32 pipe meets H116 rolled-product requirements. [Hulamin H116 table](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf), [Alaskan Copper pipe catalog, p. 19](https://www.alaskancopper.com/pdf/al/5086_pipe.pdf)

For pipe, preserve nominal pipe size, outside diameter, wall/schedule and actual order specification separately. A nominal size is not necessarily the measured outside diameter. For plate or sheet, preserve thickness-band endpoints, rolling direction and specimen basis when using property tables.

## Scoped mechanical-property reference

Hulamin's undated 5086 datasheet publishes these **H116 rolled-product** entries. Its yield column is explicitly a minimum and its tensile column is a range. The elongation column is labeled E (%); the short sheet does not state a gauge length there, so do not silently relabel it A50 or 4D. Confirm the current ordered standard and test basis. [Hulamin mechanical-property table](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

| Thickness as printed | Minimum yield strength | Tensile strength | Elongation entry |
| --- | --- | --- | --- |
| >1.60 to 6.30 mm | 195 MPa | 275–360 MPa | 8% |
| >6.30 to 12.50 mm | 195 MPa | 275–360 MPa | 10% |
| >12.50 to 50 mm | 195 MPa | 275–360 MPa | 9% |

## Marine corrosion evidence

The Aluminum Association's **May 2009 Table 3.3**, footnote 8, distinguishes H116/H321 products requiring demonstrations of intergranular and exfoliation corrosion resistance from H32 products with different corrosion-testing requirements. It expressly prohibits substituting H32 for H116 or H321 on similar tensile properties alone. The table includes 5086 H32 and H116 entries; preserve that distinction rather than treating “marine aluminum” as a complete material grade. [Aluminum Association comparative characteristics and footnotes](https://www.aluminum.org/sites/default/files/2022-12/Table_3.3.pdf)

A corrosion-resistant alloy description does not establish an immersion lifetime or eliminate the need to assess crevices, dissimilar-metal contacts, coatings, fluids and operating temperature. For a marine order, identify the governing product specification, temper, required corrosion tests and certification scope. Link the supplied evidence to the actual lot instead of inferring approval from an application list.

## Forming and joining

Hulamin's H116 reference lists bend radii of **1.5t at 3.2 and 4.8 mm thickness**, and **2.5t at 8.0 mm**, with t denoting thickness. Treat them as source-specific forming guidance: the short sheet does not define a complete bend procedure or orientation. [Hulamin bend entries](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

**Illustrative arithmetic:** 2.5 × 8.0 mm gives a 20 mm radius. This calculation does not determine die opening, bend allowance or springback. Qualify the actual temper, gauge, rolling direction, tooling and bend sequence, then inspect representative parts for cracking, thinning and surface damage.

Hulamin identifies TIG/MIG welding and suggests **5183 or 5356** filler. Select the final filler and procedure for both joined materials, required strength, finish and service conditions; that supplier guidance is not a qualified procedure for every joint. [Hulamin welding guidance](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

ESAB's **September 19, 2024** article explains how welding can remove strain-hardening effects in non-heat-treatable aluminum's heat-affected zone. Evaluate weld metal, HAZ and unaffected parent metal separately. Do not apply an incoming H-temper strength to the entire weldment or assume artificial aging will restore cold-work strength. [ESAB HAZ explanation](https://esab.com/us/nam_en/esab-university/articles/discover-how-arc-welding-affects-the-haz-of-the-weld/)

## Estimation and release

Using Hulamin's density of **2.66 g/cm³ at 20°C**, an uncoated nominal **1,000 × 500 × 8 mm** blank has an illustrative mass of **0.004 m³ × 2,660 kg/m³ = 10.64 kg**. This excludes dimensional tolerances, cutouts and finishes. Use actual dimensions for handling and procurement calculations. [Hulamin physical properties](https://www.hulamin.com/sites/default/files/downloads/5086%20Data%20Sheet.pdf)

Preserve lot identity through cutting and joining. Release against the ordered specification, required mechanical/corrosion evidence, dimensions and final-part inspection. Keep thermal processing, substitutions and qualified fabrication conditions with the part record. The supplier sheet and catalog cited here are undated; upload paths and search-engine dates are not treated as publication revisions.

## Related reference

[Grades, tempers and conditions](../grades-tempers-and-conditions.md)