«~µP	¦è«n¾T/¬ü¾TAlcoa
³W®æ	»ô¥þ
§÷½è	5052/5086/5083
²£¦a	°ê²£/¶i¤f

5xxx Plate

5XXX series alloys, with magnesium as the major alloying element, combine a wide range of strength, good forming and welding characteristics, and high resistance to general corrosion.

Strength:

Generally increases with increasing magnesium content, and can be further enhanced by cold work.

Forming:

5XXX alloys are easily cold formed. Formability being described by minimum cold bend radii. Formability tends to increase as alloy strength decreases.

Welding:

5XXX alloys are easily welded using GMA-W or GTA-W processes. Weld strength equals the minimum annealed strength (O temper) of the welded 5XXX alloy. Welds also show good ductility, facilitating cold forming.

Corrosion Resistance:

5XXX alloys generally have excellent corrosion resistance, often being used in marine applications e.g. 5083-H116. 5XXX series alloys with greater than 3.5% magnesium (e.g. 5086 & 5083) may be susceptible to stress corrosion cracking (SCC). In service, limitations should be placed on the amount of cold work and maximum permissible operating temperature for the higher magnesium alloys to avoid increased susceptibility to stress corrosion cracking and intergrannular corrosion. Such alloys should not be used at operating temperatures >65¢XC. 5454 and 5754 are manufactured with 2.7% and 3.1% magnesium respectively and are designed for use at elevated temperatures.

Technical Support:

For further information and advice please contact your District Sales Office.

Availability:

5XXX alloys are most commonly available in F (as rolled) or O/H111 (fully soft) condition, although cold worked tempers such as H32, H321 and H116 are also available.

5xxx series alloys technical data

STANDARD DIMENSIONAL AVAILABILITY

With a broad combination of desirable properties 5XXX series alloys are used for many applications.

APPLICATION

Cryogenic applications: production, storage and transportation of liquid petroleum and industrial gases

Pressure vessels

Hulls and superstructures of ships such as fast ferries, naval craft and workboats

Road transport: commercial vehicles and trailers

General Engineering: mechanical components, jigs, fixtures, flat beds, base plates and general tooling.

Most 5XXX alloys are ordered to the fully annealed O condition. H321 and H116 tempers are often used in transport applications. H321 and H116 tempers are work hardened to increase strength. The most widely used 5XXX alloys are 5083, 5086 and 5754.

5754
5083 & 5086
Unlike 5083 and other alloys with more than 3.5%
5083 offers the highest strength of all non heat treatable alloys, containing
magnesium, 5754 is resistant to intergrannular corrosion
approximately 4.5% magnesium, 0.7% manganese and 0.13% chromium.
and stress corrosion cracking after exposure to elevated
5086 is less highly alloyed than 5083, containing approximately 4.0% magnesium,
temperatures (above 65¢XC). For this reason, it is the
0.50% manganese and 0.13% chromium. This results in lower strength but greater
preferred alloy choice for applications involving prolonged
ductility compared to 5083.
exposure to such temperatures, e.g. transportation of hot
5086 is favoured when making fabrications which require greater formability than
liquids.
offered by 5083.

FORMABILITY

Note: Radii expressed as thickness (t) are
minimum recommended for bending plates in
a standard press brake with air bend dies.
Minimum permissible radii will also vary with
design and condition of tooling.