Aluminium Alloy 5086: Marine alloy: bridging 5052 and 5083.
A high-magnesium marine alloy that bridges 5052 and 5083, being stronger than 5052, more formable than 5083, and fully marine-certified.
What is Aluminium Alloy 5086?
Aluminium Alloy 5086 is a high-magnesium marine alloy that sits between 5052 and 5083 in both strength and formability. It is marine-certified under ASTM B928 in tempers H116 and H321, and is widely used for boat hulls, decks and superstructures where the extreme strength of 5083 is not required but corrosion performance must remain marine-grade.
5086 welds with 5356 or 5556 filler. Cold-forms more easily than 5083 and machines well. Specified frequently for cold-formed marine components where 5083 would be too stiff.
Chemical & mechanical data.
Chemical composition
Mechanical properties
How 5086 performs.
Six performance dimensions, rated 1 to 5, to help architects, fabricators and engineers specify with confidence.
Where 5086 is specified.
- Boat hulls and decks
- Marine superstructures
- Cryogenic vessels
- Truck and trailer bodies
- Military / armoured panels
- Pressure equipment
Advantages
- Excellent saltwater corrosion resistance
- Better formability than 5083
- Higher strength than 5052
- Excellent weldability and weld-joint strength
Limitations
- Not heat-treatable
- Sensitisation risk above ~65 °C sustained
5086 is supplied to:
- ASTM B209
- ASTM B928 (marine)
- EN 485-2
Supplied to customer requirement.
Alloy 5086 is available in a full range of thicknesses according to customer requirement, with cut-to-length, slitting and custom configuration on request. Mill test certificates (EN 10204 3.1) are issued with every consignment.
Related aluminium alloys.
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Marine structural plate alloy
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Send your 5086 requirement.
Tell us form (sheet / coil / plate / bar), temper, dimensions and tonnage. We will revert with mill availability and indicative pricing within one working day.