5086 is an aluminium alloy, primarily alloyed with magnesium. It is not strengthened by heat treatment, instead becoming stronger due to strain hardening, or cold mechanical working of the material.

5086-H32 Aluminum Sheet is frequently found in marine applications, with higher strength capacity than Aluminum Alloy 5052 or Aluminum Alloy 5083. Aluminum Alloy 5086 has superior corrosion resistance and good formability. Aluminum Alloy 5086 is non-magnetic and heat treatable
5086-H32 Aluminum Sheet have even higher strength than 5052 or 5083 and its mechanical properties vary significantly with hardening and temperature. It is not strengthened by heat treatment; instead, it becomes stronger due to strain hardening or cold working of the material. This alloy can be readily welded, retaining most of its mechanical strength. The good results with welding and good corrosion properties in seawater make Alloy 5086 extremely popular in marine applications. Alloy 5086 has been used in vehicle armor plate due to its high strength factor.