Metals & alloys · Aluminium alloys

5083-H131 armour aluminium plate

A strain-hardened 5083 aluminium armour plate condition used for lightweight structural and ballistic protection systems.

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Overview

Constituent	Min	Max	Typical
Mg	4	4.9	4.5
Mn	0.4	1	0.7
Cr	0.05	0.25	0.15
Fe		0.4	0.2
Si		0.4	0.2
Al			Balance

Property	Value	Unit	Condition
Density	2.66	g/cm³	Representative; verify product form and condition
Elastic modulus	71	GPa	Representative; verify product form and condition
Yield strength	~250–300	MPa	thickness dependent
Tensile strength	~330–380	MPa	Representative; verify product form and condition
Elongation	8–14	%	Representative; verify product form and condition
Protection role	structural armour		qualification dependent

named condition

Condition embedded in the canonical material designation.

Product form, thermal history and manufacturing route materially affect performance.

Ballistic acceptance depends on thickness, lot and test protocol—not nominal chemistry alone.
Welding procedure and heat-affected-zone softening require design allowances.

System	Designation	Note
MIL-DTL	46027	armour plate; verify current revision
AA	5083-H131

Confirm the applicable specification, product form and condition before using values for design or procurement.

Availability and lead time depend on grade, product form, certification and regional supply chain.

Segregated recovery and closed-loop recycling improve material efficiency where practical.