5052-H32 Aluminum Alloy: Marine-Grade Weldable Sheet
ASTM B209 · Updated: 2026-05-25
5052-H32 is a non-heat-treatable aluminum-magnesium alloy (2.2-2.8% Mg) with the highest strength of the common non-heat-treatable sheet alloys. The H32 temper (strain-hardened and stabilized) provides an optimum balance of strength, formability, and corrosion resistance. 5052 is the workhorse marine-grade aluminum—used for boat hulls, fuel tanks, pressure vessels, and chemical storage tanks. Excellent resistance to saltwater corrosion and good weldability with ER5356 filler. Cannot be heat-treated; strength is achieved through cold work (strain hardening).
Quick Facts
| Category | Aluminum Alloy |
| Standard | ASTM B209 |
| Density | 2.68 g/cm³ |
| Yield Strength | 193 MPa (28 ksi) |
| Tensile Strength | 228 MPa (33 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN AW-5052 | Compare |
| AlMg2.5 | Compare |
| A5052 | Compare |
| AA5052-H32 | Compare |
| ISO AlMg2.5 | Compare |
Related Materials
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Frequently Asked Questions
How does 5052 compare to 6061 for marine use?
5052 has superior corrosion resistance in saltwater and better formability for complex hull shapes. 6061-T6 offers higher strength for structural components but requires more corrosion protection in immersion service. Many aluminum boats use 5052 for hull plating and 6061-T6 for internal structure. Both weld well with ER5356 filler.