Aluminum 5083-H116: High-Strength Marine Aluminum for Shipbuilding
ASTM B928 · Published: 2026-06-03 · Updated: July 2026
Aluminum 5083-H116 is the highest-strength non-heat-treatable aluminum alloy with excellent corrosion resistance in seawater. It is the standard material for ship hulls, LNG tankers, cryogenic tanks, and military armor plate. The H116 temper...
Aluminum 5083-H116 is the highest-strength non-heat-treatable aluminum alloy with excellent corrosion resistance in seawater. It is the standard material for ship hulls, LNG tankers, cryogenic tanks, and military armor plate. The H116 temper provides guaranteed resistance to intergranular corrosion and exfoliation.
Quick Facts
| Category | Aluminum Alloy |
| Standard | ASTM B928 |
| Density | 2.66 g/cm³ |
| Yield Strength | 228 MPa |
| Tensile Strength | 317 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
What makes 5083 superior to 5052 for marine use?
5083 has approximately 18% higher yield strength (228 vs 193 MPa) and significantly better resistance to intergranular corrosion due to controlled magnesium content and the H116 temper's special thermal treatment. It is the specified alloy for welded ship structures under classification society rules (ABS, DNV, Lloyd's).
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu