Marine Grade Aluminum
Manufacturing Process
Forging
Marine Aluminum Product
Marine Grade Aluminum
Marine grade aluminum can be classified according to product categories, such as plates, profiles, tubes, rods, forgings and castings. Our company’s current marine aluminum product categories are mainly marine grade aluminum sheet, aluminum strip, aluminum coil, aluminum bar, aluminum profile.
7000 Aluminum
7000 alloys are more superior to 5000 alloys in terms of heat treatment, and their application prospects in shipbuilding are promising. Process performance than the 5000 series alloy is also superior. In the shipbuilding application prospects, it is broad and mainly used in the ship superstructure, such as extrusion structure, armor plate, etc. But the shortcomings of the 7000 series alloy are its poor resistance to stress corrosion, so it restricts the use of the alloy range.
Marine Aluminum Alloy
According to their applications, aluminum alloys for ships can be divided into aluminum alloys for hull structure and outfitting aluminum alloys. This includes popular aluminum alloys such as 5082 H32, 5083-O H111, 6061 T6 (0.5-190mm), 6061 T651 (8-205mm), 6062 T6 (1-190mm), and various marine-grade aluminum alloys.
6000 alloys are mainly used for the upper structure of ships due to intergranular corrosion in seawater, outfitting aluminum alloys are mainly used for extruded aluminum profiles.
Our Marine Grade Aluminum For Sale
The thickness of the marine grade aluminum sheet used is determined by the hull structure, ship specifications, the use of parts, and so on. From the point of view of a lightweight hull, generally try to use a thin sheet, but should also consider the depth of sheet corrosion in the use of time.
The aluminum sheets we usually use are thin sheets of more than 1.6mm and thick sheets of more than 30mm. In order to reduce welding, often use 2.0m wide aluminum sheet, large ships use 2.5m wide aluminum sheet, the length is generally 6m, but also according to the shipyard contract to use some special specifications of the marine grade aluminum sheet. For non-slip, the deck can be patterned plate.
Marine Grade Aluminum
Types of Marine Grade Aluminum
Marine Aluminum for Hull Structure
| Alloy | Temper | Main Purpose | Features |
| 5052 | O, H14, H34 | ship superstructure, auxiliary components, small boat hulls | Medium strength, good corrosion resistance, excellent formability, and high fatigue strength. |
| 5083 | O, H32 | Main hull structure | Typical aluminum alloy for welding, highest strength among non-heat-treated alloys, good weldability, corrosion resistance and low-temperature properties |
| 5086 | H32, H34 | Hull main structure (thin-walled, wide, extruded profiles) | Weldability and corrosion resistance are the same as 5083 aluminum, with slightly lower strength and improved extrudability. |
| 5454 | H32, H34 | Hull structures, pressure vessels, piping, etc. | It has 22% higher strength than marine grade aluminum 5052, good corrosion resistance and weldability, and average formability. |
| 5456 | O, H32, 1 | Ship Hull and Deck | Similar to 5083 but is slightly stronger and has stress corrosion sensitivity |
| 6061 | T4, T6 | Hull superstructures, bulkhead structures, frames, etc. | A heat-treatable corrosion-resistant alloy with high strength, but with lower weld joint strength. It is primarily used for threaded and riveted structures that do not come into contact with seawater. |
Marine Outfitting Aluminum Alloy
| Alloy | Temper | Main Purpose | Features |
| 1050, 1200 | H11, 2O, H12, H24 | - | High surface treatability |
| 3003, 3203 | H11, 2O, H12 | Ship’s interior, top and side panels of LPG tanks | It has 10% higher strength compared to 1100 aluminum, along with good formability, weldability, and corrosion resistance. |
Marine Aluminum Application Table
| Applications | Aluminum Grades | Product Types |
| Shipboards/Hull Bottoms | 5083,5086,5456,5052 | Aluminum Plate, Profile |
| Keels/Frames | 5083 | Aluminum Plate |
| Ship’s Ribs/Frames Ribs | 5083 | Aluminum Plate, Profile |
| Ribbed Plates/Bulkhead | 5083,6061 | Aluminum Plate |
| Pedestals of Engines | 5083 | Aluminum Plate |
| Ship Decks | 5052,5083,5086,5456,5454,7039 | Aluminum Plate, Profile |
| Rudder House | 5083,6N01,5052 | Aluminum Plate, Profile |
| Ship Bulwark | 5083 | Aluminum Plate, Profile |
| Smokestack | 5083,5052 | Aluminum Plate |
| Carrier plates and side plates of vessels | 3003,3004,5052 | Aluminum Plate |
| Marine Porthole | 5052,5083,6063,AC7A | Aluminum Profiles, Castings |
| Gangway ladder | 5052,5083,6063,6061 | Aluminum Profiles |
| Mast | 5052,5083,6063,6061 | Aluminum Tube, Rod, Profiles |
| Structural Material for Maritime Shipping Containers | 6063,6061,7003 | Aluminum Profiles |
| Ship Engine and other marine components | AC4A,AC4C,AC4CH,AC8A | Aluminum Castings |