Marine Grade Aluminum
According to their applications, aluminum alloys for ships can be divided into aluminum alloys for hull structure and outfitting aluminum alloys. Aluminum alloys used for hull structure are mainly 5083, 5086, and 5454 aluminum. 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 profiles. 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.
Our Marine Grade Aluminum For Sale
Marine Aluminum alloy can be classified according to product categories, such as plates, profiles, tubes, rods, forgings and castings. Our company’s current aluminum alloy product categories are mainly aluminum sheet, aluminum strip, aluminum coil, aluminum bar, aluminum profile.
The thickness of the plate 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 plate, but should also consider the depth of plate corrosion in the use of time.
The plates we usually use are thin plates of more than 1.6mm and thick plates of more than 30mm. In order to reduce welding, often use 2.0m wide aluminum plate, large ships use 2.5m wide aluminum plate, the length is generally 6m, but also according to the shipyard contract to use some special specifications of the plate. For non-slip, the deck can be patterned plate.
Types of Marine Grade Aluminum
Aluminum alloys 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 compared to 5052 aluminum, 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 Alloy 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 |