Marine Grade Aluminum 5086 5456
Marine grade aluminum 5086 is an aluminum-magnesium alloy. It is strengthened not by heat treatment, but by strain hardening or cold working of the material. 5086 alloy is easily welded and retains most of its mechanical strength. 5086 aluminum s the recommended hull material for small aluminum boats and larger yachts. Its high strength and excellent corrosion resistance make it ideal for yachts. 5086 h116 aluminum is a popular choice.
A tugboat refers to a ship used to tow barges and ships. It has firm structure, good stability, small hull, large main engine power, large traction force and good maneuverability. Tugboats can also be made of aluminum alloy. The hull of the American "Sauter" tugboat is welded with 5083 and 5086 alloys, and the manufacturing time is about 30% shorter than that of steel barges.
Al-Mg alloys are used in many countries as hull structural materials. From 1966 to 1971, the United States built 14 "Ashville" class high-speed gunboats. The main deck and bottom plate were made of 12.7mm thick 5086-H32 aluminum alloy, and the profiles were made of 5086-H112 aluminum alloy.
The United States mainly uses 5456 aluminum alloy plate. The Mg content of 5456 alloy is 5 wt%, which is much higher than 3 wt%. This corrosion-sensitive alloy is susceptible to stress corrosion both in plate fabrication and in service. Sensitive stress corrosion can only occur under the combined action of three factors: organizational structure, corrosive medium, and stress.
The marine grade aluminum 5456 can adapt to the long-term humid marine environment, has good corrosion resistance, vibration resistance, and excellent low temperature performance, and the price of the 5456 aluminum plate is relatively reasonable, and the shipbuilding cost is low. 5456 aluminum alloy plate is widely used in shipbuilding, which shows its excellent characteristics.
In shorter aging time, the weight loss of 5456-H116 alloy is almost twice that of 5083-H116 alloy. When the aging time exceeds 150 h, the weight loss of the 5083-H116 alloy is much higher than that of the 5456-H116 alloy, indicating that after the aging time is >100 h, the corrosion sensitivity of the 5456 alloy is much lower than that of the 5083-H116 alloy.
