Marine grade
aluminum plate can be wrought
aluminium alloy and cast
aluminum alloys according to different manufacturing processes. Because marine grade aluminum has special requirements on strength, corrosion resistance, weldability, etc., it mostly use Al-Mg, Al-Mg-Si and Al-Zn-Mg
aluminum alloy. Of them, Al-Mg
aluminum alloy is most widely used on ships.According to the application, marine grade
aluminum sheet can be
aluminum alloys for hull structures and for outfitting. The
aluminum alloys used for ship hull structures are mainly 5083, 5086 and 5456.6000 series alloy can be used in the superstructure of ships because it has inter-granular corrosion when it directly contacts with sea water. The strength and process performance of the 7000 series alloy after heat treatment are superior to the 5000 series alloy, so it can be used in naval superstructures, such as compression structures and armor plates. However, the shortcoming of 7000
aluminum alloy is its poor resistance to stress corrosion, so it limits the use of this series.This table shows the elements, properties and applications of different marine grade
aluminum sheet. If you like to know marine grade
aluminium sheet price, welcome to contact Haomei Aluminum directly.ItemsAlloyTemperChemical elementPropertiesApplication For Hull5052OH14H34Al:remainder Si:≤0.25Cu:≤0.10Mg:2.2~2.8Zn:≤0.10 Mn:≤0.10Cr: 0.15-0.35Fe：≤0.40Medium strength, good corrosion resistance and formability, high fatigue strengthSuperstructure, auxiliary components, boat hull5083OH32Al：reminderSi：≤0.40Cu：≤0.10 Mg：4.0-4.9Zn：≤0.25Mn：0.40～1.0Ti：≤0.15 Cr：0.05-0.25Fe：0-0.400good weldability, corrosion resistance and low temperature performance, highest strength among non heat-treated
aluminum alloysMain structure of hull5086H32H34 Al：remainder Si：≤0.40Cu：≤0.10Mg：3.5-4.5Zn：≤0.25Mn：0.20-0.7Ti：≤0.15 Cr：0.05-0.25Fe：0-0.500The weldability and corrosion resistance are the same as 5083, and the strength is slightly lower, and the extrudability is improved.The main structure of the hull5454H32H34Al：remainder Si：≤0.25Cu：≤0.10 Mg：2.4-3.0Zn：≤0.25Mn：0.50-1.0Ti：≤0.20 Cr：0.05-0.20Fe：0.000-0.400It has 22% higher strength than 5052, good corrosion resistance and weldability, general formabilityHull structure, pressure vessel, pipeline, etc.5456OH321Al：remainder Si：≤0.50 Cu：3.8-4.9Mg:1.2-1.8 Zn：≤0.30Mn：0.30-0.9 Ti：≤0.15 Ni：≤0.10 Fe：0.000-0.500Fe+Ni：0.000-0.500It is Similar to 5083, but with slightly higher strength and sensitivity to stress corrosionHull and deck6061 T4T6Cu: 0.15-0.4 Mn: 0.15Mg: 0.8-1.2 Zn: 0.25Cr: 0.04-0.35Ti: 0.15Si: 0.4-0.8 Fe: 0.7Al: remainder It can be strengthened by heat treatment. It has high strength, but the welding seam has low strength. It is mainly used for screwing and riveting structures that are not in contact with seawater.Superstructure, partition structure, frame, etc. For outfitting 1050 1200H112OH12H24Al：remainder Si：≤0.25Fe：0.40 Cu：≤0.50Mn：≤0.50 Mg：≤0.50Zn：≤0.15 Ti：≤0.03Low strength, good workability, good weldability and corrosion resistance, high surface treatmentInterior decorationCu：≤0.50Mn：≤0.50Zn：≤0.15 Ti：≤0.03Fe+Si：≤1.03003 3203H112OH12Al ：remainder Si：≤0.60Fe：≤0.70 Cu：≤0.50Mn：1.0~1.5 Zn：≤0.10It has 10%higher strength than 1100, good formability, weldability, and corrosion resistanceInterior decoration,top and side plates of LPG tank