5052 aluminum plate is AL-Mg series alloy aluminum plate, which is a kind of anti-rust aluminum widely used. Aluminium alloy 5251 contains nominally 2.0% magnesium & 0.30% manganese. It has good workability, medium static strength, high fatigue strength, good weldability, and very good corrosion resistance, especially in marine atmospheres. It also has the low density and excellent thermal conductivity common to all aluminium alloys. It is commonly used in sheet, plate and tube form.
Composition and Mechanical Properties
- Tensile strength (σb): 170～305MPa
- Conditional yield strengthσ0.2 (MPa)≥65
- Elastic modulus (E): 69.3～70.7Gpa
- The annealing temperature is: 345°C.
Circuit Board,Construction , Decoration, Boat
- Road Signs
- Architectural Paneling
- Welded Tubes
- Chemical Industry
- Desalination units
- Pressure Vessels
Description Aluminium 5251 is an aluminium magnesium manganese alloy which can be hardened by cold work: it is not heat treatable to higher strength. It is about mid way through the series of aluminium magnesium alloys for alloying content and strength, which is very similar to alloy 5052.
Corrosion Resistance 5251 has the same high resistance to general corrosion as other non heat treatable aluminium alloys. It also has the higher resistance to slightly alkaline conditions common to the 5000 series alloys. The resistance of 5251 to corrosion in marine atmospheres is excellent, exceeding that of 5005, hence the frequent use of 5251 in marine applications such as small boats and dinghies.
The corrosion resistance of aluminium alloys relies on a protective surface oxide film, which when damaged is readily repaired by the rapid reaction between aluminium and oxygen. However, the high reactivity of the base metal can give rapid corrosion if the film cannot be repaired, so aluminium alloys are not suitable for use with reducing media. 5251 can be anodised to improve the corrosion resistance by thickening the protective surface film.
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