5A02 aluminum square bar/round bar manufacturer china suppli

5A02 aluminium alloy bar is Al-Mg rust-proof aluminium alloy, which can not be strengthened by heat treatment. The magnesium content of the alloy is lower, its plasticity is higher, its forming type is lower, but its strength is higher than that of 3A21 alloy. Cold deformation can increase its strength and decrease its plasticity. The alloy has good corrosion resistance and good weld ability. Its machin ability is poor in annealing state, and Semi-cold Cherry Blossom state can improve the machin ability and polish.
 
 
 
5A02 aluminum square bar/round bar application ：
 
5A02 aluminium alloy is suitable for use in marine environment. Welding structures and containers with high technological plasticity and good corrosion resistance, such as fuel tanks, gasoline and lubricating oil conduits, nails, flanges, light-duty parts, interior decorations of ships and vehicles, etc., wire rods are used as rivets or welding rods.
 
 
5A02 aluminum square bar/round bar mechanical：
 
Tensile strength b(MPa): <147
 
Elongation of 10 (%): ≥14%
 
Note: Mechanical properties of pattern board at room temperature
 
 
 
Heat treatment process of 5A02 aluminum square bar/round bar ：
1) Homogenization annealing: heating 440 C; holding 12-14 h; air cooling.
 
2) Rapid annealing: heating 350-410 C; holding time 30-120 min; air or water cooling.
 
3) High temperature annealing: heating 350-420 C; when the thickness of finished product is more than 6 mm or less than 6 mm, the holding time is 2-10 minutes or 10-30 minutes; air cooling.
 
4) Low-temperature annealing: heating 250-300 C or 150-180 C; holding time 1-2 h, air-cooling