with a wide range of properties, aluminium profile are used in engineering structures. Alloy systems are classified by a number system or by names indicating their main alloying constituents.
aluminium alloys vary widely because of its features
The strength and durability of aluminium alloys vary widely, not only as a result of the components of the specific alloy, but also as a result of heat treatments and manufacturing processes. A lack of knowledge of these aspects has from time to time led to improperly designed structures and gained aluminium a bad reputation.
Unlike steels, aluminium alloys have no well-defined fatigue limit. Engineers must assess applications and design for a fixed and finite life of the structure rather than infinite life.
aluminium alloys is sensitivity to heat
Unlike steel, melts without first glowing red. Manual blow torch operations require additional skill and experience. Aluminium alloys are subject to internal stresses after heat operations, such as welding and casting. The lower melting points of aluminium alloys make them more susceptible to distortions. Stress can be relieved and controlled during manufacturing by heat-treating the parts in an oven, followed by gradual cooling—in effect annealing the stresses.
The low melting point of aluminium profile supplier
has not precluded use in rocketry, even in combustion chambers where gases can reach 3500 K. The Agena upper stage engine used cooled aluminium in some parts of the nozzle, including the thermally critical throat region.