Galvanized Sheet Metal Vs Aluminum

The upper limit of the operating temperature of aluminum is 85 c.

Galvanized sheet metal vs aluminum.

Galvanized steel has better corrosion resistance. What happens when i put galvanized steel together with aluminum parts or put aluminum sheets on galvanized steel studs. Steel can be used for structural roofing and architectural roofing. Aluminium should last longer than galvanized steel.

This is due in part to the fact that the steel is coated in a thin layer of zinc to prevent rusting. However aluminum resists it slightly better than galvanized steel. The aluminum is added to improve the adhesion between the coating and the steel substrate during formation. This is achieved through a multi step process where a steel sheet is immersed in pure molten zinc at a very high temperature bonding the zinc to the steel.

Galvanized and galvalume steel roofing. Steel has higher strength at high temperatures which is important in case of fire and aluminum dramatically reduces strength at t 200 c. Architectural roofing does not require structural integrity in the construction assembly. Galvanized steel has a porous and rough surface which is difficult to clean.

There are many aluminum understructures with galvanized steel exteriors built over the past half century. Aluminum is a silvery white soft nonmagnetic ductile metal. Stainless is considered 100 year compatible but is very expensive and relatively difficult to fabricate in the field. To help this blog will explain the gauge system and features a sheet metal gauge chart.

Smacna s manual lists the pros and cons of a range of flashing materials including stainless steel copper lead aluminum and galvanized steel. Aluminum vs steel cost. Galvanized steel is expected to last about 15 to 20 years but aluminum should last over 20 years in the right environment cons aluminium is durable but it has a tendency to dent if hit by ladders tree limbs ice or hail. Galvanized steel is essentially pure zinc with a very small percentage of aluminum.

Cost and price are always an essential factor to consider when making any product. The chart below shows the electrode potentials of metals in seawater. Aluminum is a metal whereas galvanized steel is obtained by a hot dipping process in which carbon steel is dipped into zinc. However steel is generally cheaper per pound than aluminum see galvanized vs stainless for more info on steel.

Both metals can be used for roofing. Aluminum is primarily used for architectural roofing. At the same thickness steel is 2 5 3 0 times stronger. This is due in part to the fact that the steel is coated in a thin layer of zinc to prevent rusting.