As we know, strength refers to the maximum load a material can bear without bending and loosing its shape, and the stiffness refers to the yielding properties of a material, and how much it can bend under a load or when pressure is applied. The parameter to quantify stiffness is called the Modulus of Elasticity. The relative stiffness of steel versus aluminum have no stiffness advantages over each other, as both of the materials can withstand and bear extreme pressure and tons of load.
One difference that steel has compared to aluminum, is that after repeated loads, aluminum will fatigue. Steel has an indefinite fatigue life, which means it has enough strength to withstand repeated load cycles, and hence, it lasts longer, or is preserved.
Steel is heavier than aluminum, as steel is about three times heavier for the same length of aluminum. The tautness or tensile strength of high-grade aluminum is in same ratio as high-grade steel.
Steel, when compared to aluminum, is low tech and slightly destructive, as steel will spark if you use an angle grinder and briefly touch the metal. Once the bit touches steel it will spark, whereas aluminum does not spark. Where deflection is important, aluminum has an edge over steel. Steel has more rebounding properties than aluminum.
Although, where deflection is possibly, steel is preferred because it is easier to weld. Aluminum is nonmagnetic compared to steel, however, some types of steel alloys are also nonmagnetic. If we make this comparison on the basis of the micro-structure of the steel and aluminum, we find that the carbon iron component of iron structures are not magnetic at all. Stainless steel has a very little amount of carbon but a high amount of chromium along with iron.
Different desired properties can be obtained by mixing different metal and non-metal elements with iron in varying amounts. Types of steel according to the different elements present are;. Steel is hard, very strong and ductile. But it is not resistant to corrosion Except for stainless steel, which is made by mixing chromium with iron, which gives the property of corrosion resistance.
Steel easily corrodes when exposed to a moist environment. Therefore rusting is occurs. Figure 2: Rusting of Steel.
Aluminium: Aluminium is a soft metal with a silvery-gray color. Steel: Steel is a metal alloy composed of iron, carbon and few other elements. Aluminium: Aluminium is resistant to corrosion and rusting. Steel: Steel is not corrosion resistant and rusting occurs easily. Aluminium: Aluminium is a soft metal with relatively a low density. Steel: Steel is a hard metal alloy with a high density. Aluminium: Aluminium is a light-weighted metal.
Steel: Steel has a higher weight than aluminium. Steel is stronger compared to aluminum. The amount of carbon in steel makes it heavier and unyielding. The higher amount of carbon in an alloy, the harder it becomes.
Aluminum is used for transportation, packaging, construction, utensils, electric transmission lines, paint, etc.
Steel is used for roads, railways, other infrastructure, appliances, buildings, transportation, aerospace, etc. Heavier compared to aluminum. Carbon steel is heavy. Aluminum is less corrosive. There is no paint or coating to wear or scratch off.
It has a high oxidation and corrosion resistance. When aluminum is oxidized, its surface will turn white and will sometimes pit. Steel is highly corrosive and usually needs paint or treatment to protect it from rust and corrosion especially if it will be in a moist, damp or abrasive environment.
Cost is always an essential factor to consider when making and using any product. The price of both Aluminum and Steel is continually fluctuating based on supply and demand, tariffs, fuel costs and the price and availability of iron and bauxite ore. Typically, steel is generally cheaper per pound than aluminum. Are you in need of steel supplies? Look no further than the professionals at Tampa Steel and Supply.
We stock an extensive list of steel products for whatever project you need to tackle.
0コメント