There are 2 types of strengths that materials can be tested on: Comprehensive strength and Ultimate Tensile strength. Ultimate Tensile strength is measured by how much stress can a material withstand, while being stretched or pulled apart before breaking, while comprehensive strength is how much van the material resists while being pushed in (together). There is also a Yield Strength- the point at which the material starts to slowly break and cannot come back to it’s shape. Before the yield point of a material, it can come back to it’s shape. The following Ultimate Tensile strengths for 3 materials are: Copper- 220MPa , Aluminium- 40-50MPa , Iron- 3MPa. The following Yield strengths for 3 materials are: Copper- 70MPa , Aluminium- 15-20MPa , Iron- -. It can be said that copper is the strongest metal on it’s own, while aluminium is next and iron is the least. However, people can use iron as an alloy to create steel, which can be stronger up to 10x
Most of the metals in Periodic Table have high malleability. This also includes iron, aluminium and …show more content…
When steel being covered with zinc, zinc will corrode itself, therefore protecting the steel. But, because people didn’t cover Sydney Harbour Bridge in zinc, and the process of covering it, takes a lot of hard work and money, people came with another cheaper solution- painting it. Paint effectively ‘seals’ steel from the atmosphere, therefore, prevents it from corrosion. But there is 1 problem with this method- the sun’s light and weather affect the paint in negative way; additionally, it does not protect the exposed steel. This is why, paint layers always get replaced (people remove and repaint Sydney Harbour Bridge). Also, people always replace these layers, because old layers of paint were harmful to the environment. (https://sydney-harbour-bridge.nesa.nsw.edu.au/engineering-studies/corrosion.php
Most of the metals in Periodic Table have high malleability. This also includes iron, aluminium and …show more content…
When steel being covered with zinc, zinc will corrode itself, therefore protecting the steel. But, because people didn’t cover Sydney Harbour Bridge in zinc, and the process of covering it, takes a lot of hard work and money, people came with another cheaper solution- painting it. Paint effectively ‘seals’ steel from the atmosphere, therefore, prevents it from corrosion. But there is 1 problem with this method- the sun’s light and weather affect the paint in negative way; additionally, it does not protect the exposed steel. This is why, paint layers always get replaced (people remove and repaint Sydney Harbour Bridge). Also, people always replace these layers, because old layers of paint were harmful to the environment. (https://sydney-harbour-bridge.nesa.nsw.edu.au/engineering-studies/corrosion.php