Captain Gh3y
Rhinorhondothackasaurus
"Stainless steels all contain at least 10.5% chromium, which gives them a high resistance to corrosion. Chromium forms a thin, invisible, inert film of chromium oxide on the surface of the steel. Any damage to this film is quickly repaired. As the percentage of Chromium increases so does the resistance of the steel to corrosion".
and,
"Steel refers to a large group of alloys containing iron and carbon with varying amounts of a number of other elements".
None of the HSC papers so far have asked about different types of steel, with reference to specific kinds (eg. wrought, pig iron...) but there has been
"Describe the effect of adding other elements to iron on the properties and uses of steels", 5 marks.
The syllabus says:
"Identify the composition of steel and explain how the percentage comosition of steel can determine its properites"
"Gather and process information from secondary sources to compare the composition, properties and uses of a range of steels"
and,
"Steel refers to a large group of alloys containing iron and carbon with varying amounts of a number of other elements".
None of the HSC papers so far have asked about different types of steel, with reference to specific kinds (eg. wrought, pig iron...) but there has been
"Describe the effect of adding other elements to iron on the properties and uses of steels", 5 marks.
The syllabus says:
"Identify the composition of steel and explain how the percentage comosition of steel can determine its properites"
"Gather and process information from secondary sources to compare the composition, properties and uses of a range of steels"
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