Classification ferrous products.
Dependiendode the proportion of carbon existing ferrous products are classified as:
• Irons. Those whose carbon is between 0.01 and 0.03% . They are very soft and difficult to obtain, so they have few industrial applications.
• Steel. are alloys of iron-carbon and may contain other chemicals. The carbon is between 0.03 and 1.76% .
• Foundries. are iron-carbon alloys, and may have other chemicals. The carbon ranges from 1.76 to 6.67%.
• Graphite. The carbon is greater than 6.67% . not have applications as they are very fragile.
iron-carbon diagram
is a graphical representation of the behavior of Fe-C alloy as a function of temperature and percentage of carbon, it has from 0% to 6.67% carbon. Draw two axes. On the horizontal axis is representing the percentage of carbon from 0 to 6.67%. In the vertical axis draws the temperatures that go from room temperature up to 1 600 ° C.
fucks that have 0% carbon and heats up to 1600 º C. The chart notes at what temperature it becomes liquid or solid and liquid coexisting (mushy).
Repeat the process with the remaining 666 (each with 0.01% more carbon than before). Uniting all the points you get the iron-carbon diagram. It is noted that:
• Pure iron melts at high temperatures (1530 ° C ).
• As you increase the percentage of carbon (to 4.3% ) decreases the melting temperature. From 4.3% melting temperature begins to rise again.
• The lower melting temperature alloy iron-carbon alloy corresponds to a 4.3% carbon ( 1 130 ° C).
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