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 ยบ 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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