Difference between revisions of "9. What two metals were combined to make bronze? What effect of bronze on armaments?"
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Return to [[*History 8 The End of the Stone Age Video Notes]] | Return to [[*History 8 The End of the Stone Age Video Notes]] | ||
| + | The introduction of bronze was a huge improvement in tool and weapon manufacture. Unlike iron which was a difficult material to work with, bronze technologies were similar to the techniques improved during the copper age: It could be cast, hammered cold, and annealing improved its toughness. | ||
| + | Bronze is an alloy of copper and of about 4% tin. It is harder than pure copper, melts at a lower temperature and is easier to cast. But when the amount of tin is 5% or higher the alloy becomes brittle when hammered and has to be annealed frequently. | ||
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| + | http://www.reshafim.org.il/ad/egypt/trades/metals.htm | ||
Revision as of 22:52, 18 January 2016
Return to *History 8 The End of the Stone Age Video Notes The introduction of bronze was a huge improvement in tool and weapon manufacture. Unlike iron which was a difficult material to work with, bronze technologies were similar to the techniques improved during the copper age: It could be cast, hammered cold, and annealing improved its toughness.
Bronze is an alloy of copper and of about 4% tin. It is harder than pure copper, melts at a lower temperature and is easier to cast. But when the amount of tin is 5% or higher the alloy becomes brittle when hammered and has to be annealed frequently.
