Is there iron with a carbon content greater than 6.69?
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Today I looked at the iron-carbon alloy phase diagram and found that the maximum carbon content is 6.69%. Is there any iron with a carbon content higher than 6.69%? What will happen if it exceeds the limit, and what substance will be formed?
The higher the carbon content in iron, the more brittle it becomes, and its machinability deteriorates. Pig iron with a carbon content of around 6% is already very brittle and cannot be forged; it can only be cast. Iron with an even higher carbon content has little practical value, which is why the part of the iron-carbon phase diagram beyond a carbon content of 6.69% is usually omitted. In the iron-carbon phase diagram, iron and carbon can form a series of compounds: Iron-carbon alloys have a carbon content exceeding 6.69%. It has high brittleness._Baidu Wenku, 12 pages in total: http://wenku.baidu.com/link?url=IsQWtYAxrQ0AvPxpGSvw68q6cESuiHSQIOa0_jOanRuMd6puqWkNrv8s5u6E-r7gMpJhOMgNACDZBwOXSXCETj7hkY_yEOO45KVIsev0Koa