英语翻译
题目
英语翻译
Steel is an alloy of iron and carbon with other elements added to produce specific properties.the various types of steel can be grouped under two major headings.
carbon steel .a steel in which the main alloying element is carbon .carbon steels are further divided into three groups .
low carbon steel .this steel has a carbon content of less than 0.30 percent .it is the most common type and is often called mild steel .it is relatively inexpensive .ductile,soft ,and is easily machined and forged.mild steel cannot be heat-treated .low carbon steel is a general purpose steel.
Medium carbon steel.this steel has a carbon content between 0.3 percent and 0.8percent .harder and stronger than mild steel ,it can be hardened by heat treating.medium carbon steel is most commonly used for forgings,castings ,and macheined parts for automobiles ,agricultural equipment ,machines ,and aircraft .
High carbon steel .this type of steel is easlily heat-treated to produce a strong ,to
答案
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