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生铁砝码、熟铁砝码和钢砝码的正确区分
生铁、熟铁和钢的主要区别在于含碳量上,含碳量过 2% 的铁,叫生铁;含碳量低于 0.04% 的铁,叫熟铁;含碳量在 0.05~2%之间的铁,称为钢。 其实,生铁是种含碳量于 2.11% 的铁碳合金。工业生铁的含碳量般在 2.5%~4% 之间,并含有 Si 、Mu 、S 、P 等元素,是用铁 ...
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