Traditional Culture Encyclopedia - Traditional stories - China's earliest iron smelting products is Gansu Lintai unearthed in Thailand copper handle steel sword, which shows that in the Spring and Autumn and Warring States period, China has mastered the tec
China's earliest iron smelting products is Gansu Lintai unearthed in Thailand copper handle steel sword, which shows that in the Spring and Autumn and Warring States period, China has mastered the tec
China's earliest iron smelting products is Gansu Lintai unearthed in Thailand copper handle steel sword, which shows that in the Spring and Autumn and Warring States period, China has mastered the technology of iron refining, through the
Steel carbon content of 0.03% -2%, pig iron carbon content of 2% -4.3%, steel can be divided into low-carbon steel, medium-carbon steel, high-carbon steel, high-carbon steel is commonly used to make knives, molds, gauges that the higher the carbon content of the hardness is greater, the conditions of rusting iron and oxygen and water contact at the same time.
The answer is: 0.03%-2%; large; Fe2O3; oxygen and water.
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