铁是银白色的金属。原子序数26，相对原子质量55.8，熔点1535℃，沸点3000℃，化合价为+2，+3，相对密度7．9，济钢一级代理有很好的延展性。纯铁磁化和退磁都很快。真正的纯铁在空气中不起变化，普通的铁都含有一定的杂质，在潮湿空气中很快生锈，而且铁锈是疏松的，对底层基材无保护作用，会逐渐锈蚀。铁溶于大多数无机酸中，只有浓硫酸是例外。

Iron is a silvery white metal. Atomic number 26, relative atomic mass 55.8, the melting point of 1535 DEG C, the boiling point of 3000 DEG C, valence +2, +3, relative density 7.9, Jinan level agents have good ductility. The magnetization and demagnetization of pure iron are very fast. Pure iron does not change in the air, ordinary iron contains a certain amount of impurities, rust quickly in humid air, and rust is loose, there is no protective effect on the base material, will gradually rust. Iron is dissolved in most inorganic acids, only concentrated sulfuric acid is an exception.

济钢一级代理因铁易锈蚀，不可能用作电镀表面层。所以镀铁一般应用在修复尺寸或为减低镀硬铬层厚度而作底层(铁的电沉积比铬快得多)。铁是人类社会生活中不可缺少的金属。含碳1.7％以上的称生铁，含碳0.2％以下的称熟铁，含碳0.2％～l.7％的称为钢。

The first grade agent of Jinan Iron and Steel Co., Ltd. can not be used as electroplating surface layer because iron is easy to rust. Therefore, iron plating is generally used to repair size or to reduce the thickness of hard chromium plating as the bottom layer (iron electrodeposition is much faster than chromium). Iron is an indispensable metal in human social life. Carbon containing more than 1.7% of the iron carbon containing less than 0.2% of the known wrought iron, carbon 0.2% ~ l.7% called steel.

钢铁是工业的重要支柱。在轻工业、重工业以及日用品上都得到大规模的应用。根据各种不同需要，有几千种牌号的合金钢，能做到耐高温、耐高压、耐腐蚀和特硬等，如钨钢、锰钢、工具钢和不锈钢等。

Iron and steel is an important pillar of industry. It has been widely used in light industry, heavy industry and daily necessities. According to the various needs, there are thousands of kinds of alloy steel, can achieve high temperature and pressure resistant, corrosion and hard, such as tungsten steel, manganese steel, tool steel and stainless steel etc..

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