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不锈钢是一种能够抵抗腐蚀的高合金钢
不锈钢是一种能够抵抗腐蚀的高合金钢.具有美观的表面,不必经过镀色或油漆等表面处理,所以很多机械厂为表明自己的是不锈钢,往往是不作任何油漆处理的,而黑材(所谓黑材就是一般钢铁的称呼)是必须进行防锈处理的。
The so-called stainless steel surface treatment is usually not required to be a kind of black steel surface treatment.
不锈钢的简易分类
Simple classification of stainless steel
不锈钢可以粗浅的分为200系列,300系列和400系列三大类,其中300系列是最常用的,200系列和400系列一定程上是300系列的替代品,而严格来讲400系列不叫不锈钢,叫不锈铁,因为里面不含镍元素,所以用磁铁可以吸引住。而200系列和300系列是有镍的,所以是没有磁性的,吸铁吸不住。
Stainless steel can be roughly divided into three categories: 200 series, 300 series and 400 series. Among them, 300 series is the most commonly used one. 200 series and 400 series are substitutes of 300 series. Strictly speaking, 400 series is not called stainless steel, but stainless iron. Because it does not contain nickel, it can be attracted by magnets. The 200 series and 300 series have nickel, so they are not magnetic, and can not absorb iron.
304是300系列中最常见的品种,所以一般从304的价格变化可以判断出整个不锈钢的价格走势。200系列含镍少,400系列不含镍,300系列含镍最多,所以受镍价影响最大的是300系列。
304 is the most common variety in 300 series, so the price trend of the whole stainless steel can be judged from the price change of 304. The 200 series contains less nickel, the 400 series does not contain nickel, and the 300 series contains the most nickel, so the 300 series is most affected by the nickel price.
300系列可以简分为304、304L、316、316L、321、309S、310S等等,区分的依据是各种金属元素的含量不同,含量不同的不锈钢的特性也不相同,304和304L的区别在于碳(C)含量的不同,带L的是表示含碳低,也叫低碳,316和316L的区别也是一样。
300 series can be simply divided into 304, 304L, 316, 316L, 321, 309S, 310S and so on. The distinction is based on the different contents of various metal elements and the characteristics of stainless steel with different contents. The difference between 304 and 304L lies in the difference of carbon (c) content. The one with L indicates low carbon content, also known as low carbon, and the difference between 316 and 316L is the same.

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