不锈钢基本都含有一种很重要的元素：镍。这也是201和304很大的区别之一，201的镍含量很低，几乎没有。部分人区别不锈钢就是用磁铁吸一下，能吸上来的就不是不锈钢，但是这个办法很笼统也不全面，更不严谨。通常不锈钢都有其物理性能，201的硬度比较高，比304更硬。从现在市场售价来看，201的不锈钢市场价格与304要低。201虽然其性能一般，但是可以表面处理后在出售，因为其价格比较低，一般应用在室内的装修，其性能一般能满足简单的的装饰需要。
Stainless steel basically contains a very important element: nickel. This is also one of the big differences between 201 and 304, which is very low in nickel and has almost no nickel. Some people distinguish between stainless steel is to use a magnet suction, can suck up is not stainless steel, but this method is very general and not comprehensive, more not rigorous. Usually stainless steel has its physical properties, 201 hardness is higher, harder than 304. From the current market price, 201 stainless steel market price and 304 to be lower.201 Although its performance is general, but can be sold after surface treatment, because its price is relatively low, generally used in indoor decoration, its performance can generally meet the needs of simple decoration.
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