Q.Why Does Stainless Steel Rust?
When the surface of stainless steel pipe appears brown rust (point), people were surprised. The general perception towards stainless steel is that it is a super alloy that never rusts. However, the reality is that stainless steel does rust. The word “stain-less” does not imply free from stain or “stain-impossible”. It simply means that the alloy stains less. This is exactly the case with stainless steel. When compared to other metals and alloys, stainless steel the most resistant to corrosion. Stainless steel is an outstanding material with its high resistance to oxidation (rust) and corrosion in many different environments. Such as 304 steel pipe, in the dry and clean atmosphere, there is absolutely excellent resistance to corrosion, but it moved to the near sea area, used in a fog which has large amount of salt containing, will get rust rapidly. Therefore, there not have any kind of stainless steel, in any environment can be resistant to corrosion and not rust.
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