Stainless steel screw 316 or 304 screw?
Stainless steel screws 316 and 304 are, of course, 316 better.
The composition of the two stainless steel screws is only 316 to more than 304, Mo elements, its corrosion resistance, high temperature resistance better than 304 stainless steel, and other properties are almost the same.
From corrosion resistance, 304 is certainly 316 good, from the price point of view, 316 is also more expensive than 304, but from the use of speaking, it depends on the design of the design staff, only the design requirements are the best screws. In addition, from the savings of funds, energy saving point of view, you can use 304 place as much as possible to use 304, so you can not say 304 and 316 screws who is better, can only say that the most suitable is the best.
304 is the cover type stainless steel, the material composition is OCr18Ni9316L, is the austenitic stainless steel; 316 material composition is OOCr12Mo2Ti, is a kind of titanium containing low carbon stainless steel, alkali, acid fast (chlorine ion medium except).
316, mainly used in the food industry and surgical equipment, adding molybdenum elements to obtain a special structure of corrosion resistance. Because of its better resistance to chloride corrosion than 304, it is also used as "ship steel". Refer to
