Marine grade stainless
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Marine Grade Stainless is a stainless steel rated for use in marine environments to avoid pitting corrosion. The actual AISI number grade is 316 and refers to the chromium content.
The salinity contained with the oceans acts as a catalyst to the rusting process, therefore a higher quality stainless steel is used on marine vessels.
While the steel is not completely rust-proof, the alloy is more resistant than household stainless steels, and hence more expensive.
Very few countries and mills make marine grade stainless. Japan, Germany and South Korea are three.
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