Feddoc, It is not S30V. S30V is a knife steel that is made in flat sheets for knife makers by CPM steel mill who has the patent on S30V.
RELH
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304L stainless steel
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The stainless steel types 304 or 304L are also known as 18/8 stainless because of their chemical composition including approximately 18% chromium and 8% nickel by weight. They are widely used in the food and drink processing industries because they are easy to form and to weld and have a great resistance to corrosion.