EarthYP Edge Conference in Maui, Hawaii

9 International Way
Longview, WA 98632
(360) 442-4118

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Stainless steel
From Wikipedia, the free encyclopedia
Stainless steel is a group of ferrous alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties. Different types of stainless steel include the elements carbon (from 0.03% to greater than 1.00%), nitrogen, aluminium, silicon, sulfur, titanium, nickel, copper, selenium, niobium, and molybdenum. Specific types of stainless steel are often designated by their AISI three-digit number, e.g., 304 stainless. The ISO 15510 standard lists the chemical compositions of stainless steels of the specifications in existing ISO, ASTM, EN, JIS, and GB (Chinese) standards in a useful interchange table.Stainless steel's resistance to rusting results from the presence of chromium in the alloy, which forms a passive film that protects the underlying material from corrosion attack, and can self-heal in the presence of oxygen. Corrosion resistance can be increased further by the following means: increase chromium content to more than 11% add nickel to at least 8% add molybdenum (which also improves resistance to pitting corrosion)The addition of nitrogen also improves resistance to pitting corrosion and increases mechanical strength.
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EarthYP Edge Conference in Maui, Hawaii