Study of extrapolation method mainly from two aspects: one is from uns s32760 plate experimental data, summed up the metallic materials find empirical formulae, outside with long-term results; From the study the microscopic process of the persistent strength and high temperature enduring strength, establish the relation formula of stress, temperature and fracture time is used to guide the extrapolation.
Now commonly used two kinds of * * * - to provide you with stainless steel plate, stainless steel plate information (or corresponding to Germany/Europe mark 1.4308, 1.4408), on the chemical composition of the main difference is that 316 l * * * including Mo, and generally accepted, the 316 has better corrosion resistance, more than 304 under the environment of high temperature corrosion resistance. So under the environment of high temperature, the engineer usually choose 316 l material components. But no absolute, the so-called things under the environment of sulfuric acid, high temperature also don't otherwise it would be the big. Learn machinery are studied thread, remember to prevent thread killed below high temperature circumstance, need to apply a black solid lubricant, molybdenum disulfide (MoS2), the 2 conclusions from it not: [1] Mo is a kind of high temperature resistant material (know what crucible melting gold? Molybdenum crucible!) . [2] : it's easy to molybdenum sulphur ion reaction generated sulfide and a high price.
The surface of the stainless steel is a beautiful and corrosion uns s31803 sheet resistant performance is good, and the surface of the stainless steel inherent performance, used in a variety of steel a, often called stainless steel. On behalf of the performance of 13 chrome steel, 18 chrome - nickel steel high alloy steel. From the perspective of metallography analysis, because the stainless steel containing chromium and make the surface form very thin chromium film, the film is isolated from intrusion in the steel corrosion of oxygen. In order to keep inherent corrosion resistance of stainless steel, steel must contain chromium.
Stainless steel plate price but not cause obvious changes in the 347 stainless steel size, shape stainless steel such as 1 cr17ni7 austenite, cr18ni9 1 and 0 cr18ni9, when exposed in ocean environment, may be some rust. Corrosion is usually shallow and can be easily removed. 0 cr17ni12m02 molybdenum is basically in the Marine environment corrosion resistance of stainless steel.
In addition to atmospheric conditions, stainless steel plate price there are two other factors influencing the atmospheric corrosion resistance of stainless steel. The surface state and processing technology. Finishing level influence of corrosion resistance of stainless steel in chloride environment. Matt surface (surface) is sensitive to corrosion. The normal industrial finishing surface of corroded the sensitivity of the smaller. Surface finishing level of dirt and rust removal. From high precision processing to remove all dirt and rust on the surface of objects is easy, but removed from the surface of the matte is very difficult.