In 2016, China's stainless steel market is expected to remain weak, mainly as follows:
Stainless steel wire due to the resistance of air, steam, water and other corrosive medium and weak acid, alkali, salt and other chemical etching medium corrosion of steel, also known as acid-resistant stainless steel. The corrosion resistance of stainless steel wire steel depends on the alloying elements contained. Chromium is to corrosion resistance of stainless steel wire to obtain the basic elements, when the chromium content in steel reaches containing about 12% chromium and corrosive media, the role of oxygen in the steel surface to form a thin oxide film (from the passive film ), can prevent further corrosion of the steel substrate. In addition to chromium, the commonly used alloying elements nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., in order to meet the various uses of stainless steel wire organization and performance requirements.
Compare 300 series stainless steel wire301 - scalability, for molding products. It can also be rapidly hardened by mechanical processing. Good weldability. Abrasion resistance and fatigue strength than 304 stainless steel wire.
302 - Corrosion resistance as compared with the 304, due to relatively high carbon intensity and therefore better.
303 - By adding a small amount of sulfur and phosphorus to more than 304 cutting
304 -Is a versatile stainless steel, it is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts. Universal model; that is 18/8 stainless steel. GB grades 0Cr18Ni9.
309 - 304 better than temperature resistance.
316 - Following 304, the second most widely used of steel, mainly for the food industry and surgical equipment, adding Mo to obtain a special corrosion-resistant structure. Than the 304 because it has better resistance to chloride corrosion and thus as "marine steel" to use. SS316 is often used to fuel recovery. 18/10 grade stainless steel is usually in line with the application level.
321 - In addition to adding titanium as reducing the risk of material other than the corrosion of the weld performance similar to 304. .
Compare 400 series stainless steel wire
408 - Good heat resistance, low corrosion resistance, 11% Cr, 8% of Ni.
409 - The cheapest model (BAR), commonly used as automobile exhaust pipe, is a ferritic stainless steel (chrome steel).
410 - High-strength chrome steel, wear resistance, corrosion resistance is poor.
416 - Add sulfur to improve the processing performance of materials.
420 - Used in surgical tools, you can do very light.
430 - Ferritic stainless steel, decorative, such as for car accessories. Good shape, but heat resistance and corrosion resistance worse.
440 - High strength cutting tool steel, carbon slightly higher, after appropriate heat treatment to obtain a higher yield strength and hardness up to 58HRC, are among the most hard stainless steel. The most common application example is the "razor blades." There are three common models: 440A, 440B, 440C, in addition to 440F (easy processing).
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