Features and applications of stainless steel
Relevance
Stainless steel has taken a leading place among other construction materials in modern life because of its exceptional qualities. It is used for everything from pots and cutlery to exclusive equipment in medicine, chemical and nuclear industries. It should be noted its undoubted hygienic qualities. Stainless steel has no effect on drinking water. stainless steel does not affect the taste of products, so it is most widely used in the food industry. On the smooth high-quality surface of stainless steel do not reproduce microorganisms, fungi and bacteria. Supplier «Auremo» offers high quality products that meet GOST and international standards. The price is optimal.
CR18N9 (EJ1).
This grade is considered the most common. It contains 0.005−0.15% C, 8−11% Ni and 18% Cr. Its tensile strength is 80 kg/mm2, in forged, it has an austenitic or austenitic-carbide structure, it has elongation up to 20% and impact resistance up to 10 kg/cm2. After quenching at 1050−1150°C with cooling in water or air, the tensile strength decreases to 60 kg/mm2… Despite this, elongation increases to 45−50% and impact resistance significantly increases. Quenching gives the austenitic steel a non-magnetic structure. Repeated heating of X18H9 austenitic steel to temperatures in excess of 600 °C, and mechanical cold working can give partial decomposition of austenite. In addition, the alloy acquires magnetic properties. Repeated heating can cause the release of chromium carbides, these make the nearby zones of the metal malochromic and therefore not very resistant to corrosion.
Intergranular corrosion
Intergranular corrosion develops when carbides are released at the grain boundaries of steel. If the steel is attacked by deep corrosion, it becomes very brittle and can break on bending, and it loses the familiar metallic sound on impact. Thus, the «knife-like» corrosion near welding seams can also be explained. If the propensity for intercrystalline corrosion is to be prevented, some titanium and niobium are added to the alloy. During the formation of stronger carbides TiC, NbC, these elements bind carbon and all chromium remains in solution, thus eliminating intergranular corrosion.
Chemical resistance
A big plus is the high resistance of all grades of stainless alloys to organic acids, weak mineral acids and especially nitric acid. But sulfuric or hydrochloric acids can dissolve these steels. There are also very resistant grades. Those include pure austenitic chromium-nickel 12X18H10T (AISI 321), 08X18H10 as well as 12X17 (AISI 430).
Furnizor
Are you interested in the features and applications of stainless steel? Application of stainless steel from the supplier of «Auremo» complies with GOST and international quality standards. Supplier «Auremo» offers to buy stainless steel on favorable terms, the price is optimal. We offer to buy stainless steel from the specialized warehouses of the supplier «Auremo» with delivery to any city. Wholesale customers the price — favorable. Always in stock stainless steel, price — optimal from the supplier. We are waiting for your orders.
Buy a bargain price.
Supplier «Auremo» offers to buy stainless steel, the price — due to the technological features of production without the inclusion of additional costs. The company’s website displays information about the latest arrivals of products. It is possible to buy products with non-standard parameters to order. The cost of the order depends on the volume and additional terms of delivery. The supplier «Auremo» invites to buy stainless steel in bulk or by installments. We have the best price-quality ratio for the whole range of products. In this segment the company «Auremo» is a profitable supplier. Buy stainless steel today.
