Introduction: The generation of nickel manganese austenitic stainless steel series of new, well developed in India. Most of the 200 series stainless steel sold in the Chinese market is almost no control in accordance with the national standard of sulfur, carbon content, manganese (and nitrogen) to replace part or all of the nickel to produce a lower nickel content of austenitic stainless steel. Disadvantages: 18% or less of chromium content and low nickel content reach equilibrium and the formation of ferrite, for 200 series stainless steel of chromium content to 13.5% to 15%, in some cases down to 13% 14%, the corrosion resistance is not 304 Further, in the deposition zone and crevice corrosion site common acidic conditions, the presence of manganese and copper in some cases reduce the repassivation effect and compared to other similar steel. 200 series steel destruction rate under these conditions is approximately 10-100 times 304 stainless steel. In the production of these steels are often unable to control the residual sulfur content and carbon content, materials can not be traceable track, even in the material recycling is also true. If you do not explain Cr-Mn steels, they become a dangerous mix of scrap materials, resulting in casting high manganese content contained unexpected. Performance: with certain acid, alkali resistance, high density, polishing no bubbles, no pinholes and other characteristics. Purpose: the production of the case, strap bottom high quality materials. Decorative pipe, industrial pipe, some light stretching of products. Chemical composition (C) carbon: ≤0.15 (Si) Silicon: ≤0.75 (Mn) Manganese: 5.5 ~ 7.50 (Cr) Chromium: 13.50 ~ 15.0 (N) N: ≤0.25 (P) Phosphorus: ≤0.060 (S) S : ≤0.030 (Ni) nickel: 3.50-5.50% (Cu) Copper: Copper semi-high 0.8% 1.5% copper, see GB / T 20878-2007 Physical Properties Tensile Strength: 520MPa yield strength: 275MPa Elongation: 55 to 60 % elastic modulus: 29,000,000 psi equivalent to: 203000MPa hardness (Brinell hardness) HRB <183N / mm2 (MPa). Density: .280lbs / cubic inch (density of 7.93g / cm3) LaCrosse Metal Co., Ltd., the production and sale of stainless steel products, raw materials. The Division of common specifications products with a large shipping warehouse, readily available from stock. Long-term inventories are: stainless steel, stainless steel bar, stainless steel wire, copper, copper rod, copper, aluminum, aluminum rod, aluminum, capillary. Excellence is the purpose of my company, reputation first, quality first, the customer first is the company's business philosophy, after years of development, the company has a comprehensive logistics management system and quality of service system, sophisticated production and timely and thoughtful The service is our commitment to every customer, warmly welcome all metal products, electronics manufacturers, automobile manufacturers purchase samples, call us or visit us!