Diameter 10mm - 1200mm Steel Round Bar ASTM 304 SUS 310S 316 Stainless Steel

Cold Rolled 316 321 Stainless Steel Round Bar 2mm 3mm 6mm Metal Rod

It can be divided into Cr system (SUS400), Cr-Ni system (SUS300), Cr-Mn-Ni system (SUS200) and precipitate hardening system (SUS600).
200 series - Chrome-nickel-manganese austenitic stainless steel
300 series - Chrome-nickel austenitic stainless steel
301 -- Good ductility for molding products. It can also be hardened by machine speed. Good weldability. The wear resistance and fatigue strength are better than 304 stainless steel.
302 - corrosion resistance with 304, due to relatively high carbon and therefore better strength.
303 - It is trimmed by adding a small amount of sulfur and phosphorus.
304 -- 18/8 stainless steel. GB brand is 06Cr19Ni10.
309 - better temperature resistance than 304.
The second most widely used steel, after 304, is used in the food industry and surgical equipment, where molybdenum is added to give it a special structure that is resistant to corrosion. It is also used as "Marine steel" because of its better resistance to chloride corrosion than 304. SS316 is usually used in nuclear fuel reprocessing units. Grade 18/10 stainless steel is also usually qualified for this application class. [1]
Model 321 -- Similar to 304 except that titanium is added to reduce the risk of weld corrosion.
400 series -- ferrite and martensitic stainless steel
408 -- Heat resistance, mild corrosion resistance, 11% Cr, 8% Ni.
409 -- cheapest model (Anglo-American), usually used as automobile exhaust pipe, ferritic stainless steel (chrome).
410 -- Martensite (high strength chromium steel), good wear resistance, poor corrosion resistance.
416 -- Sulfur was added to improve the machinability of the material.
420 -- "blade grade" martensitic steel, similar to brinell high chromium steel, the earliest stainless steel. Also used for surgical knives, which can be made very bright.
430 -- Ferritic stainless steel, for decorative purposes, e.g. automotive accessories. Good formability, but poor temperature and corrosion resistance.
440 -- high strength cutting steel, slightly high in carbon, with appropriate heat treatment to achieve a high yield strength, hardness up to 58HRC, is among the hardest stainless steels. The most common example is the "razor blade". There are three common models: 440A, 440B, 440C, and 440F (easy to process).
Series 500 - Heat resistant chromium alloy steel.
600 series - Martensite precipitation hardened stainless steel.
630 -- The most commonly used precipitation hardened stainless steel model, also commonly called 17-4; 4% 17% Cr, Ni.

Jiangsu Irunt Steel Group Co., Ltd. is located in Wuxi City , Jiangsu Province, China, which is the largest steel production base. After 30 years of efforts, it has grown from a family factory to a group company.

The group company mainly produces and sells a series of steel products such as steel pipe, steel coil, steel plate, copper pipe, copper plate, copper strip, aluminum pipe, aluminum plate, galvanized steel pipe, galvanized coil, galvanized plate and so on.The group company has established five platforms, including three production plants and two processing plants. At present, it is still expanding its production line, basically forming a development model of integration of production, processing and sales.

Our annual production capacity of various specifications is about 1 million metric tons. In addition to being a supplier of our series of products, the group company is also committed to expanding its commitment to customers by strengthening services and adding new facilities. A dedicated team is responsible for providing technical support, recommending the correct use of steel, and assisting customers to give full play to their products.

Over the years, we have opened up new markets in Africa, Southeast Asia, the Middle East and America. Our best service and excellent quality have led long-term partners in many countries and established continuous business relations with all customers. Our principle is "service first, sales second". Most of the time, we have comprehensive inspection and procurement to control the quality of finished products. We will have a professional inspection team to test each delivery of products.

Since its establishment, in line with the mission of "contributing high-quality products and services to the world" and the core values of "customer first, excellence, coexistence and win-win", we ensure that we can deeply cooperate with all our friends in the field of iron and steel, and win more affirmation and praise from the market and customers with its high-quality products, perfect product team and thoughtful service, I believe tomorrow will be better!