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Stainless acid resistant steel is widely known as a stainless steel. It’s resistant to corrosion caused by factors such as air, steam, water.
What are the characteristics of stainless steel?
(1) Good welding performance
(2) Strong corrosion resistance
(3) Strong heat resistance
What are the types of stainless steel?
(1) Austenitic stainless steel
It contains more than 18% chromium, and also about 8% of nickel and a small amount of molybdenum, titanium, nitrogen and other components. Great performance can withstand a variety of media corrosion. This type of steel has a good plasticity, toughness, weldability and corrosion resistance. Austenitic stainless steel is identified by numbers from the 200 and 300 series.
(2) Martensitic stainless steels
High strength but poor plasticity and weldability. Martensitic stainless steel has higher strength, hardness, and abrasion resistance because of its higher carbon content. Its corrosion resistance is not as good. It is used for some parts with higher mechanical properties and general requirements for corrosion resistance e.g elasticity. Martenisitic stainless steel is widely used in producing steam turbine blades, hydraulic press valves etc. Martensitic stainless steel is marked with 410, 420 and 440C.
(3) Ferritic stainless steel
Contain 15% to 30% of chromium. Its corrosion resistance, toughness and weldability increase when we increase content of chromium. The stress corrosion resistance of chloride is better than other types of stainless steel. Ferritic stainless steel has higher corrosion and oxidation resistance because of its high chromium content. The mechanical and processing properties are poor. It’s mostly used in acid-resistant structures with little stress and as oxidation resistant steel. This type of steel can resist the corrosion of the atmosphere, nitric acid and saline solution and has the characteristics of high temperature oxidation resistance and low thermal expansion coefficient. It is used in nitric acid and food factory equipment. It can be used to made parts such as gas turbines as it’s useful at a high temperature. Ferritic stainless steel is marked with 430 and 446.
The stainless steel materials commonly used by Weimi include 303, 304, 316, etc. Please see the details below.
SST 303: It is easier to cut than 304 by adding a small amount of sulfur and phosphorus.
SST 304: universal type, that is 18/8 stainless steel. Widely used in: corrosion - resistant containers, tableware, furniture, railings, medical equipment. The standard composition is 18% chromium + 8% nickel. It is a non-magnetic stainless steel that cannot be modified by heat treatment.
SST 316: After 304, this is the second most widely used steel grade, mainly used in the food industry, clocks and jewelry, pharmaceutical industry and surgical equipment.
Because SST 316 is the best food-grade stainless steel, its price is a little more expensive than SST 303 and SST 304.
Many of Weimi's customized products will use the combined processing of lathes and milling machines. Lathes can perform external and internal surface turning and also cone and plane, drilling and boring turning. Milling machines can process planes. (Horizontal plane, vertical plane), grooves (key groove, T-shaped groove, dovetail groove, etc.), split tooth parts, spiral surface (thread, spiral groove) and various curved surfaces. In addition, it can also be used for internal hole processing.
Weimi can produce a variety of complex stainless steel machining parts for you with sufficient and high-precision machining equipment. We are happy to produce in large quantities. In addition, stainless steel machined parts can be subjected to various surface treatments such as passivation, polishing, electroplating, spraying, wiring drawing, etc. You can choose different surface treatments according to your needs.
Contact Weimi for quick quotes and customized solutions for machined products.