One, the two uses are different:
1, 304 stainless steel use: suitable for food processing, storage and transportation. It has good processing performance and weldability. Plate heat exchanger, bellows, household goods (1, 2 types of cutlery, cabinets, indoor plumbing, water heaters, boilers, bathtubs);
Auto parts (windshield wipers, mufflers, molded products), medical appliances, building materials, chemicals, food industry, agriculture, ship parts, etc. 304 stainless steel is a nationally recognized food-grade stainless steel.
2, 201 stainless steel use: the product belongs to the high manganese low nickel stainless steel, nickel content is low, poor corrosion resistance, in all kinds of table tops, countertops, kitchen utensils, as well as outdoor decorative projects and urban decoration industry and high-grade household products with a large amount.
Two, the overview of the two different:
1, 304 stainless steel overview: 304 stainless steel is a common material in stainless steel, density of 7.93 g/cm?, the industry is also called 18/8 stainless steel. High temperature resistance of 800 ℃, with good processing performance, high toughness, widely used in industrial and furniture decoration industry and food medical industry.
2, 201 stainless steel overview: 201 stainless steel, with a certain degree of acid resistance, alkali resistance, high density, polished without bubbles, no pinhole and other characteristics, is the production of a variety of cases, straps bottom cover high-quality materials and so on.
Three, the two characteristics are different:
1, 304 stainless steel characteristics: good corrosion resistance, heat resistance, low temperature strength and mechanical properties; stamping, bending and other hot workability is good, no heat treatment hardening phenomenon (using temperature -196 ℃ ~ 800 ℃).
2, 201 stainless steel properties: 8% below the chromium content and low nickel content does not reach a balance and the formation of ferrite, for this reason, the chromium content in the 200 series of stainless steel down to 13.5% to 15%, and in some cases down to 13% to 14% of its corrosion resistance can not be compared with 304 and other similar steel. In addition, manganese and in some cases copper reduces repassivation under acidic conditions common in corrosion sites in deposition zones and crevices.
Baidu Encyclopedia-304 Stainless Steel
Baidu Encyclopedia-201 (201 Stainless Steel)
Baidu Encyclopedia-201 Stainless Steel