Stainless steel 201/304
201 stainless steel generally refers to the general term of 201 stainless steel and acid-resistant steel. It refers to steel that is resistant to weak media such as atmosphere, steam and water. Acid-resistant steel refers to chemical leaching such as acid, alkali, and salt. Steel corroded by corrosive media. With certain acid and alkali resistance, high density, no bubbles, no pinholes, etc., it is used to produce high-quality materials for various watch cases and watchband bottom covers. Mainly used to make decorative tubes, industrial tubes, and some shallow stretched products. This product belongs to high-manganese and low-nickel stainless steel with low nickel content and poor corrosion resistance. It is used in various desktops, countertops, kitchen utensils, outdoor decoration projects, urban decoration industries and high-end household products.
201 Chemical composition:
(C) Carbon: ≤0.15 (Si) Silicon: ≤1.00 (Mn) Manganese: 5.5～7.50 (Cr) Chromium: 16.0～18.0 (N) Nitrogen: ≤0.25 (P) Phosphorus: ≤0.060 (S) Sulfur :≤0.030 (Ni) Nickel: 3.5-5.5
304 stainless steel is a common material in stainless steel. It has the characteristics of good processing performance and high toughness. It is widely used in industry, furniture decoration industry and food and medical industry to make equipment and part that requires good comprehensive performance (corrosion resistance and formability).
304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending without heat treatment. Hardening phenomenon (use temperature -196℃～800℃). It is suitable for food processing, storage and transportation. Has good processing properties and weldability. Plate heat exchangers, bellows, household products (category 1, 2 tableware, cabinets, indoor pipelines, 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. The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. The specific requirements are stipulated by the product standard. The common judgment in the industry is that as long as the Ni content is greater than 8% and the Cr content is greater than 18%, it can be considered as 304 stainless steel.