304 stainless steel strip

The 304 stainless steel is a group of martensitic stainless steels that contain varying amounts of chromium.

Chemical composition
304 stainless steel grade: 0Cr18Ni9 (0Cr19Ni9) 06Cr19Ni9 S30408
Chemical composition :C: ≤0.08, Si: ≤1.0 Mn: ≤2.0, Cr: 18.0 ~ 20.0, Ni: 8.0 ~ 10.5, S: ≤0.03, P: ≤0.035 N≤0.1.
304 is widely used, with good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics; Stamping bending and other hot processing good, no heat treatment hardening phenomenon (non-magnetic, use temperature -196°C~800°C).
Basic situation
There are two kinds of hot rolling and cold rolling according to the preparation method, and they are divided into 5 categories according to the structure characteristics of steel: austenitic type, austenite-ferritic type, ferritic type, martensitic type and precipitation-hardening type. Requirements can withstand oxalic acid, sulfuric acid-ferric sulfate, nitric acid, nitric acid-hydrofluoric acid, sulfuric acid-copper sulfate, phosphoric acid, formic acid, acetic acid and other acids corrosion, widely used in chemical, food, medicine, paper making, petroleum, atomic energy and other industries, as well as construction, kitchen utensils, tableware, vehicles, household appliances and various parts.

The corrosion resistance of stainless steel mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, etc.) and the internal organizational structure, which plays the main role of chromium. Chromium has high chemical stability, can form a passivation film on the surface of the steel, isolate the metal from the outside world, protect the steel plate from oxidation, and increase the corrosion resistance of the steel plate. After the passivation film is destroyed, the corrosion resistance decreases.
Nature of national standard

Tensile strength (Mpa) 520
Yield strength (Mpa) 205-210 elongation (%) 40% hardness HB187 HRB90 HV200304 stainless steel density 7.93 g/cm3 austenitic stainless steel is generally used this value 304 chromium content (%) 17.00-19.00, Nickel content (%) 8.00-10.00, 304 is equivalent to China's 0Cr19Ni9 (0Cr18Ni9) stainless steel 304 stainless steel is a universal stainless steel material, rust resistance than 200 series of stainless steel material is stronger. High temperature resistance is also better. 304 stainless steel has excellent corrosion resistance and good resistance to intergranular corrosion. For oxidizing acid, it is concluded in the experiment that 304 stainless steel has strong corrosion resistance in nitric acid below the boiling temperature of ≤65%. It also has good corrosion resistance to alkaline solutions and most organic and inorganic acids. General features 304 stainless steel plate beautiful surface and diverse use possibilities 304 stainless steel plate corrosion resistance is good, durable corrosion resistance is better than ordinary steel
The strength is high, so the possibility of using thin plates is large
High temperature oxidation resistance and high strength, so it can resist fire
Normal temperature processing, that is, easy plastic processing
Because it does not need surface treatment, it is simple and easy to maintain
Clean, high finish
Good weldability

Overall, the 304 stainless steel is a versatile option that offers good strength and wear resistance, making it suitable for a wide range of applications. However, it may not be suitable for use in corrosive environments.