301 is an austenitic stainless steel, with high strength and good ductility, magnetic, and excellent corrosion resistance. Low chrome, nickel content to increase the cold work hardening range, increased pull strength .301 Typical applications include aircraft structural parts, trailer body, diaphragm, engine, construction and car decoration, car wheel covers, roof leather products, tablecloths, storm door frames and conveyor.
301 stainless steel Chemical composition:
Carbon
0.15 max.
Manganese
2.00 max.
Phosphorus
0.045 max.
Sulfur
0.030 max.
Silicon
0.75 max.
Chromium
16.00 - 18.00
Nickel
6.00 - 8.00
Nitrogen
0.10 max.
301 stainless steel Physical properties:
301 stainless steel yield strength (N / mm2) ≥205
Tensile strength ≥ 520
Elongation (%) ≥40
Hardness HB ≤ 187 HRB ≤ 90 HV ≤ 200
Density of 7.93 g? Cm-3
301 stainless steel Mechanical properties:
Tensile strength σb (MPa): ≥ 520
Conditional yield strength σ0.2 (MPa): ≥205
Elongation δ5 (%): ≥40
Sectional shrinkage ψ (%): ≥60
Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV
May lead to 301 stainless steel rust causes:
1. The presence of chloride ions in the environment. Chloride is widely present, such as salt, sweat, sea water, sea breeze, soil and so on. Stainless steel in the presence of chloride ions in the environment, corrosion quickly, even more than ordinary low-carbon steel. So the use of stainless steel environment requirements, but also need to always wipe, remove the dust, keep clean and dry. (This gives him a "misuse.") The United States there is an example: an enterprise with an oak container containing a chloride ion solution, the container has been used for nearly 100 years, the last century, the nineties plan to replace , Because the oak material is not modern, the use of stainless steel, 16 days after the replacement of containers due to corrosion leakage.
2. No solution treatment. Alloying elements are not dissolved in the matrix, resulting in low matrix alloy content, corrosion resistance is poor.
3. This titanium-free and niobium-free material tends to have inherently intergranular corrosion. By adding titanium and niobium, together with a stable treatment, can reduce intergranular corrosion. In the air or chemical corrosion medium can resist corrosion of a high-alloy steel, stainless steel is a beautiful surface and corrosion resistance, and do not have to surface treatment such as plating, and play the inherent surface properties of stainless steel, used in many A type of steel, often referred to as stainless steel. On behalf of the performance of 13 chrome steel, 18-8 chrome nickel steel and other high alloy steel.
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