321 austenitic stainless steel is a material with excellent Stress Rupture performance and high temperature Creep Resistance Stress mechanical properties are better than stainless steel 304 material.
321 austenitic stainless steel Chemical composition: Carbon: 0.08 silicon: 1.00 manganese: 2.00 phosphorus: 0.045 sulphur: 0.030 nickel: 9.00-12.00 chromium: 17.00-19.00 Titanium: 5C-0.70
321 austenitic stainless steel in the atmosphere has a good corrosion resistance, is widely used in petrochemical, electric power, Bridges and automotive industries. But stainless steel "rust" is not absolute, because of the special service environment, stainless steel will also occur corrosion. Medium concentration, pH value, temperature and other factors will have a greater impact on the corrosion resistance of stainless steel. For example, in the range of 450~850℃ sensitization temperature, long-term use of stainless steel will occur intercrystalline corrosion. The mechanism is that C combines with Cr at grain boundary to form Cr23C6 and precipitates out, reducing Cr content at grain boundary, which is the so-called "poor chromium". Cr element is one of the main elements to inhibit intercrystalline corrosion. When the content of Cr at grain boundary is lower than 12%, the probability of intercrystalline corrosion will increase.
321 austenitic stainless steel Industry application:
Used in open field machines, heat resistant parts of building materials and parts with difficulty in heat treatment, which require high chemical, coal and petroleum industries to resist grain boundary corrosion
1. Oil exhaust combustion pipeline
2. Engine exhaust pipe
3. Boiler shell, heat exchanger, heating furnace components
4. Mute parts for diesel engine
5.Boiler and pressure vessel
6. Chemical tanker
7.Expansion joints
8. Spiral welded pipe for furnace pipe and dryer
If you need 321 austenitic stainless steel, please contact us for quotation.
