321 stainless steel wire mesh is also known as 321 wire mesh, 321 screen mesh, 321 stainless steel woven mesh, 321 stainless steel square hole mesh, 321 stainless steel mesh.

321 stainless steel has excellent high temperature stress rupture performance and high temperature creep resistance, stress mechanical properties are better than 304 stainless steel.

321 stainless steel wire mesh production standard: GB/T5330-2003 (formerly GB/T5330-85)

321 stainless steel wire mesh filter models: GFW, GF1W, GF2W, GF3W.

A material of 321 stainless steel. The details are as follows:

321 Chemical Composition: Carbon: 0.08 Silicon: 1.00 Manganese: 2.00 Phosphorus: 0.045 Sulfur: 0.030 Nickel: 9.00-12.00 Chromium: 17.00-19.00 Titanium: 5C-0.70

321 stainless steel is a Ni-Cr-Mo type austenitic stainless steel, its properties are very similar to 304, but due to the addition of metal titanium, it has better resistance to grain boundary corrosion and high temperature strength. Due to the addition of metallic titanium, it effectively controls the formation of chromium carbide.

321 austenitic stainless steel has good corrosion resistance in the atmosphere and is widely used in petrochemical, electric power, bridge and automobile industries [1]. However, the "stainless" of stainless steel is not absolute. Due to the special service environment, stainless steel will also corrode. Factors such as medium concentration, pH value, and temperature will have a greater impact on the corrosion resistance of stainless steel. For example, if the stainless steel is used for a long time in the sensitization temperature range of 450~850℃, intergranular corrosion will occur in stainless steel. The mechanism is that C combines with Cr at the grain boundary to form Cr23C6 and precipitate, which reduces the Cr content at the grain boundary, which is the so-called "poor chromium". The Cr element is one of the main elements that inhibit intergranular corrosion. When the Cr content at the grain boundary is less than 12%, the probability of intergranular corrosion will increase.

Industry application: used in field open-air machines in chemical, coal, and petroleum industries that require high resistance to grain boundary corrosion, heat-resistant parts of building materials and parts with difficult heat treatment

1. Petroleum waste gas combustion pipeline

2. Engine exhaust pipe

3. Boiler shell, heat exchanger, heating furnace parts

4. Muffler parts for diesel engines

5. Boiler pressure vessel

6. Chemical truck

7. Expansion joints

8. Spiral welded pipes for furnace pipes and dryers