321 stainless steel coil description
Type 321 contains a titanium addition of at least five times the carbon content to overcome the sensitizing tendency during welding. Its corrosion resistance is similar to Type 304 but 321 performs better in the 800°-1650°F sensitization range. In Type 321, the oxide or carbonitride of titanium may develop minute black or dark gray inclusions. When the metal is ground or buffed these inclusions may appear and destroy surface appearance, although it will not damage the utility or workability of the metal. Resistance to abrasion is favorable.
Uses include aircraft engine components, chemical kilns, exhaust systems and stack liners, flash boilers and welded equipment.321 stainless steel coil and sheet is part of the austenitic family of stainless steel. 321 is basically a 321 grade containing a stabilizer of titanium. Type 321 is a good choice for applications where heat is an issue. 321 can be used in applications up to 900 degrees Celsius where 321 is normally used up to 500 degrees Celsius. Grade 321 has excellent forming and welding characteristics. It does not polish well so would not be used for decorative applications.
321 stainless steel coil application
1、Aircraft exhaust manifolds 2、Expansion joints 3、 Furnace parts 4、Heating element tubing 5、Heat exchangers
321 stainless steel coil chemical composition
Chemical Properties Of 321 stainless steel coil:
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | other | ||
321 | min. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 17.0 19.0 | - | 9.0 12.0 | - 0.10 | Ti=5(C+N) 0.70 | |
321 stainless steel coil mechanical propertie
The mechanical properties of grade 321 stainless steel coil
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | ||
Rockwell B (HR B) max | Brinell (HB) max | |||||
321 | 515 | 205 | 40 | 95 | 217 | |
321 stainless steel coil Physical Properties
Physical Properties Of 321 stainless steel coil:
Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | ||||
0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | ||||||
321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 | |
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Application
Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.
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We are a well known worldwide supply and export stainless steel coil in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.
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