AISI Grades 321stainless steel is the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. AISI Grades 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. AISI Grades 321stainless steel is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
AISI 321 grade stainless steel Chemical Composition
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
Other |
|
321 |
0.08 |
2.00 |
0.75 |
0.045 |
0.030 |
17.0-19.0 |
|
9.0 12.0 |
0.10 |
Ti=5(C+N) 0.70 |
AISI 321 grade stainless steel Mechanical properties
| 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 |
AISI 321 grade stainless steel Physical properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nW.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 |
Bebon International is a professional AISI 321 stainless steel exporter and a steel Stockist in china. Any need in AISI 321 stainless steel Chemical Composition ，Mechanical Properties and price , please feel free to contact us by email or calling to us.
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