Stainless Steel Seamless Tube ASTM A213 TP321 Heat Exchangers Threaded fasteners
Stainless Steel Seamless Tube ASTM A213 TP321 Heat Exchangers Threaded fasteners
YUHONG GROUP deal with seamless steel pipe and tube already more than 33 years, every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 70 countries, Like Italy, UK, Gernmany, USA, Canada, Chile, Colombia, Saudi Arabia, Korea, Singapore, Austrial, Poland, France ...
Chemical Composition of Astm A213 TP321 Stainless Steel Tube
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max |
- 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 |
| 321H | min. max |
0.04 0.10 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
- | Ti=4(C+N) 0.70 |
Mechanical Properties of Astm A213 TP321 Stainless Steel Tube
| 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 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 321H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
Physical Properties of Astm A213 TP321 Stainless Steel Tube
| 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 |
Overwiew:
TP321 stainless steel is a Ni-Cr-Mo type austenitic stainless steel, its properties are very similar to 304, but due to the addition of titanium metal, it has better resistance to grain boundary corrosion and high temperature strength. Due to the addition of titanium metal, it controls the formation of chromium carbide.
Application:
Chemical containers, including for transport
Food preparation equipment particularly in chloride environments.
Coastal architectural panelling, railings & trim.
Chemical containers, including for transport.
Heat Exchangers.
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