| Material Grade: | TP321 | Standard: | ASTM A249 |
|---|---|---|---|
| Size: | 1/8 ”to 5”mm | W.T.: | 1/4” To 5” Mm |
| Length: | Single Random， Double Random & Required Length | NDT: | ET HT UT PT |
| Packing: | Ply-wooden Case /Iron Case/ Bundle | Appllication: | Petroleum Refineries/natural-gas Processing/space Heating |
| High Light: | Heat Exchanger Stainless Steel Welded Tube， TP321 Stainless Steel Welded Boiler Tube， Condenser Stainless Steel Welded Pipe | ||
Stainless Steel Welded Tubes ASTM A249 TP321 Boiler Heat Exchanger Condenser Oil
What is TP321?
TP321 is austenitic stainless steel， refers to the stainless steel with austenitic organization at room temperature. Austenitic stainless steel is non-magnetic and has high toughness and plasticity， but the strength is low， it is not possible to strengthen it through phase transformation， and can only be strengthened through cold working， such as the addition of sulfur， calcium and other elements， it has good machinability. As austenitic stainless steel has a comprehensive and good overall performance， in all walks of life to obtain a wide range of applications. Austenitic stainless steel was introduced in Germany in 1913， has been playing the most important role in stainless steel， its production and use of about 70% of the total production and use of stainless steel. Steel number is also the most， China commonly used austenitic stainless steel grades there are more than 40.
Chemical Composition of ASTM A249 TP321 Stainless Steel Welded Tubes
| 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 |
Mechanical Property of ASTM A249 TP321 Stainless Steel Welded Tubes
| 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 |
Equivalent Grades of ASTM A249 TP321 Stainless Steel Welded Tubes
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B， 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
Physical Properties of ASTM A249 TP321 Stainless Steel Welded Tubes
| 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 |
ASTM A249 TP321 Stainless Steel Welded Tubes APPLICATION
Gas Processing
Petrochemical
Food Processing
Chemical
Fertilizers
Boiler
Oil & Gas
Heat exchanger
