Welded UNS N08020 alloy pipe for general corrosion-resisting and low- or high-temperature service.
Welded UNS N08020 alloy pipe for general corrosion-resisting and low- or high-temperature service.
This specification of ASTM B464 Pipe is of welded Alloy 20 pipes that are resistant to corrosion and meant for use in vessels of high temperatures. Pipes manufactured with ASTM B464 material, have high impact strength and a high tensile strength, along with a high thermal conductivity and a low coefficient of thermal expansion. Because of their characteristics, pipes made from ASTM B464 material are used in a wide number of industries and applications such as gas processing, sea water equipment, condensers, power generation, chemical equipment, pulp and paper industry, specialty chemicals, off-shore oil drilling companies, etc.
Chemical composition:
| Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.07 | ||
| Mn | - | 2.00 | ||
| Si | - | 1.00 | ||
| P | - | 0.045 | ||
| S | - | 0.035 | ||
| Cr | 19.00 | 21.00 | ||
| Ni | 32.00 | 38.00 | ||
| Mo | 2.00 | 3.00 | ||
| Cu | 3.00 | 4.00 | ||
| Nb | 8×C％ | 1.00 |
Mechanical Properties:
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 191 (≥) | 623 (≥) | 31 | 44 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 |
Physical properties of grade B 464 N08020:
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
|---|---|---|---|---|---|
| 172 (≥) | 171 (≥) | 43 | 21 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
- | - | - |
| 971 | 627 | 638 | - | - | - |
B464 N08020 Range of products:
| Product type | Products | Dimension | Processes | Deliver Status |
|---|---|---|---|---|
| Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
| Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
Application :
Good availability at both the mill and distributor levels have made this a popular choice for a wide variety of applications. Included among these are: equipment for the manufacture of synthetic rubber, plastics, organic and heavy chemicals solvents and explosives, petroleum products, etc. Also employed in heat exchangers, mixing tanks, metal cleaning and pickling equipment and process piping.
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