| Material Grade: | UNS NO8800 | Standard: | ASTM B514 |
|---|---|---|---|
| Size: | 5.0mm- 1219.2 Mm | W.T: | 0.5mm – 20mm |
| Length: | Singleļ¼ Double Random & Cut Length | Application: | Gas Processing/Petrochemical |
ASTM B514 800H UNS NO8800 Inconel Alloy Welded Pipe Gas Processing
Incoloy 800 (N08800) Inconel 800 nickel based alloy/high-temperature alloy:
The Cr content in 800 alloy is usually 15-25%ļ¼ the nickel content is 30-45%ļ¼ and it contains a small amount of aluminum and titanium.
The 800 alloy is in a single austenite zone after high temperature and rapid coolingļ¼ thereforeļ¼ it is in a single austenite structure in use.The alloy has a high chromium content and sufficient nickel contentļ¼ so it has high high-temperature corrosion resistance and is widely used in industry.It has excellent resistance to stress corrosion cracking in chlorideļ¼ low concentration NaOH aqueous solutionļ¼ and high-temperature and high-pressure waterļ¼ so it is used for manufacturing equipment that is resistant to stress corrosion cracking
Incoloy800 application areas
chemical industry
Nuclear generator
Nitric acid coolerļ¼ acetic anhydride cracking pipe
Heat exchange equipment
Incoloy800 processing
Hot working:
1. The temperature range is 1200 ā~950 āļ¼ and the cooling method is water quenching or rapid air cooling.
2. In order to obtain the best performance and creep resistanceļ¼ solution treatment should be carried out after Hot working.
3. The materials can be directly sent into the furnace that has been heated to 1200 āļ¼ and the furnace can be quickly discharged after holding for enough timeļ¼ and Hot working can be carried out within the specified temperature range. When the material temperature drops below the Hot working temperatureļ¼ it needs to be reheated.
Cold working:
1. The work hardening rate is greater than that of austenitic stainless steelļ¼ so it is necessary to select processing equipment. Cold worked materials should be in the solution heat treated stateļ¼ and intermediate annealing should be carried out when the cold work volume is large.
2. If the cold processing amount is greater than 10%ļ¼ the workpiece needs to undergo secondary solid solution treatment.
Incoloy800 welding process
It is suitable to use any traditional welding process to weld with the same material or other metalsļ¼ such as tungsten inert gas weldingļ¼ plasma arc weldingļ¼ manual sub arc weldingļ¼ metal inert gas weldingļ¼ MIG weldingļ¼ and pulsed Arc welding is the preferred solution. If Shielded metal arc welding is adoptedļ¼ it is recommended to use (Ar+He+H2+CO2) as the shielding gas.
Chemical Composition of ASTM B514 800H
| Grade | Ni | C | Fe | Si | Mn | S | AI | Ti | Cu | Cr |
| Incoloy 800 | 30-35 | 0.1 max | 39.5 min | 1.0 max | 1.5 max | 0.015 max | 0.15-0.60 | 0.15-0.60 | 0.75 max | 19-23 |
Mechanical Properties of ASTM B514 800H
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800H | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75ļ¼000 ļ¼ | Psi – 30ļ¼000 ļ¼ MPa – 205 | 30 % |
| Out diameter | Wall thickness | Length | ||
|---|---|---|---|---|
| NB Sizes (in stock) | 1/8” ~ 24” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 12 Meters | |
| Seamless (Custom Sizes) | 5.0mm ~ 609.6mm | As per requirement | Upto 12 Meters | |
| Welded (in Stock + Custom Sizes) | 5.0mm ~ 1219.2mm | 1.0 ~ 15.0 mm | Upto 12 Meters | |
| Grades in Stainless Steel 300 Series of | 304ļ¼ 304Lļ¼ 304Hļ¼ 309Sļ¼ 309Hļ¼ 310Sļ¼ 310Sļ¼ 316Lļ¼ 317Lļ¼ 321ļ¼ 321Hļ¼ 347ļ¼ 347Hļ¼ 904L |
| Grades in Stainless Steel 400 Series of | 405ļ¼ 409ļ¼ 410ļ¼ 420ļ¼ 430ļ¼ 439ļ¼ 444ļ¼ 446 |
| Nickel Alloy Steel Grades of | Alloy 20 – 200 – 400 –K500– 600 – 601 – 625 –690–718– 800-800H-800HT–825 – 825HT – C276 |
