ASTM B407 Incoloy 800H / UNS N08810 / 1.4958 Seamless Alloy Steel Tube
Brand Name:YUHONG
Certification:ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:ASTM B407 UNS N08810 Seamless Alloy Steel Tube
Minimum Order Quantity:500KGS
Delivery Time:7 DAYS
Payment Terms:L/C,T/T
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ASTM B407 Alloy 800H / UNS N08810 / 1.4958 Alloy Steel Seamless Tube
This specification ASTM B407 covers UNS N08120, UNS N08800, UNS
N08801, UNS N08810, UNS N08811, UNS N08890, and UNS N06811 in the
form of cold-worked and hot-finished annealed seamless pipe and
tube. These alloys offer excellent resistance to corrosive
environments, including sulfuric and phosphoric acids, as well as
reducing and oxidizing atmospheres, making it ideal for harsh
service conditions.
For ASTM B407 Alloy 800H seamless tube, it has specialized heat
treatment as below:
Solution Annealing:
- The tube is heated to a temperature between 1900°F to 2100°F (1038°C to 1150°C).
- This high-temperature treatment helps to dissolve any carbides and allows for the homogenization of the microstructure.
Holding Time:
- The material is held at the solution annealing temperature for a specific duration, usually for about 30 minutes to 1 hour per inch of thickness, to ensure complete transformation and dissolution of phases.
Quenching:
- After the holding time, the tube is rapidly cooled. This can be done using water quenching or oil quenching, depending on the specific manufacturing process and desired properties. Rapid cooling is essential to prevent the formation of adverse phases like sigma phase.
Stabilization (Optional):
- In some cases, especially when service conditions involve exposure to higher temperatures, a stabilization anneal may be performed afterward. This involves heating the material at a lower temperature (around 1600°F to 1800°F or 871°C to 982°C) for a controlled time to enhance resistance to intergranular corrosion.
Final Cooling:
- Following the quenching or stabilization, the tube is allowed to cool to room temperature. This ensures that the material remains in a favorable phase that provides the necessary strength and resistance characteristics.
Equivalent Grades of ASTM B407 Alloy 800 / 800H / 800HT Seamless Tube
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | ЭИ670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | NA 15(H) | ЭИ670 | Z8NC33-21 | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | ЭИ670 | – | X8NiCrAlTi32-21 | XH32T |
Chemical Composition of ASTM B407 Alloy 800 / 800H / 800HT Seamless Tube
| Ni | Cr | Fe | Ti | Al | C | Mn | Si | S | Cu |
| 30.0-35.0 | 19.0-23.0 | ≥39.5 | 0.15-0.60 | 0.15-0.60 | ≤0.10 | ≤1.50 | ≤1.00 | ≤0.015 | ≤0.75 |
Physical Properties of ASTM B407 Alloy 800 / 800H / 800HT Seamless Tube
| Density | Melting Range | Specific Heat | Electrical Resistivity | ||
| g/cm3 | °C | °F | J/kg. k | Btu/lb.°F | µΩ·m |
| 7.94 | 1357-1385 | 2475-2525 | 460 | 0.11 | 989 |
Mechanical Properties of ASTM B407 Alloy 800 / 800H / 800HT Seamless Tube
| Tensile Strength, min. | Yield Strength, min. | Elongation,min. | Hardness, min. | ||
| Mpa | ksi | Mpa | ksi | % | HB |
| 600 | 87 | 295 | 43 | 44 | 138 |
ASTM B407 Incoloy 800H/HT Seamless Alloy Steel Pipes Mechanical Properties
Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | |
450 min | 170 min | 30 min | Hot-finished Annealed |
450 min | 170 min | 30 min | Cold-worked Annealed |
Outside Diameter & Tolerance
Outside Diameter, mm | Tolerance, mm | |
Cold-Finished | 12.7≤OD＜15.8 | ±0.127 |
15.8＜OD≤38.1 | ±0.19 | |
38.1＜OD≤88.9 | ±0.254 | |
88.9＜OD≤114.3 | ±0.381 | |
114.3＜OD≤152.4 | ±0.508 | |
152.4＜OD≤168.3 | ±0.635 | |
Hot-Finished | 63.5≤OD＜139.7 | ±0.787 |
139.7≤OD≤234.9 | ±1.19 |
Application
- Ethylene furnace quench boilers
- Hydrocarbon cracking
- Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
- Industrial furnaces
- Heat-treating equipment
- Chemical and petrochemical processing
- Super-heater and re-heaters in power plants
- Pressure vessels
- Heat exchangers
ASTM B407 Incoloy 800H / UNS N08810 / 1.4958 Seamless Alloy Steel Tube
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