ASTM B407 Incoloy 800H / 800HT / UNS N08811 Seamless Alloy Steel Pipe
ASTM B407 UNS N08811 DIN / 1.4959 / INCOLOY 800HT SEAMLESS ALLOY STEEL PIPE
Incoloy 800H and 800HT are high-performance alloys that belong to the Incoloy family, which are nickel-chromium-iron alloys known for their excellent high-temperature strength and oxidation resistance. Unlike some other alloys, Incoloy 800H/800HT retains its strength under elevated temperature conditions, making it ideal for applications that face thermal cycling. The alloys can be easily fabricated, allowing for effective joining methods without much sacrifice in performance, which is essential in various industrial applications.
Key Advantages of 800 Series Alloys
- Temperature Resistance: These alloys can withstand temperatures up to about 1800°F (982°C) with remarkable resistance to deformation.
- Corrosion Resistance: Highly resistant to both oxidation and reduction environments, particularly beneficial in chemical processing and petrochemical applications.
- Versatile Fabrication: Excellent weldability allows for a variety of fabrication techniques, making these alloys suitable for complex structures.
800 / 800H / 800HT Incoloy Pipes Equivalent Grades
| 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 |
ASTM B407 Incoloy 800H/HT Seamless Alloy Steel Pipes Specification
| Specifications | ASTM B163 / ASTM B407 / ASTM B423 / ASME SB163 / ASME SB407 / ASME SB423 |
| Grades | INCOLOY 800 / INCOLOY 800H / INCOLOY 800HT / INCOLOY 825 / UNS NO8800 / UNS NO8810 / UNS NO8811 / UNS NO8825 |
| Type | Cold Drawn Seamless / Welded / ERW |
| OD Size | Seamless - 1/2" NB to 16" NB (Nominal Bore Size) Welded / ERW- 1/2" NB to 24" NB (Nominal Bore Size) |
| Wall Thickness | Schedule 5 to Schedule XS |
| Length | Single Random Length, Double Random Length And Customize Size. |
| Pipe Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Cold Drawn, Hot Finish, Stress Relieved, Annealed, Hardened, Tempered |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
ASTM B407 Incoloy 800H/HT Seamless Alloy Steel Pipes Chemistry Composition
|
Ni, % |
Cu, %
|
Fe, %
|
Mn, %
|
C, %
|
Si, %
|
S, %
|
Cr, %
|
Al, %
|
Ti, %
|
|
30.0-35.0
|
0.75 max
|
39.5 min
|
1.50 max
|
0.06-0.10
|
1.00 max
|
0.015 max
|
19.0-23.0
|
0.15-0.60
|
0.15-0.60
|
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
|
Wall thickness & Tolerance
|
|
Outside Diameter, mm |
Tolerance, % |
|
|
Average Wall |
Minimum Wall |
||
|
Cold-Finished |
12.7≤OD＜15.8 |
±15.0 |
- |
|
15.8＜OD≤38.1 |
±10.0 |
- |
|
|
38.1＜OD≤88.9 |
±10.0 |
- |
|
|
88.9＜OD≤114.3 |
±10.0 |
- |
|
|
114.3＜OD≤152.4 |
±12.5 |
- |
|
|
152.4＜OD≤168.3 |
±12.5 |
- |
|
|
Hot-Finished |
63.5≤OD＜139.7 |
±12.5 |
+28.5/-0 |
|
139.7≤OD≤234.9 |
±12.5 |
+28.5/-0 |
|
The applications of Incoloy 800, Incoloy 800H and Incoloy 800HT
- 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
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.