Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASME SB407 UNS N08811 Nickel Iron Chromium Alloy Seamless Tube for High Temperature Industrial Pipeline
Leveraging 30 years of extensive experience in the manufacturing and export of industrial tubing, YUHONG is a leading provider of top-quality ASME SB407 UNS N08811 Nickel Iron Chromium Alloy Seamless Tubes, meticulously engineered for high-temperature industrial pipeline applications.
All our tubes adhere to the strict requirements of ASME SB407, undergoing comprehensive testing procedures. With a global footprint spanning 85 countries, we have a proven track record of delivering reliable, high-performance tubing solutions. Whether for power generation plants, petrochemical refineries, or other high-temperature industrial sectors, YUHONG's UNS N08811 alloy seamless tubes offer unparalleled durability and safety, making us the preferred choice for customers seeking superior tubing products.
Chemical Requirements for UNS N08811
| Element | Nickel | Chromium | Iron | Manganese, max | Carbon | Copper | Silicon | Sulfur, max | Aluminum | Titanium |
| Composition Limits, % | 30 min – 35 max | 19 min – 23 max | 36.5 min | 1.5 | – | 0.75 | 1 | 0.015 | 0.15 min – 0.60max | 0.15 min – 0.60max |
Mechanical Properties of UNS N08811 Pipe and Tube
| Alloy | Condition (Temper) | Tensile Strength | Yield Strength (0.2 % offset, min) | Elongation in 2 in. or 50 mm (0.8 in.), min |
| UNS N08811 | hot - finished annealed or cold - worked annealed | 65,000 (450) psi (MPa) | 25,000 (170) psi (MPa) | 30 |
Pipe Schedules
| Normal Pipe Size | Outside Diameter | Schedule No. 5 | Schedule No. 10 | Schedule No. 40 | Schedule No. 80 |
| Inches | |||||
| 1/4 | 0.54 | -- | 0.065 | 0.088 | -- |
| 3/8 | 0.675 | -- | 0.065 | 0.091 | 0.126 |
| 1/2 | 0.84 | 0.065 | 0.083 | 0.109 | 0.147 |
| 3/4 | 1.05 | 0.065 | 0.083 | 0.113 | 0.154 |
| 1 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 |
| 1 1/4 | 1.66 | 0.065 | 0.109 | 0.14 | 0.191 |
| 1 1/2 | 1.9 | 0.065 | 0.109 | 0.145 | 0.2 |
| 2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 |
| 2 1/2 | 2.875 | 0.083 | 0.12 | 0.203 | 0.276 |
| 3 | 3.5 | 0.083 | 0.12 | 0.216 | 0.3 |
| 3 1/2 | 4 | 0.083 | 0.12 | 0.226 | 0.318 |
| 4 | 4.5 | 0.083 | 0.12 | 0.237 | 0.337 |
| 5 | 5.563 | -- | -- | 0.258 | -- |
| 6 | 6.625 | -- | -- | 0.28 | -- |
| Millimetres | |||||
| 6.35 | 13.72 | -- | 1.65 | 2.24 | -- |
| 9.52 | 17.14 | -- | 1.65 | 2.31 | 3.2 |
| 12.7 | 21.34 | 1.65 | 2.11 | 2.77 | 3.73 |
| 19.05 | 26.67 | 1.65 | 2.11 | 2.87 | 3.91 |
| 25.4 | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
| 31.8 | 42.16 | 1.65 | 2.77 | 3.56 | 4.85 |
| 38.1 | 48.26 | 1.65 | 2.77 | 3.68 | 5.08 |
| 50.8 | 60.32 | 1.65 | 2.77 | 3.91 | 5.54 |
| 63.5 | 73.02 | 2.11 | 3.05 | 5.16 | 7.04 |
| 76.2 | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
| 88.9 | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 |
| 101.6 | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
| 127.0 | 141.3 | -- | -- | 6.55 | -- |
| 152.4 | 168.28 | -- | -- | 7.11 | -- |
Advantages of ASME SB407 UNS N08811
1.Outstanding High - Temperature Resistance
Can maintain stable mechanical properties at high temps (e.g., 650–1093℃), resisting deformation/cracking under pressure, ensuring pipeline stability.
2.Strong Corrosion Resistance
Resists oxidative acids (like nitric acid), sulfur - containing media, and stress corrosion.
Reduces leakage risks, suits chemical, petrochemical high - temp corrosive environments.
3.Superior Structural & Quality Assurance
Seamless structure: Uniform wall thickness, no weak welds, ideal for high - pressure/high - purity fluid transport.
Complies with ASME SB407: Strict tests (chemical, mechanical, non - destructive) ensure reliable quality.
4.Good Processability
Easy to form: Can be cold/hot - worked into various shapes (straight/bent tubes) for diverse design needs.
Friendly welding: Welds match base metal performance, cutting installation/maintenance costs.
