Section 1: Product Overview
Incoloy seamless pipe and tube are iron-nickel-chromium alloys specifically designed for high-temperature applications with excellent oxidation resistance and creep strength. Our Incoloy seamless tubing meets ASTM B409, ASTM B515, and ASME SB-409 standards, making it the ideal choice for heat exchangers, furnace tubes, petrochemical processing, and thermal equipment.
As a reliable Incoloy pipe manufacturer, we provide Incoloy 800, 800H, 825, and 903 grades in seamless pipe and tube form.
Section 2: Key Features
- Excellent high-temperature oxidation resistance up to 1100°C
- Good creep rupture strength for prolonged high-heat exposure
- Resistant to carburization and sulfidation
- Excellent thermal fatigue resistance
- ASTM B409/B515 certified manufacturing process
- Complete material test reports (MTR) provided
Section 3: Available Grades Overview
| Grade | UNS No. | Key Feature | Main Applications |
|---|---|---|---|
| Incoloy 800 | N08800 | Heat resistant | Heat exchangers, furnace tubes |
| Incoloy 800H | N08810 | High carbon – creep strength | High-temperature furnace components |
| Incoloy 825 | N08825 | Acid resistant | Chemical processing, acid tanks |
| Incoloy 903 | N19903 | Low expansion | Aerospace, turbine components |
Section 4: Chemical Composition (All Grades)
| Element | 800 | 800H | 825 | 903 |
|---|---|---|---|---|
| Ni (Nickel) | 30.0-35.0 | 30.0-35.0 | 38.0-46.0 | 38.0-42.0 |
| Cr (Chromium) | 19.0-23.0 | 19.0-23.0 | 19.0-23.5 | – |
| Fe (Iron) | ≥39.5 | ≥39.5 | ≥22.0 | Bal |
| Mo (Molybdenum) | – | – | 2.5-3.5 | – |
| Cu (Copper) | ≤0.75 | ≤0.75 | 1.5-3.0 | – |
| Al (Aluminum) | 0.15-0.60 | 0.15-0.60 | 0.1-0.5 | 0.7-1.1 |
| Ti (Titanium) | 0.15-0.60 | 0.15-0.60 | 0.6-1.2 | 2.4-3.0 |
| C (Carbon) | ≤0.10 | 0.05-0.10 | ≤0.05 | ≤0.04 |
| Mn (Manganese) | ≤1.0 | ≤1.0 | ≤1.0 | ≤0.2 |
| Si (Silicon) | ≤1.0 | ≤1.0 | ≤0.5 | ≤0.2 |
| Nb (Niobium) | – | – | – | 2.4-3.0 |
Section 5: Mechanical Properties (All Grades – Annealed)
| Property | 800 | 800H | 825 | 903 |
|---|---|---|---|---|
| Tensile Strength | ≥515 MPa | ≥450 MPa | ≥586 MPa | ≥758 MPa |
| Yield Strength | ≥205 MPa | ≥180 MPa | ≥241 MPa | ≥379 MPa |
| Elongation | ≥30% | ≥25% | ≥30% | ≥20% |
| Hardness | ≤95 HRB | ≤95 HRB | ≤95 HRB | – |
| Density | 7.94 g/cm³ | 7.94 g/cm³ | 8.14 g/cm³ | 8.14 g/cm³ |
Section 6: Specifications & Dimensions
Applicable Standards
| Standard | Description |
|---|---|
| ASTM B409 | Seamless Pipe & Tube |
| ASTM B515 | Welded Pipe & Plate |
| ASME SB-409 | ASME Standard |
| AMS 5871 | Aerospace Material Specification |
Size Range
| Parameter | Range |
|---|---|
| Outside Diameter | 1/4″ (6.35mm) – 12″ (323.9mm) |
| Wall Thickness | 0.035″ (0.89mm) – 0.500″ (12.7mm) |
| Schedules Available | 5s, 10s, 40s, 80s, 160, XXH |
| Length | Random / Fixed 6m, 12m, or as required |
Section 7: Applications by Grade
| Grade | Recommended Applications |
|---|---|
| 800 | Heat exchangers, condensers, furnace tubes, petrochemical processing, steam generators |
| 800H | High-temperature furnace components, radiant tubes, reformer tubes, cracking heaters |
| 825 | Sulfuric acid storage, chemical processing tanks, seawater冷却, pollution control |
| 903 | Aerospace turbine components, nuclear equipment, high-precision instruments |
Section 8: Temperature Resistance Comparison
| Grade | Max Service Temp | Key高温 Performance |
|---|---|---|
| 800 | 1100°C (2012°F) | Good creep strength |
| 800H | 1100°C (2012°F) | Excellent creep rupture |
| 825 | 550°C (1022°F) | Good corrosion resistance |
| 903 | 650°C (1202°F) | Low thermal expansion |
Section 9: Why Choose Us
- ISO 9001:2015 certified manufacturer
- Mill test certificates provided with every order
- Competitive pricing direct from factory
- Quick lead times – typically 2-4 weeks
- Global shipping – worldwide logistics support
- Technical support – free material selection guidance
Section 10: FAQ
Q: What is the difference between Incoloy 800 and 800H? A: Incoloy 800H has higher carbon content (0.05-0.10%) which provides improved creep rupture strength at elevated temperatures.
Q: Is Incoloy 825 suitable for seawater applications? A: Yes, Incoloy 825 offers excellent resistance to seawater, sulfuric acid, and phosphoric acid environments.
Q: Which Incoloy is best for high temperature furnace? A: Incoloy 800H is specifically designed for high-temperature furnace applications with superior creep resistance.
Q: Can you provide custom sizes? A: Yes, we offer custom manufacturing to meet your specific dimensions and tolerances.
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