High Quality Incoloy 800 | 800HT | 825 Pipes & Tubes
Seamless • Welded • Durable & Precise
Get a QuoteWhat is Incoloy 800, 800HT & 825?
Incoloy 800, 800HT, and 825 are nickel-iron-chromium alloys engineered for exceptional strength and resistance to oxidation, carburization, and corrosion in high-temperature and aggressive environments. Incoloy 800 offers excellent structural stability, Incoloy 800HT provides improved creep strength at elevated temperatures, and Incoloy 825 adds superior resistance to a wide range of corrosive media including acids and alkalis.
Incoloy 800
Nickel (Ni)
Chromium (Cr)
Iron (Fe)
Carbon (C) Max
Aluminium (Al)
Titanium (Ti)
Manganese (Mn) Max
Silicon (Si) Max
Sulfur (S) Max
Incoloy 800HT
Nickel (Ni)
Chromium (Cr)
Iron (Fe)
Carbon (C)
Aluminium (Al)
Titanium (Ti)
Manganese (Mn) Max
Silicon (Si) Max
Sulfur (S) Max
Incoloy 825
Nickel (Ni)
Chromium (Cr)
Iron (Fe)
Molybdenum (Mo)
Copper (Cu)
Titanium (Ti)
Carbon (C) Max
Manganese (Mn) Max
Silicon (Si) Max
Types of Incoloy 800, 800HT & 825 Pipes & Tubes
As leading manufacturers and suppliers, we offer a comprehensive range of Incoloy 800, 800HT, and 825 seamless and welded pipes & tubes. Each grade delivers specific advantages for high-temperature, corrosive, and structural service conditions across petrochemical, power generation, and marine industries.
Seamless pipes are manufactured from solid billets using advanced extrusion techniques for superior strength and pressure resistance. Their homogeneous structure ensures reliability in high-stress applications such as heat exchangers, power plants, and chemical processing units operating at extreme temperatures.
Welded pipes offer a cost-effective solution for general engineering and corrosion-resistant services. They are widely used in condenser systems, heat recovery applications, and marine environments where consistent weld integrity and durability are essential. Available in varied diameters and wall thicknesses to meet diverse industrial requirements.
Specification of Incoloy Seamless & Welded Pipes And Tubes
| Specification | Details |
|---|---|
| Incoloy Pipe Specification | ASTM B407, B514 / ASME SB407, SB514 |
| Incoloy Tube Specification | ASME / ASTM SB/B 407 / SB/B 515 |
| Standard | ASTM, ASME and API |
| Tube Size | 15″NB – 150″NB |
| Thickness Range | 6.35 mm OD upto 254 mm OD in 0.6 TO 20 mm thickness |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Threaded |
| End Protection | Plastic Caps |
| Inspection, Test Reports | Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports |
| Packing | Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests |
| Specials | Sizes and Specifications other than above can be manufactured on request |
CHEMICAL COMPOSITION OF INCOLOY ALLOY SEAMLESS / WELDED PIPES AND TUBES
| Incoloy | 800 | 800H | 825 |
|---|---|---|---|
| Ni | 30-35 | 30-35 | 38.0 – 46.0 |
| Fe | 39.5 min | 39.5 min | 22.0 min |
| Cr | 19-23 | 19-23 | 19.5 – 23.5 |
| Cu | 0.75 max | 0.75 max | 1.5 – 3.0 |
| Ti | 0.15-0.60 | 0.15-0.60 | 0.6 – 1.2 |
| Al | 0.15-0.60 | 0.15-0.60 | 0.2 max |
| C | 0.1 max | 0.05-0.1 | 0.05 max |
| Mn | 1.5 max | 1.5 max | 1.0 max |
| S | 0.015 max | 0.015 max | 0.015 max |
| Si | 1.0 max | 1.0 max | 0.5 max |
| Mo | – | – | 2.5 – 3.5 |
MECHANICAL PROPERTIES OF INCOLOY ALLOY 800/800HT/825 PIPES AND TUBES
| Incoloy 800/800HT | |
|---|---|
| Tensile Strength | Psi – 75,000 , MPa – 520 |
| Yield Strength (0.2% Offset) | Psi – 30,000 , MPa – 205 |
| Elongation | 30 % |
| Incoloy 825 | |
|---|---|
| Tensile Strength | Psi – 80,000 , MPa – 550 |
| Yield Strength (0.2% Offset) | Psi – 32,000 , MPa – 220 |
| Elongation | 30 % |
PHYSICAL PROPERTIES OF INCOLOY 800/800HT PIPES AND TUBES
| Density lbm/in³ | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10⁶) | Modulus of Elasticity (psi x 10⁶) | Coefficient of Thermal Expansion (In/in)/ °F x 10⁶ | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
|---|---|---|---|---|---|---|
| at 68°F: 0.285 | 9.4 at 212°F 12.4 at 932°F |
28.3 at 68°F 39.4 at 752°F 49.6 at 1652°F |
28 | 9.4 at 32-212°F 10.2 at 32-1000°F 10.4 at 32-1500°F |
0.1200 at 68°F to 212°F | 2500 to 2590 |
💡 Practical Difference in Use
Use Incoloy 800 when: good oxidation resistance and strength at elevated temperatures are required.
→ Example: heat treatment fixtures, furnace components, chemical process equipment.
Use Incoloy 800HT when: higher temperature applications with better creep rupture strength are needed. → Example: steam methane reformer tubing, pyrolysis furnace tubes, high-temperature heat exchangers.
Use Incoloy 825 when: superior corrosion resistance in reducing and oxidizing acids is essential. → Example: chemical processing equipment, pickling tanks, sulfuric acid environments.
Uses of Incoloy 800/800HT/825 Pipes and Tubes
The uses are defined by their excellent high-temperature strength, outstanding corrosion resistance, and stability in aggressive environments. These nickel-iron-chromium alloys are used in critical applications where reliability is paramount.
- High-Temperature Process Applications: These alloys maintain strength and resist oxidation at elevated temperatures, making them ideal for furnace components and heat treatment equipment.
- Corrosive Chemical Processing: Excellent resistance to a wide range of corrosive media including acids, alkalis, and seawater makes them suitable for chemical processing equipment.
- Critical Industrial Systems: Used in systems where failure is not an option, providing long-term reliability in the most demanding industrial environments.
When to Choose Between Incoloy 800, 800HT, and 825?
This is a critical decision for engineers. Each alloy offers specific advantages for different applications and operating conditions.
Choose Incoloy 800 when:
- Good general-purpose oxidation resistance is required up to 1100°C
- Cost-effective solution for moderate temperature applications
- Carburization resistance in petrochemical processing
- Standard high-temperature strength requirements
Choose Incoloy 800HT when:
- Higher creep and rupture strength above 600°C is critical
- Long-term service in temperatures up to 750°C
- Steam/hydrocarbon reformer applications
- Controlled titanium and aluminum content for stability
Choose Incoloy 825 when:
- Superior corrosion resistance in sulfuric and phosphoric acids
- Resistance to chloride-ion stress-corrosion cracking
- Marine and offshore applications
- Chemical processing with reducing and oxidizing acids
Industries That Use Incoloy 800/800HT/825 Pipes and Tubes
These nickel alloys are specified in industries where extreme temperatures, corrosive environments, or both are encountered. Here are the primary applications:
Critical for high-temperature processing units and reformer systems.
Uses
Steam methane reformer tubes, pyrolysis furnace tubes, transfer lines, and heat exchanger tubing.
Why Incoloy?
Excellent resistance to carburization and oxidation at high temperatures, maintaining strength in reformer environments.
For handling highly corrosive chemicals and acids where standard materials fail.
Uses
Reactor piping, acid production equipment, pickling lines, and chemical storage systems.
Why Incoloy?
Superior resistance to sulfuric acid, phosphoric acid, and other aggressive chemical environments.
Used in conventional and nuclear power plants for critical high-temperature systems.
Uses
Superheater tubes, boiler components, heat exchangers, and steam piping systems.
Why Incoloy?
Excellent creep rupture strength and oxidation resistance at elevated temperatures in power plant environments.
Essential for furnace components and high-temperature processing equipment.
Uses
Radiant tubes, muffles, retorts, baskets, and furnace fixtures.
Why Incoloy?
Maintains structural integrity and resists scaling in repeated thermal cycling up to 1100°C.
For specialized applications in nuclear power generation and processing.
Uses
Heat exchanger tubing, control rod mechanisms, and nuclear process systems.
Why Incoloy?
Good radiation resistance and stability in high-temperature water and steam environments.
For seawater handling and offshore processing applications.
Uses
Seawater piping, ballast systems, heat exchangers, and offshore platform equipment.
Why Incoloy?
Excellent resistance to chloride-ion stress corrosion cracking and marine environments.
For the most corrosive sections of pulp processing and chemical recovery.
Uses
Digester piping, bleach plant equipment, and chemical recovery systems.
Why Incoloy?
Resists corrosive black liquor and acidic cooking chemicals in pulp processing.
For high-temperature and specialized applications in aerospace systems.
Uses
Jet engine components, afterburner parts, and high-temperature ducting systems.
Why Incoloy?
Excellent strength retention and oxidation resistance at elevated temperatures in aerospace environments.
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