Incoloy Tubing
Incoloy tubing is a high-performance nickel-iron-chromium alloy tube engineered for extreme service conditions. It is produced in 3 primary grades, such as Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), and Incoloy 825 (UNS N08825), each offering a distinct balance of strength, oxidation resistance, and corrosion performance. The core composition includes 30–45% nickel, 19–23% chromium, and controlled additions of iron, with Incoloy 825 further enhanced by molybdenum and copper for superior acid resistance.
Incoloy tubing has three important features that make it the preferred choice in critical industries, such as resistance to stress corrosion cracking in chloride and caustic environments, thermal stability up to 1100°C, and compliance with ASTM and ASME high-pressure service standards. It is used in chemical processing facilities, power generation systems, oil and gas installations, and marine heat exchangers.
Incoloy Tubing Prices
Incoloy tubing prices in India depend on the grade, outer diameter, wall schedule, and order quantity. Understanding each cost consideration helps with more accurate procurement budget planning.
Approximate Price Range:
The price typically ranges from Rs 1,800 to Rs 3,000 per kg for standard grades. The final rate depends on the alloy grade, OD, and wall thickness selected.
Factors Affecting Price
- Grade and alloy content: Incoloy 825 carries more molybdenum and copper than Incoloy 800. Raw material cost rises accordingly.
- Wall thickness and schedule: Heavier schedules consume more alloy per unit length. Cost per kg increases with wall thickness.
- Manufacturing method: Seamless Incoloy tubing carries a higher price than welded variants due to tighter tooling requirements and lower production volumes.
- Market fluctuations: Nickel and molybdenum spot prices on the LME directly affect raw material costs. Confirm current pricing before placing bulk orders.
Incoloy Tubing Grades
Incoloy tubing is produced in multiple grades, each optimised for a specific combination of corrosion resistance, strength, and operating temperature. The common grades include:
- Incoloy 800 Tubing
- Incoloy 825 Tubing
- Incoloy 925 Tubing
Types Of Incoloy Tubing
Incoloy tubing is available in 2 primary product forms, selected based on pressure rating, service environment, and fabrication requirements.
- Seamless Incoloy tubing
- Welded/ERW Incoloy tubing
Incoloy Tubing Specifications
The table below covers governing standards, dimensional range, mechanical properties, and delivery conditions for Incoloy tubing selection and procurement.
|
Category |
Specification details |
|
Material grades |
Incoloy 800 (UNS N08800, W‑Nr 1.4876), Incoloy 800H (UNS N08810), Incoloy 825 (UNS N08825, W‑Nr 2.4858) |
|
Standards |
Seamless tubing: ASTM B163 / ASME SB‑163 Seamless pipe‑type: ASTM B407 / ASME SB‑407 (800/800H) Incoloy 825 tubing: ASTM B423 / ASME SB‑423 Welded tubing: ASTM B515 / ASME SB‑515 (where applicable) |
|
Forms |
Seamless cold‑drawn tubing (condenser, heat‑exchanger, boiler tubes) Hot‑finished / hot‑drawn tubing (larger‑diameter pressure tubing) Welded / ERW tubing (instrument‑type and light‑duty service) |
|
Size range (OD) |
Seamless tubing: 1/4" – 12" (≈6–305 mm) Instrument tubing: ≈5–19 mm (≈0.2–0.75") |
|
Wall thickness |
Typically ≈0.5–20 mm, depending on OD and schedule (SCH 5, 10, 40, 80, etc., where pipe‑sizing is used) |
|
Mechanical properties (typical, 800H/825) |
0.2% yield strength: ≥40–45 ksi (≈275–310 MPa) at room temperature Tensile strength: ≥75–85 ksi (≈515–585 MPa) Elongation: ≥30–35% in 2" gauge length (annealed) |
|
Heat treatment |
Annealed (solution‑annealed) for maximum ductility and corrosion resistance Stress‑relieved or cold‑worked options are available for higher strength Typical annealing: ≈1035–1120 °C (1900–2050 °F), rapid cooling (often water quench) |
|
Surface & finish |
Smooth, commercially straight, free from kinks, laps, and injurious defects Suitable for condenser, heat‑exchanger, and boiler‑tube service Optional bright‑annealed or polished finishes for instrumentation |
|
Testing & certification |
Hydrostatic test or nondestructive electric test per ASTM B163 / B423 / B407 Chemical analysis per ASTM E109 / E1473 or equivalent Mill test certificates (MTC) as per requirement (e.g., EN 10204 3.1 / 3.2) |
Incoloy Tubing Size Chart
Incoloy tubing OD sizes range from 0.125" to 16", covering instrument, hydraulic, and heavy-duty pressure services. Use this chart to confirm the correct OD and wall range for your application.
|
Form / Alloy type |
OD range (inch) |
OD range (mm) |
Wall/thickness notes |
|
Incoloy 800 / 800H seamless tube |
0.375" – 12" |
≈9.5 – 305 mm |
Standard pressure‑tube sizes; various SWG or schedule‑equivalent walls. |
|
Incoloy 800 / 800H welded tube |
0.125" – 1" |
≈3.2 – 25.4 mm |
Light‑gauge, instrument‑type tubing. |
|
Incoloy 825 seamless tubing |
0.5" – 16" |
≈12.7 – 406.4 mm |
Standard sizes; custom up to about 203–204 mm OD. |
|
Incoloy 825 welded/drawn tube |
5–19 mm (≈0.2–0.75") |
5.0–19.0 mm |
Fine‑gauge instrument, hydraulic, and control‑system tubing. |
|
Incoloy 825 instrument tubing (wall examples) |
1/16" – 3" (OD) |
≈1.6 – 76 mm |
0.010", 0.020", 0.028", 0.035", 0.049–0.125" wall options on selected ODs. |
Schedule Chart Of Incoloy Tubing
Wall thickness increases with schedule number. A higher schedule delivers a thicker wall and a higher pressure rating. Use this chart to confirm the correct wall specification for your operating pressure and temperature.
|
Nominal pipe size (NPS) |
OD (inch) |
Common schedule (SCH) |
Typical wall (inch) |
|
1/4" |
0.500 |
5, 10 |
0.065–0.083 |
|
3/8" |
0.625 |
5, 10 |
0.065–0.091 |
|
1/2" |
0.840 |
5, 10, 40 |
0.065–0.147 |
|
3/4" |
1.050 |
5, 10, 40 |
0.065–0.154 |
|
1" |
1.315 |
5, 10, 40 |
0.065–0.179 |
|
1 1⁄4" |
1.660 |
5, 10, 40 |
0.065–0.191 |
|
1 1⁄2" |
1.900 |
5, 10, 40 |
0.065–0.200 |
|
2" |
2.375 |
5, 10, 40 |
0.083–0.218 |
|
2 1⁄2" |
2.875 |
5, 10, 40 |
0.083–0.276 |
|
3" |
3.500 |
10, 40 |
0.083–0.300 |
|
4" |
4.500 |
10, 40 |
0.083–0.337 |
|
4"–6" (larger tubing) |
4.500–6.625 |
40, 80, 160 (seamless) |
0.237–0.337 (40); up to thicker walls for 80/160 |
Key Features Of Incoloy Tubing
Incoloy tubing is specified for 6 performance characteristics that standard stainless steel grades cannot consistently deliver under combined thermal, mechanical, and corrosive loading.
- Corrosion resistance
- High temperature stability
- Oxidation resistance
- Strength and durability
- Thermal stability
- Versatility
Applications Of Incoloy Tubing
Incoloy tubing serves 6 major industries where elevated temperatures, aggressive media, or high-pressure conditions rule out conventional tube materials.
- Chemical processing
- Aerospace
- Power generation
- Marine engineering
- Oil and gas industry
- Heat treatment
How To Choose The Right Incoloy Tubing Supplier And Manufacturer?
Selecting the right Incoloy tubing supplier directly affects material integrity, lead times, and total procurement cost. Evaluate these 4 areas before finalising a vendor.
Selecting The Right Supplier And Manufacturer:
Confirm that the manufacturer produces Incoloy tubing in the exact grade and OD required. Not all facilities process Incoloy alloys. Verify production capabilities for UNS N08800, N08810, and N08825 before filing an RFQ.
Technical Considerations:
Match the grade to the service environment, whether the concern is high-temperature oxidation, acidic media, or chloride exposure. Request a Material Test Certificate (MTC) confirming chemical composition and mechanical properties. Confirm compliance with ASTM B163, B407, or B423 as applicable. The custom wall schedules typically carry 8–12 week lead times; check stock availability early.
Evaluating Supplier Credibility:
A reliable Incoloy tubing supplier holds ISO 9001 certification at a minimum. Every tube batch must carry a heat number traceable to the originating mill. This is mandatory for project documentation and quality audits.
Procurement Strategy:
Send a clear RFQ with grade (UNS number), OD, schedule, finish, governing standard, and quantity. Evaluate at least three supplier proposals based on pricing, lead time, MTC availability, and minimum order quantities. For bulk orders, plan a pre-dispatch inspection (PDI) or third-party inspection (TPI) at the manufacturer's facility.
Incoloy tubing is a high-performance nickel-iron-chromium alloy tube engineered for extreme service conditions. It is produced in 3 primary grades, such as Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), and Incoloy 825 (UNS N08825), each offering a distinct balance of strength, oxidation resistance, and corrosion performance. The core composition includes 30–45% nickel, 19–23% chromium, and controlled additions of iron, with Incoloy 825 further enhanced by molybdenum and copper for superior acid resistance.
Incoloy tubing has three important features that make it the preferred choice in critical industries, such as resistance to stress corrosion cracking in chloride and caustic environments, thermal stability up to 1100°C, and compliance with ASTM and ASME high-pressure service standards. It is used in chemical processing facilities, power generation systems, oil and gas installations, and marine heat exchangers.
Incoloy Tubing Prices
Incoloy tubing prices in India depend on the grade, outer diameter, wall schedule, and order quantity. Understanding each cost consideration helps with more accurate procurement budget planning.
Approximate Price Range:
The price typically ranges from Rs 1,800 to Rs 3,000 per kg for standard grades. The final rate depends on the alloy grade, OD, and wall thickness selected.
Factors Affecting Price
- Grade and alloy content: Incoloy 825 carries more molybdenum and copper than Incoloy 800. Raw material cost rises accordingly.
- Wall thickness and schedule: Heavier schedules consume more alloy per unit length. Cost per kg increases with wall thickness.
- Manufacturing method: Seamless Incoloy tubing carries a higher price than welded variants due to tighter tooling requirements and lower production volumes.
- Market fluctuations: Nickel and molybdenum spot prices on the LME directly affect raw material costs. Confirm current pricing before placing bulk orders.
Incoloy Tubing Grades
Incoloy tubing is produced in multiple grades, each optimised for a specific combination of corrosion resistance, strength, and operating temperature. The common grades include:
- Incoloy 800 Tubing
- Incoloy 825 Tubing
- Incoloy 925 Tubing
Types Of Incoloy Tubing
Incoloy tubing is available in 2 primary product forms, selected based on pressure rating, service environment, and fabrication requirements.
- Seamless Incoloy tubing
- Welded/ERW Incoloy tubing
Incoloy Tubing Specifications
The table below covers governing standards, dimensional range, mechanical properties, and delivery conditions for Incoloy tubing selection and procurement.
|
Category |
Specification details |
|
Material grades |
Incoloy 800 (UNS N08800, W‑Nr 1.4876), Incoloy 800H (UNS N08810), Incoloy 825 (UNS N08825, W‑Nr 2.4858) |
|
Standards |
Seamless tubing: ASTM B163 / ASME SB‑163 Seamless pipe‑type: ASTM B407 / ASME SB‑407 (800/800H) Incoloy 825 tubing: ASTM B423 / ASME SB‑423 Welded tubing: ASTM B515 / ASME SB‑515 (where applicable) |
|
Forms |
Seamless cold‑drawn tubing (condenser, heat‑exchanger, boiler tubes) Hot‑finished / hot‑drawn tubing (larger‑diameter pressure tubing) Welded / ERW tubing (instrument‑type and light‑duty service) |
|
Size range (OD) |
Seamless tubing: 1/4" – 12" (≈6–305 mm) Instrument tubing: ≈5–19 mm (≈0.2–0.75") |
|
Wall thickness |
Typically ≈0.5–20 mm, depending on OD and schedule (SCH 5, 10, 40, 80, etc., where pipe‑sizing is used) |
|
Mechanical properties (typical, 800H/825) |
0.2% yield strength: ≥40–45 ksi (≈275–310 MPa) at room temperature Tensile strength: ≥75–85 ksi (≈515–585 MPa) Elongation: ≥30–35% in 2" gauge length (annealed) |
|
Heat treatment |
Annealed (solution‑annealed) for maximum ductility and corrosion resistance Stress‑relieved or cold‑worked options are available for higher strength Typical annealing: ≈1035–1120 °C (1900–2050 °F), rapid cooling (often water quench) |
|
Surface & finish |
Smooth, commercially straight, free from kinks, laps, and injurious defects Suitable for condenser, heat‑exchanger, and boiler‑tube service Optional bright‑annealed or polished finishes for instrumentation |
|
Testing & certification |
Hydrostatic test or nondestructive electric test per ASTM B163 / B423 / B407 Chemical analysis per ASTM E109 / E1473 or equivalent Mill test certificates (MTC) as per requirement (e.g., EN 10204 3.1 / 3.2) |
Incoloy Tubing Size Chart
Incoloy tubing OD sizes range from 0.125" to 16", covering instrument, hydraulic, and heavy-duty pressure services. Use this chart to confirm the correct OD and wall range for your application.
|
Form / Alloy type |
OD range (inch) |
OD range (mm) |
Wall/thickness notes |
|
Incoloy 800 / 800H seamless tube |
0.375" – 12" |
≈9.5 – 305 mm |
Standard pressure‑tube sizes; various SWG or schedule‑equivalent walls. |
|
Incoloy 800 / 800H welded tube |
0.125" – 1" |
≈3.2 – 25.4 mm |
Light‑gauge, instrument‑type tubing. |
|
Incoloy 825 seamless tubing |
0.5" – 16" |
≈12.7 – 406.4 mm |
Standard sizes; custom up to about 203–204 mm OD. |
|
Incoloy 825 welded/drawn tube |
5–19 mm (≈0.2–0.75") |
5.0–19.0 mm |
Fine‑gauge instrument, hydraulic, and control‑system tubing. |
|
Incoloy 825 instrument tubing (wall examples) |
1/16" – 3" (OD) |
≈1.6 – 76 mm |
0.010", 0.020", 0.028", 0.035", 0.049–0.125" wall options on selected ODs. |
Schedule Chart Of Incoloy Tubing
Wall thickness increases with schedule number. A higher schedule delivers a thicker wall and a higher pressure rating. Use this chart to confirm the correct wall specification for your operating pressure and temperature.
|
Nominal pipe size (NPS) |
OD (inch) |
Common schedule (SCH) |
Typical wall (inch) |
|
1/4" |
0.500 |
5, 10 |
0.065–0.083 |
|
3/8" |
0.625 |
5, 10 |
0.065–0.091 |
|
1/2" |
0.840 |
5, 10, 40 |
0.065–0.147 |
|
3/4" |
1.050 |
5, 10, 40 |
0.065–0.154 |
|
1" |
1.315 |
5, 10, 40 |
0.065–0.179 |
|
1 1⁄4" |
1.660 |
5, 10, 40 |
0.065–0.191 |
|
1 1⁄2" |
1.900 |
5, 10, 40 |
0.065–0.200 |
|
2" |
2.375 |
5, 10, 40 |
0.083–0.218 |
|
2 1⁄2" |
2.875 |
5, 10, 40 |
0.083–0.276 |
|
3" |
3.500 |
10, 40 |
0.083–0.300 |
|
4" |
4.500 |
10, 40 |
0.083–0.337 |
|
4"–6" (larger tubing) |
4.500–6.625 |
40, 80, 160 (seamless) |
0.237–0.337 (40); up to thicker walls for 80/160 |
Key Features Of Incoloy Tubing
Incoloy tubing is specified for 6 performance characteristics that standard stainless steel grades cannot consistently deliver under combined thermal, mechanical, and corrosive loading.
- Corrosion resistance
- High temperature stability
- Oxidation resistance
- Strength and durability
- Thermal stability
- Versatility
Applications Of Incoloy Tubing
Incoloy tubing serves 6 major industries where elevated temperatures, aggressive media, or high-pressure conditions rule out conventional tube materials.
- Chemical processing
- Aerospace
- Power generation
- Marine engineering
- Oil and gas industry
- Heat treatment
How To Choose The Right Incoloy Tubing Supplier And Manufacturer?
Selecting the right Incoloy tubing supplier directly affects material integrity, lead times, and total procurement cost. Evaluate these 4 areas before finalising a vendor.
Selecting The Right Supplier And Manufacturer:
Confirm that the manufacturer produces Incoloy tubing in the exact grade and OD required. Not all facilities process Incoloy alloys. Verify production capabilities for UNS N08800, N08810, and N08825 before filing an RFQ.
Technical Considerations:
Match the grade to the service environment, whether the concern is high-temperature oxidation, acidic media, or chloride exposure. Request a Material Test Certificate (MTC) confirming chemical composition and mechanical properties. Confirm compliance with ASTM B163, B407, or B423 as applicable. The custom wall schedules typically carry 8–12 week lead times; check stock availability early.
Evaluating Supplier Credibility:
A reliable Incoloy tubing supplier holds ISO 9001 certification at a minimum. Every tube batch must carry a heat number traceable to the originating mill. This is mandatory for project documentation and quality audits.
Procurement Strategy:
Send a clear RFQ with grade (UNS number), OD, schedule, finish, governing standard, and quantity. Evaluate at least three supplier proposals based on pricing, lead time, MTC availability, and minimum order quantities. For bulk orders, plan a pre-dispatch inspection (PDI) or third-party inspection (TPI) at the manufacturer's facility.
Incoloy Tubing Suppliers
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