Incoloy 825 Pipes Manufacturer
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Midland Alloys is a trusted and leading Incoloy 825 Seamless Pipe manufacturer, known for providing high-performance pipes to global industries. Incoloy 825 Pipes are made of a nickel, chromium, and iron alloy with additional molybdenum, copper, and titanium to improve corrosion resistance. This pipe is known as Incoloy® 825 or UNS N08825 meets ASTM B423 and ASME SB423 standards. We manufacture both Incoloy Alloy 825 seamless pipes and welded pipes available in sizes ranging from 4mm to 1219.2mm and thicknesses from 0.5mm to 20mm. Pipes are created in round, square, and rectangular shapes, with custom sizes and dimensions available upon request. Our seamless pipes are manufactured with high-quality extrusion and cold drawing methods to provide precise tolerances and a clean finish. Welded pipes are manufactured using precision shaping and automatic welding, followed by thorough testing to ensure leak-proof strength and longevity.
Key Benefits of ASTM B423 UNS N08825 Pipe
- Handle high temperature and pressure efficiently to ensure stable performance without deformation or material breakdown even in demanding industrial applications.
- These pipes perform well in seawater and marine atmospheres, providing strong resistance to pitting and crevice corrosion caused by chlorides.
- Resist stress corrosion cracking which make pipe highly reliable in sour gas and other aggressive environments.
- These pipes offer excellent protection against sulfuric and phosphoric acids to ensure safe and durable operation in chemical processing units.
- Withstands rough operating conditions in fertilizer plants, acid production units, and other chemical industries where corrosive exposure is constant.
- Delivers long-lasting service life with minimal maintenance needs, reducing downtime and overall operational costs in corrosive zones.
- Available in Incoloy UNS No 8825 Clad Pipe, which is ideal for applications demanding corrosion-resistant cladding for cost-effective performance.
- Incoloy Alloy 825 Round Pipe provides versatile usage in industries requiring high strength and resistance to multiple corrosive elements.
Is Incoloy 800 Better than 825 Pipe?
Specification of Incoloy 825 Pipes

Seamless Pipe OD : ½″ NB – 12″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB

ASTM B423 / ASME SB423

Seamless, ERW, Welded, Fabricated

Round, Square, Rectangular, Hydraulic Etc

Single Random, Double Random & Cut Length.

Plain End, Beveled End, Treaded

SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS

No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,
Types of Incoloy 825 Pipes
Manufacturing Types
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Seamless PipeWeld-free, perfect for even strength and sizing precision.
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Welded PipeWelded from flat-rolled steel, widely used where economy and large sizes are required.
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ERW PipeElectric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
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EFW PipeElectric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.
Pipe Forms
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Round PipeThe most common shape for fluid and gas transport.
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Square PipeUsed in architectural and structural applications requiring angular profiles.
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Rectangular PipeProvides greater strength in load-bearing regions and flat structures.
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Hydraulic PipeDesigned to provide precise dimensional control for fluid systems under pressure.
Contact us today to discuss how Incoloy 825 Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| Grade | C | Mn | Si | Fe | S | Cr | Cu | Ti | |
| 825 | min. | – | – | – | 22.0 | – | 19.5 | 1.5 | 0.6 |
| max. | 0.05 | 1.0 | 0.5 | – | 0.015 | 23.5 | 3.0 | 1.2 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 825 | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 | – | – |
| Grade | UNS No | Old British | Euronorm | GOST | Japanese JIS | ||
| BS | En | No | AFNOR | ||||
| Incoloy 825 | N08825 | NA 16 | NiCr21Mo | 2.4858 | NFE30C20DUM | ЭП703 | NCF 825 |
Incoloy Pipes Grades We Offer
Incoloy 825 Pipe Dimensions
| Alloy | Product form | Dimension |
| INCOLOY 800 (32 Ni/21 Cr) | Pipe; cold drawn, pickled, annealed | 13.72 x 2.24 mm (¼”nb sch40s) |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; seamless, cold finished, solution annealed | 26.67 x 3.91 mm (¾”nb sch80s) |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; cold drawn, pickled, solution annealed | 33.40 x 3.38 mm (1″nb sch40s) |
| ALLOY 800HT (32 Ni/21 Cr) | Pipe; seamless, cold finished, annealed | 33.40 x 4.55 mm (1″nb sch80s) |
| ALLOY 800HT (32 Ni/21 Cr) | Pipe; seamless, cold finished, annealed | 48.26 x 3.68 mm (1½”nb Sch40s) |
| INCOLOY 800 (32 Ni/21 Cr) | Pipe; cold drawn, pickled, annealed | 50.8 x 2.64 mm |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; cold drawn, pickled, solution annealed | 60.33 x 3.91 mm (2″nb sch40s) |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; cold drawn, pickled, solution annealed | 60.33 x 2.77 mm (2″nb Sch10s) |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; cold drawn, pickled, solution annealed | 60.33 x 3.91 mm (2″nb sch40s) |
| INCOLOY 800HT (32 Ni/21 Cr) | Pipe; cold drawn, pickled, solution annealed | 88.90 x 5.49 mm (3″nb sch40s) |
| ALLOY 800HT (32 Ni/21 Cr) | Pipe; seamless, hot finished, pickled, passivated | 114.3 x 6.02 mm (4″nb sch40s) |
Incoloy 825 Pipe Thickness Chart
| Nominal | O.D. Inches | 10s | 10 | 40s & Std | 40 | 80s & E.H. | 80 | 160 |
| 1/8 | .405 | .049 | .049 | .068 | .068 | .095 | .095 | |
| 1/4 | .540 | .065 | .065 | .088 | .088 | .119 | .119 | |
| 3/8 | .675 | .065 | .065 | .091 | .091 | .126 | .126 | |
| 1/2 | .840 | .083 | .083 | .109 | .109 | .147 | .147 | .187 |
| 3/4 | 1.050 | .083 | .083 | .113 | .113 | .154 | .154 | .218 |
| 1 | 1.315 | .109 | .109 | .133 | .133 | .179 | .179 | .250 |
| 1 1/4 | 1.660 | .109 | .109 | .140 | .140 | .191 | .191 | .250 |
| 1 1/2 | 1.900 | .109 | .109 | .145 | .145 | .200 | .200 | .281 |
| 2 | 2.375 | .109 | .109 | .154 | .154 | .218 | .218 | .343 |
| 2 1/2 | 2.875 | .120 | .120 | .203 | .203 | .276 | .276 | .375 |
| 3 | 3.500 | .120 | .120 | .216 | .216 | .300 | .300 | .437 |
| 3 1/2 | 4.000 | .120 | .120 | .226 | .226 | .318 | .318 | |
| 4 | 4.500 | .120 | .120 | .237 | .237 | .337 | .337 | .531 |
| 4 1/2 | 5.000 | .247 | .355 | |||||
| 5 | 5.563 | .134 | .134 | .258 | .258 | .375 | .375 | .625 |
| 6 | 6.625 | .134 | .134 | .280 | .280 | .432 | .432 | .718 |
| 7 | 7.625 | .301 | .500 | |||||
| 8 | 8.625 | .148 | .148 | .322 | .322 | .500 | .500 | .906 |
| 9 | 9.625 | .342 | .500 | |||||
| 10 | 10.750 | .165 | .165 | .365 | .365 | .500 | .593 | 1.125 |
| 11 | 11.750 | .375 | .500 | |||||
| 12 | 12.750 | .180 | .180 | .375 | .406 | .500 | .687 | 1.312 |
| 14 | 14.000 | .188 | .250 | .375 | .437 | .500 | .750 | 1.406 |
| 16 | 16.000 | .188 | .250 | .375 | .500 | .500 | .843 | 1.593 |
| 18 | 18.000 | .188 | .250 | .375 | .562 | .500 | .937 | 1.781 |
Manufacturing Process of Incoloy 825 Pipes
Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping
Incoloy 825 UNS N08825 SCH 40 Seamless Pipe Applications
Why Choose Midland Alloys Inc. for Schedule 40 2.4858 Incoloy Pipe
Frequently Asked Questions About Incoloy 825 Pipes
870–1180°C. This range supports both high-heat processing and long-term service.
Incoloy 825 pipe provide better resistance to strong acids, especially in hot environments. 316 SS pipe works well for general corrosion and does not perform as strongly in harsh acid conditions. incoloy 825 pipe handle higher temperature and pressure conditions better.



