MachineU > China Products > Minerals & Metallurgy > Carbon Steel > Steel Pipes > Seamless Steel Pipes
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
Specifications
Delivery Time :
7days
Standard :
ASTM B163, ASME SB163
Model Number :
ASME SB163 UNS N08825 Nickel Alloy Seamless Tube
Process :
Cold Drawn
MOQ :
500kgs
Packaging Details :
Ply-wooden Case / Bundle with plastic Cap
Tube End :
Plain End, Beveled End
Payment Terms :
L/C,T/T
Material :
Incoloy/Alloy 825, UNS N08825, 2.4858
Length :
Single Random, Double Random & Cut Length
Price :
NEGOTIABLE
OD :
1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc.
WT :
BWG 25, 22, 20, 18 ... 10
High Light :
ASME SB163 UNS N08825 Nickel Alloy Tube, Incoloy 825 Seamless Heat Exchanger Tube
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
Production Name :
Nickel Alloy Tube
Brand Name :
YUHONG
Application :
Boiler, Heat Exchanger, Oil and Gas Plant, Cooling, Condenser
Description

ASME SB163 UNS N08825 / Incoloy 825 Nickel Alloy Tube Seamless Heat Exchanger Tube

ASME SB163 UNS N08825 is a specification for seamless, cold-finished nickel-iron-chromium tubes, commonly known as Incoloy 825 and 2.4858. Manufactured in a pickled condition to remove scale and enhance surface cleanliness, these tubes offer exceptional resistance to sulfuric, phosphoric, and organic acids, plus chloride-induced pitting and stress corrosion cracking. With added molybdenum, copper, and titanium for stabilization, they are specifically engineered for high-performance heat exchangers, condensers, and coolers operating in aggressive environments like oil & gas, chemical processing, and marine service.

The "Goldilocks" Economic Advantage

  • Cost-Effective Upgrade: It costs roughly 3.5–4.5x more than 316L, but only ~50–60% of the cost of Hastelloy C-276 or Alloy 625. It occupies the critical middle tier—used precisely when 316L is guaranteed to fail, but C-276 would be over-engineered and budget-breaking.

  • Extended Service Life: In sour oil/gas and phosphoric acid plants, its lifespan often exceeds 15–20 years, drastically reducing plant downtime for re-tubing compared to carbon steel or low-grade stainless.

  • NACE Compliance: It fully complies with NACE MR0175 / ISO 15156 for sour service, eliminating the need for expensive chemical inhibition dosing in H₂S environments.



Equivalent Grades of ASME SB163 UNS N08825 / Incoloy 825 Nickel Alloy Tube Pickled Heat Exchanger Tube

STANDARDWERKSTOFF NR.UNSJISBSGOSTAFNORENOR
Incoloy 8252.4858N08825NCF 825NA 16ЭП703NFE30C20DUMNiCr21MoXH38BT

Chemical Composition % of ASME SB163 UNS N08825 / Incoloy 825 Nickel Alloy Tube Pickled Heat Exchanger Tube

GradeCMnSiSCuFeNiCrAlTi
Incoloy 8250.05 max1.00 max0.05 max0.03 max1.50 – 3.0022.00 min38.00 – 46.0019.50 – 23.500.02 max0.06 – 1.20



Mechanical properties of ASME SB163 UNS N08825 / Incoloy 825 Nickel Alloy Tube Pickled Heat Exchanger Tube

ElementDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
Incoloy 8258.14 g/cm31400 °C (2550 °F)Psi – 80,000 , MPa – 550Psi – 32,000 , MPa – 22030 %

Exceptional Corrosion Resistance (Application Suitability)
Incoloy 825 is chosen for heat exchangers because it resists a wide range of aggressive media:

  • Sulfuric Acid: Excellent resistance up to 60°C in various concentrations.

  • Phosphoric Acid: Superior resistance, widely used in fertilizer production.

  • Organic Acids: Resists formic, acetic, and fatty acids.

  • Chloride Stress Corrosion Cracking (SCC): While not as immune as Alloy 600, it offers superior resistance to chloride SCC compared to 304/316 stainless steels.

  • Pitting/Crevice Corrosion: The Molybdenum content provides robust resistance in seawater and brackish water.

  • Oxidizing/Acid Chlorides: Resists pitting in sour service (H₂S) environments.



Application
These tubes are critical in severe operating environments:



  • Oil & Gas: Sour gas processing, downhole tubing, and cooler/condenser units handling H₂S and CO₂.

  • Chemical Processing: Heat exchangers in the production of sulfuric acid, phosphoric acid (wet-process), and petrochemical cracking.

  • Marine & Offshore: Shipboard heat exchangers, seawater cooling systems, and ballast water treatment units.

  • Pollution Control: Wet scrubber systems and flue gas desulfurization (FGD) heat exchangers.

  • Nuclear Fuel Reprocessing: Due to its resistance to nitric acid.

ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
Send your message to this supplier
Send Now

ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube

Ask Latest Price
Product Detail
Delivery Time :
7days
Standard :
ASTM B163, ASME SB163
Model Number :
ASME SB163 UNS N08825 Nickel Alloy Seamless Tube
Process :
Cold Drawn
MOQ :
500kgs
Packaging Details :
Ply-wooden Case / Bundle with plastic Cap
Contact Supplier
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube
ASME SB163 UNS N08825 / Incoloy 825 Seamless Nickel Alloy Tube Pickled Heat Exchanger Tube

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Nickel Alloy Steel Heat Exchanger Tube
MachineU China Products Minerals & Metallurgy Carbon Steel Steel Pipes Seamless Steel Pipes
Contact Supplier
Submit Requirement