Name: Alloy 825 seamless tube
SKU: 2387039

Essential details

Shipping:Express Delivery

Product Introduction

TOKO TECH Nickel Alloy 825 (UNS N08825) Seamless Pipe Product

TOKO TECH Nickel Alloy 825 (commercially known as Incoloy 825) is a nickel-iron-chromium alloy with additions of molybdenum and copper, designed for use in severely corrosive environments. Its seamless pipe form ensures maximum integrity and reliability for critical applications in chemical processing, oil & gas, marine, and pollution control industries.

Key Features & Advantages

Feature	Description
Excellent Corrosion Resistance	Outstanding resistance to both oxidizing and reducing acids, including sulfuric and phosphoric acids. High resistance to chloride-ion stress corrosion cracking and localized attack.
High-Temperature Stability	Good oxidation resistance up to 540°C (1000°F), suitable for various high-temperature corrosive environments.
Versatile Performance	Excellent resistance to pitting and crevice corrosion in chloride-containing environments, plus good resistance to alkaline solutions.
Good Fabricability	Can be readily welded and formed using standard techniques, with proper post-weld heat treatment.
Seamless Integrity	No longitudinal weld eliminates potential weak points, ensuring uniform microstructure and consistent performance throughout the pipe wall.

Chemical Composition (Typical wt.%, per ASTM B423/ASME SB423)

Element	Ni	Cr	Fe	Mo	Cu	Ti	C	Mn	Si	Al	P	S
Content	38.0-46.0	19.5-23.5	≥22.0	2.5-3.5	1.5-3.0	0.6-1.2	≤0.05	≤1.0	≤0.5	≤0.2	≤0.02	≤0.015

Note: The balanced composition provides optimal resistance to various corrosive media.

Mechanical Properties (Room Temperature, Typical)

Property	Value	Test Standard
Tensile Strength	≥586 MPa (85 ksi)	ASTM E8
Yield Strength (0.2% offset)	≥241 MPa (35 ksi)	ASTM E8
Elongation	≥30%	ASTM E8
Hardness (Rockwell B)	≤90 HRB	ASTM E18

Available Specifications

Parameter	Range / Description
Outer Diameter (OD)	6 mm – 300 mm (custom sizes available)
Wall Thickness (WT)	1.0 mm – 30 mm (depending on OD)
Length	Up to 12 m (standard), longer lengths on request
Standards	ASTM B423 / ASME SB423, ASTM B829
Delivery Condition	Solution-annealed, pickled & passivated

Primary Applications

Industry	Typical Applications
Chemical Processing	Sulfuric acid production equipment, phosphoric acid evaporators, pickling tanks
Oil & Gas	Sour gas production tubing, downhole components, piping in chloride-containing environments
Marine & Offshore	Seawater cooling systems, ballast piping, offshore platform components
Pollution Control	Flue gas desulfurization systems, waste water treatment equipment
Nuclear Industry	Nuclear fuel reprocessing equipment, radioactive waste handling
Pharmaceutical	Process equipment requiring high purity and corrosion resistance

Quality Assurance

Check Item	Method / Standard
Chemical Analysis	Optical Emission Spectrometry (OES) / ASTM E1473
Mechanical Testing	Tensile, hardness, flattening, flaring / ASTM E8, E18, B829
Non-Destructive Testing (NDT)	Eddy-current (ET) or ultrasonic (UT) testing per ASTM E426 / E213
Hydrostatic Testing	Per ASTM B829 (optional, as specified)
Intergranular Corrosion Test	ASTM G28 Method A (optional)
Certification	EN 10204-3.1/3.2 material certificates, NACE compliance reports

Special Characteristics

Acid Resistance Excellence – Particularly effective against sulfuric and phosphoric acids across wide concentration ranges
Chloride Stress Corrosion Cracking Resistance – Superior performance in chloride-containing environments compared to standard stainless steels
Titanium Stabilization – Titanium addition prevents sensitization during welding or heat treatment
Versatile Temperature Range – Maintains good mechanical properties from cryogenic temperatures to elevated service temperatures

Key Features & Advantages

Chemical Composition (Typical wt.%, per ASTM B423/ASME SB423)

Mechanical Properties (Room Temperature, Typical)

Available Specifications

Primary Applications

Quality Assurance

Special Characteristics

Why Choose TOKO TECH Alloy 825 Seamless Pipe?

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