ASTM B163 / ASME SB163 UNS N08825 / DIN 2.4858 / INCOLOY 825 NICKEL ALLOY SEAMLESS TUBE
ASTM B163/ASME SB163 UNS NO8825/DIN 2.4858/INCOLOY 825 NICKEL ALLOY SEAMLESS TUBE
Overview:
Incoloy 825 is a nickel-iron-chromium alloy that offers excellent corrosion resistance in acidic and oxidizing environments. It also provides good resistance to stress-corrosion cracking and pitting. Incoloy 825 is often used in chemical processing, oil and gas production, and marine environments.
Incoloy 825 seamless tubes are highly resistant to corrosion in aggressive environments, such as those containing sulfuric or phosphoric acid, as well as in seawater and brine. The tubes offer excellent mechanical properties, including high strength and toughness.
The seamless tubes are produced using advanced extrusion processes that ensure uniform wall thickness, high dimensional accuracy, and excellent surface finish. The manufacturing process supports the production of tubes in various sizes, thicknesses, and shapes, with precise tolerances.
The tubes are suitable for use in high-pressure and high-temperature applications, such as heat exchangers, condensers, and pressure vessels due to their excellent resistance to corrosion and oxidation at high temperatures.
Incoloy 825 seamless tubes can be used in many different environments, including those with oxidizing and reducing acids and chlorine solutions. They are also suitable for use in harsh environments that can cause stress-corrosion cracking.
The tubes exhibit excellent resistance to impact and thermal fatigue, making them ideal for use in harsh operating conditions where there are frequent temperature changes and vibrations.
Specification:
| Specifications | ASTM B163 & Its equivalent ASME, DIN & EN Standard |
| Grades | UNS N08825/DIN 2.4858/INCOLOY 825 |
| Type | U-bend / Straight seamless tube |
| Outside Diameter | 1/4'' to 2'' or custom size |
| Wall Thickness | BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10 |
| Length | Upto 6 meters, custom cut lengths |
| Delivery Condition | Solution Annealed & Pickled |
| Ends | Plain End, Beveled End |
| Other Testing | Product Analysis, Eddy Current Test, Hydrostatic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc. |
| Dimension | All Pipes & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Packing | Plywood case/Woven bag in bundle |
Chemical Composition:
| Grade | Ni | Cu | Mo | Fe | Mn | C | Si | S | Cr | Al | Ti |
| UNS N08825 | 38.0-46.0 | 1.5-3.0 | 2.5-3.5 | 22.0 min. | 1.0 max. | 0.05 max. | 0.50 max. | 0.03 max. | 19.5-23.5 | 0.2 max. | 0.6-1.2 |
Mechanical Properties:
| Grade | Tensile Strength, min, ksi (MPa) |
Yield Strength, min, ksi (MPa) |
Elongation in 2 in. or 50mm, min (%) |
| UNS N08825 | 85(586) | 35(241) | 30 |
Applications:
1.Sulphuric acid piping and vessels
2.Phosphoric acid evaporators
3.Pickling tank heaters, pickling tanks and equipment
4.Chemical process equipment
5.Propellor shafts
6.Tank trucks
7.Calorifiers
8.Electrostatic precipitator electrodes
9.Hot vessels for food, water and seawater,
10.ammonium sulphate vessels
11.Expansion bellows
12.Marine exhaust systems
13.Power station ash hoppers
14.Ethylene furnace quench boilersHydrocarbon cracking Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
15.Industrial furnaces
16.Heat-treating equipment
17.Chemical and petrochemical processing
18.Super-heater and re-heaters in power plants
19.Pressure vessels
20.Heat exchanger
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