Alloy 825 Tube

1. Material: UNS N08825, Din 2.4858, Incoloy 825, Alloy 825
2. Diameters: 4.0 - 203.2 mm
3. Wall thickness: 0.3 to 50mm
4. Service: Cutting, Welding, Fabricated, Customized
5. Standard: ASTM B423, ASME SB 423

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Product Introduction

Alloy 825 Tube is a nickel-iron-chromium alloy with added copper, molybdenum, and titanium. 2.4858 Alloy 825 has excellent corrosion resistance, high strength, and good weldability. It is known for its excellent resistance to a variety of corrosive environments and is particularly suitable for applications involving acids, alkalis, and oxidizing and reducing media. Nickel 825 is a popular choice for the oil and gas industry, chemical processing, pollution control, and marine applications.

2.4858 Alloy 825 Pipe Tube Material Standard:

ASTM B163 Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes

ASTM B407 Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

ASTM B423 Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825, N08221, and N06845) Seamless Pipe and Tube

ASTM B423 INCOLOY 825 PIPE SPECIFICATION

Specifications : ASTM B423 / ASTM SB 423
Type : Seamless / ERW / Welded / Fabricated / CDW
Size : 15"NB TO 150"NB IN
Length :Single Random, Double Random & Required Length
Standards : ASTM, ASME and API
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
End : Plain End, Beveled End, Treaded
Form : Round Pipes/Tubes, Tubes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes

Incoloy 825 Typical Physical Properties

Incoloy Alloy 825	UNS N08825	70°F	200°F	400°F	600°F	800°F	1000°F	1200°F
Density	lbs/in3	0.294	-	-	-	-	-	-
Thermal Expansion	X10-6/°F	-	7.8	8.3	8.5	8.7	9.5	9.6
Elastic Modulus	103 ksi	28.3	27.9	27.1	26	25.2	23.52	22.37
Poisson Ratio	-	0.3	0.3	0.3	-	-	0.367	0.377
Thermal Conductivity	Btu-in/h·ft2·°F	-	85	97.5	109.6	119.7	139	152
Specific Heat	Btu/lb·°F	0.105	0.11	0.117	0.123	0.123	0.13	0.14
Yield Strength	ksi	35	30	26	25	23	12	11
Tensile Strength	ksi	85	77	75	73	71	52	44

Chemical Composition of Alloy 825 Tube

Nickel (38.0% - 46.0%
Chromium (19.5% - 23.5%)
Iron (22.0%min)
Copper (1.5% - 3.0%): The addition of copper enhances the resistance of the Incoloy 825 seamless tube to acidic media such as sulfuric acid.
Molybdenum (2.5% - 3.5%): The presence of molybdenum improves the corrosion resistance of alloy 825 instrument tubing.
Titanium (0.6% - 1.2%): The addition of titanium helps stabilize the microstructure of the alloy, improving high temperature strength and corrosion resistance.
Aluminum (0.2% max)

UNS N06625 Vs UNS N08825

Alloy 625: Alloy 625 contains elements such as nickel, chromium, molybdenum, and niobium, and its chemical composition gives it excellent corrosion resistance and high temperature resistance. It is commonly used in marine environments, chemical industries, and aerospace.

Alloy 825: In addition to nickel, chromium, and molybdenum, alloy 825 also contains elements such as iron, copper, and titanium. It performs well in environments containing strong acids such as sulfuric acid and phosphoric acid, as well as oxidizing and reducing media. It is widely used in the chemical, oil and gas, and nuclear industries.