New Innovation N08825/2.4858/ASTM B425 Nickel Based Alloy Seamless Pipe for Chemical Process Incoloy 825 Tube

• Customization: Available
• Product Type: Ball
• Material: SiMn
• Model NO.: Incoloy 825 Tube/Pipe
• Carbon Content: Low Carbon
• PCD: 100mm
• ET: 15mm
• Hole: 4
• Key Words: Incoloy 825 Tube/Pipe
• Thickness: 3mm - 150.0mm
• Width: 1000mm - 3000mm
• Length: as Your Requirments
• Diameter Tolerance: H9, H11, H13, K9, K11, K13 etc
• Sample: Free-Sample
• Surface: Lack, Peeled, Polishing, Bright, Sand Blast, Hl
• MOQ: 100kgs
• Stock: in Stock
• Transport Package: Wooden Package
• Specification: Incoloy 825
• Trademark: LORK
• Origin: China
• HS Code: 7219350000
• Production Capacity: 50000kg/Month
• Package Size: 100.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 50.000kg

Product Description

Product Description

Introduction

In the oil and gas industry, the two most important nickel alloys are Inconel 625 and Incoloy 825. lncoloy 825 is an austenitic nickel-iron-chromium-molybdenum-copper alloy containing high levels of chromium, nickel, copper and molybdenum to provide high levels of corrosion resistance to both moderately oxidizing and moderately reducing environments. This balance of alloying elements grants this alloy exceptional resistance to both chloride stress corrosion cracking, as well as crevice corrosion and general corrosion. It is the high level of nickel in combination with the amount of molybdenum and copper in this nickel alloy produces substantially improved corrosion resistance in a corrosive environment such as reducing environments compared to stainless steel. The addition of titanium in this alloy also helps to stabilize the alloy against intergranular corrosion. Chloride stress corrosion cracking is a type of localised intergranular corrosion on materials that are put under tensile strength, in high temperatures and in an environment that includes oxygen and chloride ions such as seawater.

As an austenitic, nickel alloy, the material is ductile over a wide range of temperatures from cryogenic to well in excess of 1000 °F (538 °C). Fabricability is typical for a nickel alloy, with the material readily formable and weldable by a variety of techniques.

Composition
Chemical composition of Incoloy Alloy 825 (ASTM B163 - Heat exchanger tube)

Element	%
Nickel	35.0-46.0
Chromium	19.5-23.5
Molybdenum	2.5-3.5
Copper	1.5-3.0
Titanium	0.6-1.2
Iron	22.0min(~33%)
Carbon	0.05max
Manganese	1.0%
Sulfur	0.03max
Silicon	0.5max
Aluminium	0.2max

 

Grade Specification

Grade	UNS	DIN	EN	AMS	ASTM		GB
Incoloy 825	N08825	NiCr21Mo	Nr 2.4858		ASTM B425		BS NA16

Characteristic

Corrosion Resistance
The outstanding property of Incoloy 825 is its corrosion resistance. In reducing & oxidising conditions, Incoloy 825 resists general corrosion, pitting & crevice corrosion, intergranular corrosion and stress corrosion cracking. It is particularly useful in sulphuric & phosphoric acids, sulphur containing flue gases, sour gas and oil wells and sea water.

Pitting Resistance
The chromium and molybdenum content of Incoloy® alloy 825 provides a high level of resistance to chloride pitting. For this reason the alloy can be utilized in high chloride environments such as seawater. It can be used primarily in applications where some pitting can be tolerated. It is superior to conventional stainless steels such as 316L, however, in seawater applications Incoloy® alloy 825 does not provide the same levels of resistance as SSC-6MO (UNS N08367) or Alloy 625 (UNS N06625).
 

Properties of Incoloy Alloy 825

Form	Condition	0.2% Proof Stress MPa	Tensile Strength MPa	Elong %
Tube	Annealed	440	770	35
Tube	Cold drawn	880	1000	15
Bar	Annealed	325	690	45
Plate	Annealed	340	660	45
Sheet	Annealed	420	760	39

 

Processing method

Fabrication

Incoloy 825 can be readily hot or cold worked. Hot working should be in the range 870 - 1180°C, finishing at 870 - 980°C. For maximum corrosion resistance hot worked parts should be stabilise annealed before use. The alloy is easier to cold form than stainless steels.

Machinability
Incoloy 825 is classed as a 'C' alloy, and is reasonably easy to machine.

Welding
The alloy is readily weldable by the normal processes (GMAW (MIG), GTAW (TIG), SMAW (manual), SAW). The joint must be clean to avoid contamination of the weld pool.

Heat Treatment
Incoloy 825 is stabilise annealed at 940°C. The softest structure is obtained at 980°C. Sections heavier than sheet, strip and wire should be quenched to avoid sensitisation.
Please consult Austral Wright Metals for specific advice on your application.

Incoloy 825 Standards

Rod, Bar, Wire and Forging Stock	Plate, Sheet and Strip	Pipe & Tube
ASTM B425 ASTM B564	ASTM B424 ASTM B906	ASTM B163 ASTM B423 ASTM B704 ASTM B705 ASTM B751 ASTM B775 ASTM B829

Applications

• Chemical processing
• Pollution control
• Calorifiers
• Oil and gas recovery
• Hot vessels for food, water, and seawater
• Acid production
• Pickling tank heaters, tanks, and equipment
• Nuclear fuel reprocessing
• Radioactive waste handling
• Marine exhaust systems

 

Processing

 

Packaging & Shipping

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