Incoloy 926 Nickel Alloy Pipe (UNS N08926,DIN 25-6Mo,W.Nr 1.4529)

Product Introduction

Incoloy 926 nickel alloy pipes are known for their top-notch resistance to chloride ion corrosion, excellent resistance to stress corrosion cracking, high strength, good plasticity, and good weldability.

You can think of it as follows: In applications where ordinary super austenitic stainless steels (such as 904L) are inadequate, and pure nickel-based alloys (such as 625) are too expensive, alloy 926 offers the best cost-effective solution against pitting and crevice corrosion. Its core applications are flue gas desulfurization (FGD) systems, seawater cooling, and high-chloride, acidic environments in chemical processes.

Procurement Specifications and Industry Standards

Based on our experience reviewing customer order details, a professional Incoloy 926 nickel alloy pipe inquiry must include the following information:

1. Required Material Standards and Grades:

General Standards: ASTM B423 / ASME SB423 (Common standard for seamless and welded pipes). Unified Grade: UNS N08926.

2. Specifications and Delivery Conditions:

Common Specifications:
Outside diameter: 6mm - 1219mm
Thickness: 0.5mm - 100mm
Outside diameter (OD) and tolerances (e.g., +/- 0.1mm).

Wall thickness (WT) and tolerances (e.g., +/- 10%).

(Custom sizes are available)
Delivery Conditions: Must specify "Solution Annealed".

3. Special Requirements (Additional as needed, affecting price):

Surface Requirements: Alloy 926 nickel alloy inner and outer surfaces can be pickled and passivated, or bright annealed. For FGD systems, the smoothness of the inner wall is critical.

Non-destructive Testing: 100% eddy current testing (ET) or ultrasonic testing (UT) to ensure Alloy 926 is defect-free.

Intergranular Corrosion Testing: Testing and reporting according to ASTM A262 Practice E (Streicher Test) or Practice C (Huey Test) are required to verify the intergranular corrosion resistance of Alloy 926.

End Treatment and Packaging: Protective sleeves are added to the Alloy 926 tube ends for moisture-proof packaging.

Price Drivers:

Molybdenum and Nickel Surcharges: Prices are heavily influenced by futures prices for metals such as molybdenum and nickel, fluctuating monthly.

Specification Precision: Thin-walled, small-diameter pipes, and high surface finish requirements significantly increase costs.

Testing Requirements: Additional corrosion tests (such as CPT testing) will increase costs.

Processing difficulty and key points

(Understanding pricing and delivery time)

Incoloy 926 nickel alloy pipe is a medium-difficulty material to machine, requiring specialized tools and adequate cooling. Whether purchasing raw materials, machining simple parts, or precision-machined parts, the following points should be noted by skilled machining personnel regarding secondary processing:

Solution treatment is crucial: Alloy 926 must undergo proper solution treatment (typically water quenching at 1150-1200°C). Focus on evaluating the capabilities of manufacturing suppliers in this area.

It exhibits good cold-forming properties, as it can be cold-bent and expanded; however, it has significant springback, which requires experience.

Welding requires matching materials: compatible high-molybdenum welding consumables (such as Alloy 625 welding wire/electrode) must be used, and the welding must be performed by qualified welders using certified welding procedures.

For more information, please contact:

 Email: susan@lorkgroup.com
 WhatsApp: +86 19937075488

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