Incoloy 330 Nickel Alloy Plate

Product Introduction

Incoloy 330 is a solution-strengthened austenitic nickel-iron-chromium alloy. It features excellent high-temperature oxidation resistance (up to 1150°C), superior resistance to carburization/sulfurization, good high-temperature strength, and corrosion resistance. They are generally categorised into medium-thick plates (common thickness ≥3.0mm) and wide-thick plates (≥20mm). Key standards for this type of alloy plate include: ASTM B536/B536M, and the general national standard GB/T 2054-2023. 

Its typical applications include:

Heat Treatment Equipment: Carburizing retorts, carbonitriding trays, muffles, radiant tubes, quenching devices

Petrochemical Industry: Cracking furnace tubes, high-temperature heat exchanger components, reformer tube hangers

Industrial Combustion Systems: Combustion chamber liners, high-temperature air ducts, flare tips

Glass Manufacturing: Furnace components, crucibles, conveyor rollers

Nuclear Power: Certain high-temperature components in auxiliary systems

Practical Guide to Market Procurement

• Supplier Selection: Prioritise traders with vacuum induction melting (VIM) or electroslag remelting (ESR) capabilities, relevant certifications, and mature supply chain management (ISO, CE, AS, etc.).

• Cost and Delivery Time: Prices are significantly affected by the prices of raw materials such as nickel and chromium. Heavy plates or special specifications are more expensive and have longer production cycles (ranging from several weeks to several months) due to complex processes (high rolling difficulty and the need for large equipment), requiring planning.

• Key Points for Inquiry and Contract:

Clear Requirements: Provide the grade, standard, specification, condition, quantity, and any special requirements.

Identify Standards: The contract must specify the exact standard number, such as "Applicable Standard: ASTM B536".

Define Testing: Clearly stipulate the UT testing level and whether third-party witnessing is required for acceptance.

Risk Mitigation: Be wary of quotations significantly below market price, which may indicate non-standard components or omission of crucial solution treatment. Always verify and confirm the original manufacturer's warranty certificate.

Manufacturing Process and Challenges

Alloy 330 has good cold and hot workability (but fast work hardening) and excellent weldability. Whether purchasing raw materials, machining simple parts, or precision-machined parts, the following points should be noted by skilled machining personnel regarding secondary processing:

1. Melting and Casting - Purity is Key
2. Hot Rolling - Precise Temperature Control Ensures Optimal Microstructure
3. Solution Heat Treatment - An Indispensable Process Step
4. Welding - A Mature Process; Welding *After* Solution Treatment is Recommended
5. Pre-oxidation Treatment - "Activation" for New Components Prior to Furnace Entry
Before loading 330 alloy components into the furnace, they *must* first undergo a "bake-out" - a two-day exposure to air at 980°C. Once this step is completed and a robust oxide film has formed, the components are equipped to withstand subsequent operating conditions. Many customers are unaware of this requirement; they take the components and load them directly into the furnace for use, resulting in a service life that is several times shorter than expected.
6. Cold Working - Beware of Work Hardening

For more information, please contact:

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

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Why Choose Lork Group?

Lork Group: Key Verification Points for Incoloy 330 Alloy Quality

Material Test Certificate (MTC) - including chemical composition, mechanical properties, and heat treatment records

Non-Destructive Testing (NDT) Report - including Ultrasonic Testing (UT) acceptance criteria (e.g., ASTM A578 Class B/C)

Heat Treatment Records - including solution annealing temperature, holding time, and cooling method

Third-Party Inspection Report - re-testing may be requested for critical applications

On-Site Verification:

Verification of Material Marking - check for "N08330" stamping (please specify if required)

Spectrographic Analysis (PMI) - verification of Nickel, Chromium, and Silicon content

Dimensional Inspection - verification of thickness tolerance and straightness

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