1. What are the key properties of Inconel 693 alloy sheets and plates?
Answer:
Inconel 693 (UNS N06693) is a nickel-chromium-molybdenum alloy designed for chemical processing. Its main properties include:
Excellent resistance to strong oxidizing and reducing agents, including nitric acid, ferric chloride, and organic acids
High strength and creep resistance at elevated temperatures (up to 1100°F / 593°C)
Superior corrosion and pitting resistance in harsh chemical environments
Good fabrication properties compared to other high-nickel alloys, allowing for forming and welding
2. What thicknesses and sizes are available for these nickel alloy sheets/plates?
Answer:
Thickness: Typically 0.5 mm to 50 mm depending on production
Width: 500 mm to 2000 mm
Length: Can be customized or cut-to-size based on project requirements
Both hot-rolled and cold-rolled options are available to meet precision tolerances and surface finish specifications
3. Can Inconel 693 sheets/plates be welded or machined?
Answer:
Welding: TIG and MIG welding are commonly used. Matching filler metals and proper post-weld heat treatment improve joint strength and reduce cracking.
Machining: Inconel 693 is tough and work-hardens during cutting. Carbide tooling, slow feed rates, and adequate coolant are recommended for accurate machining.
4. Which industries commonly use Inconel 693 sheets/plates?
Answer:
Chemical & Petrochemical: Reactors, piping, heat exchangers, and vessels handling nitric acid, ferric chloride, and strong oxidizers
Power Generation: Corrosion-resistant components in boilers and heat exchangers
Pharmaceutical & Food Processing: Equipment that requires chemical resistance and high purity
Marine & Offshore: Piping and components exposed to corrosive seawater or acidic environments
5. What certifications and quality standards are available for these sheets/plates?
Answer:
Material Certification: Mill Test Reports (MTRs) per ASTM B906 (sheet/plate) and ASTM B168 (bars and billets)
Testing: Chemical composition, mechanical properties, dimensional inspection, and optional NDT (ultrasonic or eddy current)
Standards Compliance: ASTM, ASME, ISO 9001, and NACE MR0175/ISO 15156 for sour environments
Project-specific certifications or additional testing can be provided on request
