1. What are the main properties of Inconel 625 sheets?
Answer:
Inconel 625 is a nickel-chromium-molybdenum alloy known for:
Excellent corrosion and oxidation resistance, including in harsh chemical environments
High strength and toughness at both ambient and elevated temperatures (up to 980°F / 525°C)
Wear and erosion resistance, making it ideal for chemical process equipment and piping
Resistance to pitting, crevice corrosion, and stress-corrosion cracking
2. What thicknesses and dimensions are available for Inconel 625 sheets?
Answer:
Thickness: Typically ranges from 0.5 mm to 50 mm, depending on production methods
Width: Usually 500 mm to 2000 mm
Length: Can be customized or cut-to-size as per customer requirements
Cold-rolled and hot-rolled options are available for different surface finishes and tolerances
3. Can Inconel 625 sheets be welded or machined?
Answer:
Welding: TIG, MIG, and electron beam welding are recommended. Using matching filler metals and proper post-weld treatment helps prevent cracking.
Machining: The alloy work-hardens quickly. Carbide tools, low feed rates, and sufficient coolant are required for effective cutting and forming.
4. What industries commonly use Inconel 625 sheets in the chemical process sector?
Answer:
Chemical & Petrochemical: Reactors, heat exchangers, piping systems, and valves exposed to acids, chlorides, and high temperatures
Marine & Offshore: Equipment exposed to seawater corrosion
Power Generation: High-temperature heat exchangers and turbine components
Pharmaceutical & Food Processing: Corrosion-resistant tanks and processing equipment
Its combination of anti-corrosion and wear-resistant properties makes it ideal for extreme environments.
5. What certifications and quality standards are available for Inconel 625 sheets?
Answer:
Material Certification: Mill Test Reports (MTRs) compliant with ASTM B444/B443 and UNS N06625
Testing: Dimensional inspection, chemical analysis, mechanical testing, and optional NDT (ultrasonic or eddy current)
Standards Compliance: ASTM, ASME SB444, ISO 9001, and NACE MR0175/ISO 15156 for sour environments
Custom certifications for specific projects can usually be provided on request
