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Everything You Need to Know About Inconel 600/601/625/718 Flanges – Properties, Benefits, and Applications

In the demanding world of industrial piping, heat exchangers, and chemical processing, the right materials make all the difference. That’s where Inconel 600/601/625/718 Flanges come into play. At Sandvik, we specialize in delivering high-performance, corrosion-resistant flanges designed to perform in extreme environments. These nickel-based alloy flanges are a preferred choice across various sectors for their unmatched durability, strength, and resistance to oxidation and corrosion.

Inconel 600/601/625/718 Flanges Manufacturers like Sandvik produce these specialized flanges using advanced technology and premium-grade raw materials. Each grade—600, 601, 625, and 718—offers distinct properties, making them ideal for different industrial applications. Inconel 600 provides excellent resistance to high-temperature oxidation, while 601 offers enhanced performance in thermal and corrosive conditions. Inconel 625 is known for its superior fatigue strength and weldability, and Inconel 718 stands out for its exceptional tensile strength and creep resistance.

So, what exactly are Inconel 600/601/625/718 Flanges? These are flange fittings made from various Inconel alloys used to connect pipes, valves, pumps, and other equipment to form a piping system. Their primary function is to provide strength and structural integrity in high-pressure, high-temperature, and corrosive environments. The robust mechanical properties of Inconel flanges make them suitable for both high-stress and low-cycle fatigue applications.

One of the major advantages of using these flanges is their excellent resistance to a wide range of corrosive elements including acids, seawater, and other aggressive chemicals. This makes them incredibly reliable in environments where other metals would fail. They also maintain their structural strength at elevated temperatures, reducing the risk of failure during long-term exposure to heat. Another benefit is their exceptional fatigue resistance, ensuring long operational life with minimal maintenance. Leading Inconel 600/601/625/718 Flanges Suppliers understand the importance of these properties and ensure strict quality controls throughout the production process.

These flanges find widespread applications across a diverse range of industries. In the aerospace industry, Inconel 718 flanges are commonly used in jet engines and turbine blades. Inconel 625 is preferred in marine engineering for its resistance to seawater corrosion. Chemical processing plants favor Inconel 600 and 601 for their ability to resist oxidation and carburization. Power plants, nuclear reactors, and heat exchangers are other major consumers of Inconel flanges due to their long-term thermal performance. Reliable Inconel 600/601/625/718 Flanges Stockists like Sandvik ensure ready availability to meet critical industrial timelines.

There are several types of Inconel flanges available, each suited for specific uses. Weld Neck Flanges offer superior stress distribution and are ideal for high-pressure environments. Slip-On Flanges are easy to install and perfect for low-pressure systems. Socket Weld Flanges provide a strong connection for smaller pipes. Blind Flanges are used to seal off pipe ends. Threaded Flanges allow quick assembly without welding, useful in low-pressure scenarios. And Lap Joint Flanges are preferred in systems requiring frequent disassembly. As one of the experienced Inconel 600/601/625/718 Flanges Exporters, Sandvik provides all these varieties with full compliance to international standards.

In conclusion, Inconel 600/601/625/718 flanges are engineered to meet the toughest industrial demands. Whether you're dealing with corrosive chemicals, high temperatures, or extreme pressure, these flanges provide a long-lasting solution. Trust Sandvik to deliver quality, performance, and reliability in every piece we manufacture and supply. With global reach and a commitment to excellence, we’re your trusted partner for high-grade Inconel flange solutions.

Specification of Inconel 600/601/625/718 Flanges

Inconel Flanges Specification : ASTM B564 / ASME SB564
Dimension Standard : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN Flanges : DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.
JIS Flanges : JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K
BS Flanges : BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Equivalent Grades of Inconel 600/601/625/718 Flanges

STANDARD UNS WERKSTOFF NR. AFNOR GOST OR BS JIS EN
Inconel 600 N06600 2.4816 NC15FE11M МНЖМц 28-2,5-1,5 ЭИ868 NA 13 NCF 600 NiCr15Fe
Inconel 601 N06601 2.4851 NC23FeA XH60BT ЭИ868 NA 49 NCF 601 NiCr23Fe
Inconel 625 N06625 2.4856 NC22DNB4M ХН75МБТЮ ЭИ602 NA 21 NCF 625 NiCr22Mo9Nb
Inconel 718 N07718 2.4668 - - - - NCF 718 -

Chemical Composition of Inconel 600/601/625/718 Flanges

Grade Ni Fe C Mn Si Cu Cr S Mo Co Al Ti Nb
600 72.0 min 6.0 - 10.0 0.15 max 1.0 max 0.5 max 0.5 max 14.0 - 17.0 0.015 max - - - - -
601 58.0 – 63.0 Balance 0.10 max 1.0 max 0.50 max 1.0 max 21.0 – 25.0 0.015 max 8.0-10.0 - 1.0 – 1.7 - -
625 58.0 max 5.0 max .10 max .50 max .50 max - 20.0 - 23.0 .015 max 8.0 - 10.0 1.0 max .40 max .40 max 3.15 - 4.15
718 50 - 55 - 0.08 max 0.35 max 0.35 max 0.3 max 17 - 21 .015 max 2.8 - 3.3 1.0 max - - -

Mechanical Properties of Inconel 600/601/625/718 Flanges

Grade Tensile (psi) .2% Yield (psi) Elongation (%)
600 95,000 45,000 40
601 80,000 30,000 35