Premium Nickel-Chromium Alloy Flanges for Extreme High-Temperature and Corrosive Environments
MicroTech Stainless Steel Co. manufactures and supplies high-quality Inconel Flanges engineered to deliver exceptional performance in the most demanding high-temperature and corrosive environments. Inconel alloys are premium nickel-chromium-based superalloys renowned for their outstanding strength retention at elevated temperatures, superior oxidation resistance, and excellent resistance to corrosion and creep deformation.
Our comprehensive range includes Inconel 600, 625, 718, and 800/800H/800HT grades, each specifically formulated to excel in different operating conditions. Inconel 600 provides excellent resistance to oxidation and chloride stress corrosion cracking. Inconel 625 offers superior corrosion resistance combined with high strength. Inconel 718 delivers exceptional strength up to 1300°F (700°C) with excellent weldability. Inconel 800/800H/800HT series provides outstanding creep and rupture strength for extended high-temperature service.
Manufactured to stringent international standards including ASME B16.5, B16.47, ASTM B564, and MSS SP-44, our Inconel flanges undergo comprehensive quality control testing. Each flange is subjected to chemical analysis, mechanical property verification, non-destructive testing, and dimensional inspection to ensure complete compliance with specifications and customer requirements.
With proven performance in aerospace propulsion systems, gas turbine engines, nuclear reactors, chemical processing plants, and petrochemical facilities, Inconel flanges represent the ultimate solution for applications where conventional materials fail. Their unique combination of high-temperature strength, oxidation resistance, and corrosion resistance makes them indispensable in critical industries where reliability and safety are paramount.
Maintains excellent mechanical properties and structural stability at temperatures up to 2000°F (1095°C). Inconel 718 offers outstanding strength up to 1300°F, while 800H/HT provides superior creep resistance for long-term service at elevated temperatures in heat treating and petrochemical applications.
Forms a protective oxide layer that provides outstanding resistance to oxidation and scaling at high temperatures. Inconel alloys maintain surface integrity in oxidizing atmospheres where other materials rapidly deteriorate, making them ideal for furnace components and gas turbine applications.
Excellent resistance to a wide range of corrosive media including acids, alkalis, and salt solutions. Inconel 625 provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in seawater and chloride environments. Inconel 600 offers outstanding resistance to chloride-induced SCC.
Outstanding resistance to creep deformation and stress rupture at elevated temperatures. Inconel 800H and 800HT grades specifically engineered with controlled carbon and grain size for maximum creep-rupture strength in long-term high-temperature service applications up to 1500°F.
Excellent resistance to thermal cycling and thermal shock conditions. The combination of high-temperature strength, low thermal expansion, and good thermal conductivity makes Inconel ideal for applications involving repeated heating and cooling cycles in gas turbines and aerospace systems.
Superior resistance to carburization and other forms of surface degradation in high-temperature carbonaceous environments. Inconel 600 and 800 series alloys maintain surface integrity in petrochemical cracking, ethylene production, and heat treating operations where carbon pickup is a concern.
Can be readily welded using conventional techniques including GTAW, GMAW, SMAW, and SAW processes. Inconel 625 and 718 provide excellent weldability without hot cracking concerns. Post-weld heat treatment may be required for certain grades to optimize properties and stress relief.
Maintains mechanical properties and structural integrity under neutron radiation exposure. Inconel 600 and 718 are widely used in nuclear reactor components, control rod mechanisms, and reactor vessel internals where radiation resistance and high-temperature performance are essential.
Certain Inconel grades maintain excellent toughness and ductility at cryogenic temperatures. Inconel 718 retains good mechanical properties down to -423°F (-253°C), making it suitable for cryogenic storage and handling systems in aerospace and liquefied gas applications.
Manufactured from certified mill test certificate material with complete traceability from heat number to final product. Comprehensive testing including PMI verification, mechanical testing, and corrosion testing ensures compliance with aerospace, nuclear, and chemical processing industry specifications.
Gas turbine engines, jet engine components, exhaust systems, afterburner parts, and thrust reversers. Inconel 625 and 718 are essential materials for turbine blades, discs, combustion chambers, and exhaust manifolds requiring high strength at elevated temperatures with oxidation resistance.
Industrial gas turbines, transition pieces, combustion liners, turbine wheels, and hot gas path components. Inconel 718 provides the strength and creep resistance needed for rotating components, while 625 excels in combustion zones with oxidizing atmospheres.
Reactor vessel internals, control rod drive mechanisms, steam generator tubing, and nuclear fuel reprocessing equipment. Inconel 600 and 718 offer the radiation resistance, corrosion resistance, and high-temperature strength required for nuclear reactor primary and secondary systems.
Reactors, heat exchangers, piping systems for corrosive chemicals, nitric acid production, and organic chloride processing. Inconel 625 provides exceptional corrosion resistance in acidic chloride environments, while 600 excels in high-temperature caustic solutions.
Furnace components, muffles, retorts, radiant tubes, and fixtures for carburizing, nitriding, and annealing operations. Inconel 800/800H/800HT series provides superior creep strength and carburization resistance for long-term service in high-temperature heat treating atmospheres.
Ethylene pyrolysis furnaces, catalytic reforming units, hydrocracking reactors, and delayed coking units. Inconel 800H/HT offers outstanding resistance to carburization, oxidation, and thermal fatigue in high-temperature hydrocarbon processing environments.
Desulfurization systems, selective catalytic reduction (SCR) units, and industrial incinerators. Inconel 625 withstands acidic condensates and oxidizing conditions in flue gas cleaning operations, while maintaining strength in thermal cycling conditions.
Glass melting furnaces, metal heat treating, ceramic firing kilns, and waste incineration. Inconel's oxidation resistance and high-temperature strength make it ideal for furnace rolls, kiln furniture, and other components exposed to extreme temperatures and oxidizing atmospheres.
Best for: Chloride stress corrosion cracking resistance, high-temperature oxidation, thermal processing, nuclear applications.
Key Properties: Outstanding resistance to oxidation up to 2150°F (1175°C). Excellent resistance to chloride-induced stress corrosion cracking in high-temperature water and steam. High nickel content (72%) provides immunity to chloride SCC that affects austenitic stainless steels. Good resistance to aqueous corrosion.
Temperature Range: Continuous service up to 2000°F (1095°C) in oxidizing atmospheres. Maintains strength and ductility from cryogenic temperatures to elevated temperatures.
Typical Applications: Nuclear reactor core components, heat treating fixtures, furnace muffles, chemical processing equipment handling chlorides, thermal processing equipment, gas turbine exhaust systems.
Best for: Combination of high strength and outstanding corrosion resistance, seawater applications, acidic environments, cryogenic to elevated temperatures.
Key Properties: Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. High molybdenum (8-10%) and niobium content provides resistance to localized corrosion. Excellent strength from cryogenic temperatures to 1800°F (980°C). Outstanding weldability without post-weld heat treatment.
Temperature Range: Maintains properties from -423°F (-253°C) to 1800°F (980°C). Excellent oxidation resistance up to 1800°F for intermittent service.
Typical Applications: Aerospace exhaust systems, chemical processing equipment, seawater applications, marine engineering, pollution control, nuclear fuel reprocessing, sour gas production.
Best for: Maximum strength at elevated temperatures up to 1300°F, aerospace applications, gas turbine components, cryogenic applications.
Key Properties: Age-hardenable alloy providing tensile strength exceeding 200 ksi through precipitation hardening heat treatment. Excellent strength retention up to 1300°F (700°C). Outstanding fatigue resistance and creep-rupture properties. Good weldability with proper procedures. Maintains toughness at cryogenic temperatures.
Temperature Range: Optimum strength from cryogenic temperatures to 1300°F (700°C). Can be used up to 1200°F (650°C) for long-term service.
Typical Applications: Gas turbine discs and blades, rocket motors and thrust reversers, nuclear reactor components, cryogenic tankage, high-strength fasteners, aerospace structural components, oil and gas wellhead equipment.
Best for: Extended high-temperature service requiring creep-rupture strength, carburizing and nitriding atmospheres, petrochemical furnaces, heat exchangers.
Key Properties: Outstanding resistance to creep and stress rupture at elevated temperatures. Excellent resistance to carburization, oxidation, and nitridation. 800H features controlled carbon (0.05-0.10%) and grain size for optimum creep strength. 800HT has higher aluminum and titanium for enhanced creep properties. Good resistance to aqueous corrosion.
Temperature Range: 800: up to 1500°F (815°C); 800H/HT: up to 1650°F (900°C) for extended service with excellent creep-rupture strength. Maintains properties down to cryogenic temperatures.
Typical Applications: Ethylene pyrolysis furnaces, heat exchanger tubing, steam superheater tubes, petrochemical processing equipment, heat treating equipment, power plant superheaters, nitric acid production, nuclear steam generators.
Choose Inconel 600 when chloride SCC resistance and oxidation resistance are primary concerns, especially in nuclear and thermal processing applications.
Choose Inconel 625 for the best combination of corrosion resistance and strength across a wide temperature range, particularly in seawater, acidic environments, and aerospace applications.
Choose Inconel 718 when maximum strength is required at temperatures up to 1300°F, particularly in aerospace, gas turbines, and applications requiring precipitation hardening.
Choose Inconel 800/800H/800HT for long-term high-temperature service requiring creep-rupture strength and resistance to carburizing/oxidizing atmospheres in petrochemical and heat treating applications.