| Alloy |
UNS NO. |
DIN/EN |
Commercial grades |
Basic introduction |
| Alloy600 |
UNS N06600 |
2.4816
NiCr15Fe8 |
Inconel600 |
Alloy600 is a nickel-chromium-iron-based solution strengthened alloy, which has good high temperature corrosion resistance and oxidation resistance, excellent cold and hot working and welding process performance, and satisfactory thermal strength and high plasticity below 700°C. The versatility of Alloy600 allows it to be used in a wide range of temperatures from cryogenic to 1095°C. Due to its high strength and corrosion resistance, the alloy is widely used in chemical applications, including heaters, distillers, blister towers and condensers in fatty acid processes, evaporator tubes, tube sheets and tablet plates in sodium sulfide manufacturing processes, rosin acid treatment equipment in pulp manufacturing, etc. The high-temperature strength and oxidation resistance of alloys make them used in many heat treatment industries. It is used in kettles, mafu, rolling furnace walls and other furnace components as well as in heat treatment blues and trays. In the aerospace sector, Alloy600 is used in a variety of engine and airframe components that withstand high temperatures. For example: lock wires, exhaust linings, and turbine seals. Alloy600 is used in the electronics industry such as cathode ray tube holders, thyristor grids, tube support diaphragms and springs. |
| Alloy601 |
UNS N06601 |
2.4851
NiCr23Fe15 |
Inconel601 |
Alloy601 has an outstanding feature that is its resistance to high-temperature oxidation. The alloy also has good resistance to aqueous corrosion and high mechanical strength, and can be easily formed, machined and welded. The compounds are face-centered cubic solid solutions and are highly metallurgically stable. The alloy is nickel-based and combined with a fixed chromium content to provide corrosion resistance to many corrosive media and resistance to high temperature environments. The aluminium content further strengthens the oxidation resistance. The properties of Alloy601 enable the material to be used in a wide range of applications, such as thermal processes, chemical processes, environmental protection, aviation and power generation. The use of Alloy601 in industrial heating includes annealing, carburizing, carbonitriding, nitriding and other baskets, trays and fixtures for heat treatment processes. In industrial furnaces, alloys are used to make radiant tubes, mauffs, heaters, flame protectors, wire annealing tubes, braided wire conveyor belts, chain curtains, burners, and electric heating elements. Other thermal applications include thermocouple protection tubes, furnace atmosphere generators, and infrared radiation screens. Chemical applications of Alloy601 include industrial heaters, condensation of acid-water separators, and insulated tanks for ammonia modification. The alloy is also used as combustion chamber components for jet engines and as catalytic carriages in nitric acid production equipment. In petrochemical engineering, alloys are used as catalytic regenerators and air preheaters in the production of high-density polyethylene. In the field of environmental protection, Alloy601 is used as a thermal reactor in the exhaust system of fuel engines and as a combustion chamber in solid waste incinerators. In the field of power generation, Alloy601 uses superheater tube supports, grid barriers and ash treatment systems. Alloys are also used as jet engine igniters and combustion chamber linings, diffusion aggregators, and as outer rings for gas turbines in aircraft, industry, and vehicles. |
| Alloy602CA |
UNS N06025 |
2.4633
NiCr25FeAlY |
Inconel602CA |
Alloy602CA is one of the most oxidation-resistant heat-resistant alloys available. The high chromium, alumina, and yttrium additions allow it to form a tight chromium oxide scale with an alumina subscale. Alloy602CA is suitable for use as an important factor in minimizing product contamination at extreme temperatures. The nominal carbon content of 0.2% helps to increase creep rupture strength. Microalloying with zirconium minimizes grain growth when exposed to temperatures above 900°C. |
| Alloy625 |
UNS N06625 |
2.4856
NiCr22Mo9Nb |
Inconel625 |
Alloy625 nickel-chromium alloy is widely used due to its high strength, excellent machinability (including welding) and excellent corrosion resistance. The properties of Alloy625 make it an excellent choice for local corrosion (pitting and crevice corrosion), high corrosion fatigue strength, high tensile strength and resistance to chloride stress corrosion cracking in seawater. It is used in cables for mooring ships, blades for thrusters of motor gunboats, auxiliary propulsion motors for submarines, quick-release couplings for submarines, exhaust pipes for naval vessels, protective jackets for cables for submarine communications, submarine sensor controllers, and expansion joints for steam pipelines. Potential applications include springs, seals, expansion joints for underwater control, cable glands, fasteners, flexible devices, and instrumentation components for oceanography. Alloy625 alloy’s high tensile, creep and breaking strength, excellent fatigue and thermal fatigue strength, oxidation resistance, and excellent welding and brazing properties make it also useful in the aerospace field. to duct systems for aircraft, engine exhaust systems, thrust conversion systems, weld-resistant hive structures in engine mounting structures, fuel and hydraulic system piping, injection rods, expansion joints, vortex cladding rings, and heat exchanger tubes in environmental control systems. It is also suitable for use in conversion linings of combustion sections, turbine seals and thrust chamber piping of compressors, blades and rocket engines. |
| Alloy725 |
UNS N07725 |
|
Inconel725 |
Alloy725 is a nickel-chromium-molybdenum-niobium alloy with strong corrosion resistance and aging resistance, with extremely high strength. It has essentially the same corrosion resistance as Alloy625. Age-hardening Alloy725 is twice as strong as annealed alloy 625. Since the strength of alloy 725 is formed by heat treatment rather than cold working, ductility and toughness are still high. The high content of nickel and chromium is corrosion resistant in both reducing and oxidizing environments. The high molybdenum content enhances resistance to reducing media and provides a high degree of resistance to pitting and crevice corrosion. In addition, the combination of elements allows the alloy to resist hydrogen embrittlement and stress corrosion cracking. The properties of Alloy725 are suitable for a range of applications that require excellent corrosion resistance and high strength. The alloy is used in hangers, landing joints, side pocket mandrels, and polished bore receptacles in sour gas applications and is resistant to the effects of hydrogen sulfide, chloride, and carbon dioxide. The alloy is also suitable for high-strength fasteners in marine applications because it resists corrosion, pitting, and crevice erosion in seawater. |
| Alloy686 |
UNS N06686 |
2.4606
NiCr21Mo16W |
Inconel686 |
Alloy686 is an austenitic nickel-chromium-molybdenum-tungsten alloy with excellent internal corrosion properties in harsh environments. Alloy686 has excellent corrosion resistance to seawater, fatigue resistance for use in marine use fasteners (bolts, nuts, bolts, etc.). |
| Alloy690 |
UNS N06690 |
2.4642
NiCr29Fe |
Inconel690 |
Alloy690 is a high chromium-nickel alloy that is high temperature and corrosion resistant. Alloy690 is mainly used in various applications of nitric acid or nitric/fluoric acid solutions. Examples are in the production of nitric acid and heating coils and tanks for pickling in stainless steel and nuclear fuel reprocessing with nitric/hydrofluoric acid solution tail gas reheaters. It is used for the treatment of sulfuric acid, furnace and petrochemical processing, heat exchanger, incinerator. For all types of high temperature water, Alloy690 shows low corrosion rate and excellent crack resistance to stress corrosion. Therefore, Alloy690 is widely used in steam generator tubes, baffles, header plates and hardware for nuclear power generation. |
| Alloy693 |
UNS N06693 |
|
Inconel693 |
Alloy693 is a nickel-based superalloy with excellent corrosion resistance and high temperature strength. It is commonly used to manufacture components that need to withstand high temperatures and corrosive environments, such as aerospace, energy, chemical industry, and other fields. |
| Alloy718 |
UNS N07718 |
2.4668
NiCr19Fe19Nb5Mo3 |
Inconel718 |
Alloy718 precipitation strengthened nickel-based superalloy has good comprehensive properties in the temperature range of -253~700 °C, and the yield strength below 650 °C ranks first among deformed superalloys, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, as well as good processing performance, welding performance and long-term microstructure stability, and can manufacture various parts with complex shapes, and has been widely used in the aerospace, nuclear energy, and petroleum industries in the above temperature ranges. Another feature of Alloy718 is that the alloy structure is particularly sensitive to the hot working process, and the relationship between phase precipitation and dissolution in the alloy and the relationship between the structure and the process and performance can be formulated according to different use requirements, and various parts that can meet different strength levels and use requirements can be obtained. It can be made into discs, rings, blades, shafts, fasteners and elastic elements, plate structural parts, casings and other parts for long-term use in aviation. |
| Alloy750 |
UNS N07750 |
2.4669
XCr15Fe7TiAl
NiCr15Fe7TiAl |
InconelX-750 |
Alloy750 is an age-strengthened nickel-based superalloy, which has good corrosion resistance and oxidation resistance below 980°C, high strength below 800°C, good relaxation resistance below 540°C, and good forming and welding properties. This alloy is mainly used in the manufacture of parts such as rings, structural parts and bolts that work below 800 °C for aero engines and require high strength and corrosion resistance, and plane springs and coil springs that work below 540 °C with medium or low stress and require relaxation resistance. It can also be used to make parts such as gas turbine turbine blades. |
| Alloy751 |
UNS N07751 |
|
Inconel751 |
Alloy751 is a nickel-chromium-iron-based solution strengthened alloy, which has good high temperature corrosion resistance and oxidation resistance, excellent cold and hot working and welding properties, and satisfactory thermal strength and high plasticity below 700°C. The alloy can be strengthened by cold working, or it can be joined by resistance welding, fusion welding or brazing, and is suitable for making oxidation-resistant parts that can withstand low loads below 1100°C. Alloy751 is mainly used in thermowells in aggressive atmospheres, vinyl chloride monomer production: resistant to chlorine, hydrogen chloride, Oxidation and carbonization corrosion, uranium oxidation to hexafluoride, production and use of corrosive alkali metals, especially in environments where sulfides are used, production of titanium dioxide from chlorine gas, production of organic or inorganic chlorides and fluorides: resistance to chlorine and fluorine corrosion, nuclear reactors, crank flasks and components in heat treatment furnaces, especially in carbonization and nitriding atmospheres, catalytic regenerators in petrochemical production Alloy 600H is recommended for long service life in applications above 700°C. |
| Alloy740 |
UNS N07740 |
|
Inconel740 |
Alloy740 is a nickel-chromium-cobalt alloy. It has high strength and high corrosion resistance. It is mainly used for boiler tubes and diesel exhaust valves in power production, as well as halogen corrosion in high-temperature environments |
| Alloy617 |
UNS N06617 |
2.4663
NiCr23Co12Mo |
Inconel617 |
Alloy617 is a solid solution, reinforced nickel-chromium-cobalt-molybdenum alloy with excellent comprehensive high-temperature strength and oxidation resistance, corrosion resistance and high-temperature oxidation resistance in various reducing and oxidizing environments. Alloy617 is very attractive for use as ducts, combustion tanks and conversion liners in aircraft and land-based gas turbines. Alloy617 is used in catalytic grid support in nitric acid production, hanging blue in heat treatment, and concentration disc in molybdenum refining. Alloy617 is also used in components for fuel oil and nuclear power applications. |
| Alloy783 |
UNS R30783 |
|
Inconel783 |
Alloy783 is a Co-Ni-Fe-based precipitation-hardening ferromagnetic superalloy with oxidation resistance and low thermal expansion coefficient, which has excellent room temperature, high temperature mechanical properties, low thermal expansion coefficient and low density. It has excellent hot working properties and cold forming process properties. Alloy783 is used in the manufacture of gap control components such as sealing rings, load-bearing rings and receivers for advanced aero engines. Alloy783 is also used in fasteners such as bolts and load-bearing shafts used in medium- and high-temperature service such as ground gas turbines, as well as in the air ducts of rocket engines. |
