Heat Resistant Alloy Materials for Fasteners

HASTELLOY® alloy X (HX)   [(UNS N06002) Ni rem, Cr 20.5-23%, Fe 17-20%, Mo 8-10%] provides an optimum balance of strength, oxidation resistance, welding characteristics, and machinability at temperatures up to 2200° F. Particularly suitable for reducing and neutral atmospheres, and where ductility is required after prolonged service at elevated temperatures. Resists stress corrosion cracking in petrochemical applications. Used in gas turbine engine combustors, heat treating equipment, flame holders, furnace baffles, and aircraft and marine applications.

HAYNES® Alloy 25 (L605)   [(UNS R30605) Co rem(50%), Cr 19-21%, W 14-16%, Ni 9-11%, Fe 3%max, Mn 2%max]High strength; resists oxidation and carburization up to 1900° F. Resists wear, acids, and body fluids. Will resist hydrochloric acid and nitric acid at certain concentrations. Resists humid chlorine environments at room temperature. Widely used in gas turbine engine components, bearings, springs, marine environments, and heart valves.

HAYNES® Alloy 230  [(UNS N06230) Cr 20-24%, W 13-15%, Co max. 5%, Mo 1-3%, Mn 0.3-1%]Alloy 230 has excellent oxidation resistance, high temperature strength, good fabrication, and long term stability up to 2100 º F. 230 has excellent forming and welding characteristics. Commonly used for a variety of components in aerospace, chemical processing and power industry applications.

INCOLOY® Alloy 800  [(UNS N08800) Ni 30-35%, Cr 19-23%, Fe 39.5% min]This nickel-iron-chromium alloy has good strength in high temperature environments and excellent resistance to oxidation and carburization. It also resists corrosion in many aqueous environments. The low carbon content helps prevent sensitization and subsequent intergranular corrosion in the weld heat affected zone. Used in fume scrubbers and handling phosphoric and sulfuric acids.

INCOLOY® Alloy 800H & 800HT  [(UNS N08810 & UNS N08811)]Incoloy 800H and 800HT nickel-iron-chromium alloys are the same base alloy as Incoloy 800, but with significantly higher creep rupture strength. This is achieved by closely controlling the carbon, aluminum and titanium contents and by high temperature annealing. These alloys are used in chemical and petrochemical processing, power plants, industrial furnaces, and heat treatment equipment.

INCOLOY® alloy 825  [(UNS N08825) Ni 38-46%, Cr 19.5-23.5%, Fe 22% min, Mo 2.5-3.5%, Cu 1.5-3%] This is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to reducing and oxidizing acids, stress cracking, and localized corrosion such as pitting and crevice corrosion. Incoloy 825 is particularly resistant to sulfuric and phosphoric acids. It is commonly used in chemical processing, pollution control equipment, oil and gas well piping, nuclear processing, acid making, and pickling equipment.

INCONEL® Alloy 600  [(UNS N06600) Ni 72% min, Cr 14.0-17.0%, Fe 6.0-10.0%] is well suited for use in high temperature environments (up to 2150° F) where oxidation, reduction, and corrosion threats are present. It has excellent resistance due to its high nickel and chromium contents. Due to these properties, it is often specified for use in nuclear steam generator equipment, heat treatment equipment, and furnaces. It is also used in electronic components and chemical and food processing.

INCONEL® Alloy 601  [(UNS N06601) Ni 58.0-63.0%, Cr 21.0-25.0%, Al 1.0-1.7%, Fe balance] With the addition of aluminum, Inconel 601 has excellent resistance to oxidation and other forms of high temperature corrosion. It also has high mechanical properties at elevated temperatures. Used in industrial furnaces, heat treatment equipment such as baskets, muffles and retorts, petrochemical and other process equipment, and gas turbine components.

INCONEL® Alloy 617  [(UNS N06617) Ni 44.5% min, Cr 20.0-24.0%, Co 10-15%, Mo 8-10%, Fe 3% max]Inconel 617 is a nickel-chromium-cobalt-molybdenum alloy with excellent metallurgical stability, strength, and oxidation resistance at elevated temperatures. It exhibits corrosion resistance to a wide range of aqueous solutions. Commonly used in applications such as aircraft, piping, gas turbines, chemical processing, burner cans, and industrial furnace components.

INCONEL® Alloy 625   [(UNS N06625) Ni 61%, Cr 21.5%, Mo 9%, Nb+Ta 3.6%] maintains its strength and toughness over a wide range of operating temperatures from cryogenic to 1800° F. This nickel-chromium-molybdenum alloy has excellent fatigue strength, good oxidation resistance, and corrosion resistance. Used in nuclear reactors, ash pit seals, marine equipment, fuel nozzles, afterburners, and chemical and pollution control equipment.

INCONEL® Alloy 718   [(UNS N07718) Ni 52.5%, Cr 19%, Fe 18.5%, Mo 3.0%, Nb+Ta 3.6%] is suitable for use in temperatures from -423° F to 1300° F, with excellent oxidation resistance up to 1800° F. Used in jet engines, fuel elements, pump components, nuclear fuel elements, and hot extrusion applications.

INCONEL® Alloy X-750   [(UNS N07750) Ni+Co 70% min, Cr 14-17%, Fe 5-9%, Ti 2.25-2.75%] is similar to Inconel 600, but is precipitation hardened by the addition of aluminum and titanium. X750 has good corrosion and oxidation resistance and high tensile and creep-rupture properties at approximately 1300ºF. It has excellent relaxation resistance and is suitable for high temperature applications. Used in gas turbines, rocket engines, nuclear reactors, pressure vessels, tools and aircraft structures.

Kanthal-D ®  [(UNS ) Cr 22%, Al 4.8 %, Fe bal.]Kanthal-D has heat resistance up to 2370ºF. Due to its high resistivity, low density and excellent heat resistance, this alloy is suitable for appliances in most applications. Kanthal has excellent corrosion resistance in the hot state and has exceptional resistance to sulfur and carburizing environments.

NiChrome V  [(UNS N06003) Ni rem(80%), Cr 19-21%, Fe 1% max, Mn 2.5% max]This nickel-chromium alloy, also known as Nichrome 80-20, is well suited for resistors operating at high temperatures. Resistors are widely used due to the combination of high electrical resistance and low temperature coefficient of resistance. Commonly found in electric furnaces, radiant heaters, and other electrical industry applications.

Nichrome 60-16  [(UNS N06004) Ni 57% min, Cr 14-18%, Fe rem, Mn max 1%]60-16 is well suited for high operating temperatures up to 1950°F. This nickel-chromium alloy exhibits excellent corrosion resistance in both oxidizing and reducing atmospheres. Commonly used in electric heating, industrial resistance units, acid dip baskets, filter cloths, and other applications.

Nichrome 35-20  [(UNS N060??) Ni 34-37% min, Cr 18-21%, Fe rem, Mn max 1%]Nichrome 35-20 is well suited for high operating temperatures, exhibiting good strength up to about 1900°F. It is well suited for use in atmospheres contaminated with sulfur, lead, or zinc. More often used for mechanical purposes than for resistance purposes.