ALLOY 718: Properties and Performance

Hangnie Super Alloys Co., Ltd. is a company that specializes in the supply of rare and exotic Nickel Alloys and Stainless Steels in most product forms including: SHEET, PLATE, BAR, FORGINGS, TUBE, PIPE AND FITTINGS. Nickel Alloys and Stainless Steels are materials that have high strength, corrosion resistance, and temperature resistance, which make them suitable for various applications in aerospace, oil and gas, chemical, power, and other industries.

ALLOY 718 is one of the products that Hangnie Super Alloys offers to its customers. ALLOY 718 is a precipitation-hardenable nickel-chromium alloy that contains significant amounts of iron, columbium, and molybdenum, along with lesser amounts of aluminum and titanium. ALLOY 718 has the following features:

•  ALLOY 718 has excellent mechanical properties at high and low temperatures, such as high tensile, fatigue, creep, and rupture strength. It can withstand temperatures up to 1300°F (704°C) and cryogenic temperatures down to -423°F (-253°C).

•  ALLOY 718 has outstanding corrosion resistance to various environments, such as pitting, crevice, intergranular, and stress corrosion cracking. It can resist oxidation, sulfidation, and carburization, as well as chloride, fluoride, and nitric acid solutions.

•  ALLOY 718 has good weldability and formability, which means it can be easily fabricated and joined by various methods, such as welding, brazing, forging, rolling, bending, and machining. It can also be hardened by heat treatment or cold working.

ALLOY 718 is available in various product forms, such as pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. ALLOY 718 is designated at UNS N07718, UNS N07719, and Werkstoff Nr. 2.4668. It is listed in NACE MR-01-75 for oil and gas service. ALLOY 718 meets various standards and specifications, such as ASTM, ASME, SAE, AECMA, ISO, and DIN, which are listed below:

•  Rod, Bar, Wire and Forging Stock: ASTM B 637, ASME SB 637, SAE AMS 5662, SAE AMS 5663, SAE AMS 5664, SAE AMS 5832, SAE AMS 5914, SAE AMS 5962, ASME Code Case 1993, ASME Code Case 2206, ASME Code Case 2222, AECMA PrEN 2404, AECMA PrEN 2405, AECMA PrEN 2952, AECMA PrEN 2961, AECMA PrEN 3219, AECMA PrEN 3666, ISO 9723, ISO 9724, ISO 9725, DIN 17752-17754

•  Plate, Sheet and Strip: ASTM B 670, ASTM B 906, ASME SB 670, ASME SB 906, SAE AMS 5596, SAE AMS 5597, SAE AMS 5950, AECMA PrEN 2407, AECMA PrEN 2408, ISO 6208, DIN 17750

•  Pipe and Tube: SAE AMS 5589, SAE AMS 5590, ASME Code Case N-253, DIN 17751

•  Welding Product: INCONEL Filler Metal 718 – AWS 5.14 / ERNiFeCr-2

•  Others: ASME Code Case N-62, ASME Code Case N-208, DIN 17744

Product Application and Maintenance

ALLOY 718 is widely used for various applications that require high strength, corrosion resistance, and temperature resistance. Some examples of these applications are:

•  Aerospace: jet engine components, rocket motors, spacecraft parts, landing gear parts, airframe parts, etc.

•  Oil and gas: wellhead and Christmas tree components, subsea valves and fittings, gas turbine parts, drilling and production tools, etc.

•  Chemical: reactors, heat exchangers, pumps, valves, piping, etc.

•  Power: nuclear fuel elements, steam generator tubes, turbine blades, etc.

•  Others: springs, fasteners, instrumentation, medical devices, etc.

ALLOY 718 is easy to maintain, but it requires some precautions and instructions to ensure its proper functioning and safety. Here are some tips to follow:

•  Before installation, check the product for any damage or defect, and make sure it meets the required dimensions and specifications. If you find any problem, contact the supplier or manufacturer for replacement or repair.

•  During installation, follow the instruction manual and the applicable codes and standards. Use the appropriate tools and equipment, and apply the proper torque and tension. Do not overheat or overcool the product, as it may affect its properties and performance.

•  After installation, test the product and the system for any malfunction or abnormality. If you find any problem, troubleshoot it according to the instruction manual or contact the supplier or manufacturer for assistance. Do not modify or disassemble the product or the system without authorization, as it may void the warranty or cause damage or injury.

•  Regularly inspect and clean the product and the system, and remove any dirt, corrosion, or deposits. Do not use any abrasive or corrosive material, as it may damage the product. Do not expose the product or the system to extreme temperature, pressure, or chemical, as it may affect the performance or lifespan of the product.


ALLOY 718 is a product that Hangnie Super Alloys Co., Ltd. offers to its customers with its rich experience and strong technical force in the Nickel Alloys and Stainless Steels industry. It has many advantages, such as high quality, high performance, high resistance, and high versatility. It can meet the needs of various applications and working conditions. It is a product that customers can trust and choose.

If you want to know more about ALLOY 718 or other products of Hangnie Super Alloys Co., Ltd., please contact us:


WhatsApp:  +86 13661794406


Post time: Jan-08-2024