Haynes 625 is a nickel-chromium-molybdenum alloy with niobium/tantalum added to enhance its corrosion resistance and strength at elevated temperatures. It is one of the most widely used superalloys due to its exceptional mechanical properties, high corrosion resistance, and ease of fabrication.
Haynes 625 has excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-containing environments, making it suitable for use in marine and chemical processing applications. It also exhibits high resistance to oxidation and scaling at elevated temperatures up to 1000℃, making it suitable for use in high-temperature applications such as gas turbines, furnace components, and heat exchangers.
Haynes 625 can be easily fabricated by various methods including welding, forging, and machining. It can be used in both as-welded and annealed conditions. It is available in various forms such as plates, sheets, bars, and tubes, and is widely used in industries such as aerospace, chemical processing, oil and gas, and nuclear power.
US standards: AMS 5599: Specifies the standard specifications for Haynes 625 plate, sheet, and strip; AMS 5666: Specifies the standard specifications for Haynes 625 bars, wire, profiles, and forgings; AMS 5837: Specifies the standard specifications for Haynes 625 seamless or welded tubes; ASME SB 443: Specifies the standard specifications for Haynes 625 plate, sheet, and strip; ASME SB 446: Specifies the standard specifications for Haynes 625 bars and forgings; ASME SB 444: Specifies the standard specifications for Haynes 625 seamless and welded tubes.
European standards: EN 2.4856: Specifies the standard specifications for Haynes 625 plate, sheet, strip, bars, and wire; EN 10216-5: Specifies the standard specifications for Haynes 625 seamless steel tubes.
Japanese standards: JIS NW 625: Specifies the standard specifications for Haynes 625 plate, sheet, strip, bars, and seamless tubes; JIS NW 6692: Specifies the standard specifications for Haynes 625 welded tubes.
Chinese standards: GB/T 14992: Specifies the standard specifications for Haynes 625 plate, sheet, and strip; GB/T 14994: Specifies the standard specifications for Haynes 625 welded seamless steel tubes; GB/T 15008: Specifies the standard specifications for Haynes 625 bars and forgings; GB/T 15010: Specifies the standard specifications for Haynes 625 seamless and welded tubes.
Application fields:
Haynes 625 has a wide range of applications due to its excellent mechanical properties and high corrosion resistance. Some of its common applications include:
Aerospace: Haynes 625 is used in gas turbine engines, aircraft exhaust systems, and combustion chambers due to its high strength, excellent oxidation resistance, and high-temperature stability.
Chemical Processing: Haynes 625 is used in chemical processing equipment such as valves, pumps, and reactors due to its high resistance to corrosion and erosion in acidic and alkaline environments.
Oil and Gas: Haynes 625 is used in oil and gas extraction and production equipment such as downhole tubing, subsea components, and surface wellhead equipment due to its high resistance to corrosion, pitting, and stress corrosion cracking in harsh offshore environments.
Nuclear Power: Haynes 625 is used in nuclear power plant components such as reactor core support structures, steam generator tubing, and control rod drive mechanisms due to its high strength and corrosion resistance in high-temperature and high-radiation environments.
Marine: Haynes 625 is used in marine applications such as seawater pumps, valves, and heat exchangers due to its high resistance to corrosion and erosion in seawater environments.
Heat Exchangers: Haynes 625 is used in heat exchangers for various industries such as chemical processing, power generation, and oil and gas due to its high-temperature stability, excellent thermal conductivity, and resistance to corrosion and fouling.
Overall, Haynes 625 is a versatile alloy that finds applications in various industries due to its exceptional mechanical properties and high resistance to corrosion in harsh environments.
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WAYEN.M.IND CO.,LTD was established in 2009. Since its establishment, the company has been committed to the sales and research and development of stainless steel, alloy steel and other alloy materials. Cooperate with many famous steel mills around the world and become the first-tier inventory supplier of steel mills. The products are very extensive, including: austenitic stainless steel, marten...
