ASTM B564 N04400 Monel 400 Nickel Alloy Steel Forged Blind Raised Face Flange B16.5

ASTM B564 N04400 Monel 400 Nickel Alloy Steel Forged Blind Raised Face Flange B16.5

ASTM B564 N04400 nickel alloy steel forged blind raised face flange is a flange manufactured based on nickel copper alloy (Monel 400, UNS N04400), which complies with the B564 standard of the American Society for Testing and Materials (ASTM). This material is known for its excellent corrosion resistance, high strength, and high temperature resistance, and is widely used in pipeline connection systems in extremely corrosive environments.

ASTM B564 specifies the manufacturing requirements for N04400 nickel alloy steel forged flange, covering the chemical composition, mechanical properties, and testing standards of products such as flanges and fittings. Its main chemical components are nickel (Ni) ≥ 63%, copper (Cu) 28-34%, small amounts of iron (Fe), manganese (Mn), carbon (C), etc.

ASTM B564 N04400 Nickel Alloy Steel Forged Flange Chemical Composition

The core performance advantages of ASTM B564 N04400 mainly lie in corrosion resistance, mechanical properties, processing and weldability:

In terms of corrosion resistance, N04400 nickel alloy steel has strong resistance to seawater corrosion, acid and alkaline medium corrosion, and can be applied to marine platforms and ship systems. It also maintains stable performance in non oxidizing acids such as hydrofluoric acid and sulfuric acid, as well as high-temperature alkaline environments; 

In terms of mechanical properties, N04400 nickel alloy steel material has high strength, high temperature resistance, low temperature toughness, tensile strength not less than 550MPa, yield strength not less than 240MPa, can work for a long time below 500 ℃, can withstand higher temperatures in the short term (avoiding oxidation environment), and still maintain good ductility at -100 ℃;

In terms of processing, it is necessary to control the processing rate to avoid hardening of N04400 nickel alloy steel material. The recommended hot working temperature is 650-1175 ℃. In terms of welding technology, TIG, MIG or shielded metal arc welding can be used, and it is recommended to use Monel welding material (such as ENiCu-7).

ASTM B564 N04400 Nickel Alloy Steel Mechanical Property Requirements

ASTM B564 N04400 Nickel Alloy Steel Forged Flange Application:

• Marine and Ship Engineering: N04400 nickel alloy steel forged flange is used as a pump valve flange and seawater desalination equipment connector in seawater pipeline systems; As a ship propeller shaft sleeve, it is resistant to seawater erosion and corrosion.

• Chemical and petrochemical industries: N04400 nickel alloy steel forged flange can be used as a reactor flange and storage tank interface in hydrofluoric acid equipment; Connect the pipeline for transporting high-temperature dilute sulfuric acid medium in the sulfuric acid recovery unit; Applied to the brine treatment system in the chlor alkali industry.
• Energy and environmental protection: N04400 nickel alloy steel forged flange can be used as a corrosion-resistant flange for cooling water systems in nuclear power plants and pipelines for nuclear waste treatment; Acid dew point corrosion protection of sulfur-containing waste gas treatment system.
• Oil and gas: N04400 nickel alloy steel forged flange can be used for wellhead equipment flanges that are resistant to hydrogen sulfide (H ₂ S) and carbon dioxide (CO ₂) corrosion; Used as a low-temperature pump valve connector in liquefied natural gas (LNG).