Nickel molybdenum alloy has outstanding corrosion resistance
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- Category: Molybdenum knowledge
- Published on 19 August 2013
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Nickel molybdenum alloy has outstanding corrosion resistance at high strength levels. The alloy is resistant to most mineral acids, hydrogen sulfide, seawater, and salt spray environments. The alloy has exhibited excellent resistance to stress corrosion cracking (SCC) and hydrogen embrittlement. NACE Standard MR-01, "Metallurgy of Oil Field Equipment for Resistance to Sulfide Stress Cracking" approves the use of MP35N in the cold reduced or cold reduced and aged condition up to hardness levels of Rockwell C60 for springs and diaphragms. MP35N is one of only a few alloys approved for use as springs at hardness levels above RC50.
The high strength and corrosion resistance, high modulus, ease of fabrication, and other mechanical properties make MP35N a candidate for high performance hardware items where emphasis is placed upon dependability. These include a wide range of fasteners, high strength wire, prosthetic devices, chemical and marine equipment, aircraft and aerospace components.
MP35N is an excellent material for demanding applications such as torsion springs for NASA space equipment, missile wing deployment springs, heart pacer leads, nuclear valve springs and springs exposed to chloride environments in the petroleum and marine industries. It can be used at cryogenic temperatures without embrittlement, and up to 600o F without loss in performance. The MP35N alloy has also shown excellent service in sour well conditions where hydrogen sulfide is present at partial pressures greater than 0.05 psia.
MP35N alloy with outstanding strength and corrosion resistance is ideal for critical applications in the aerospace, defense, marine, chemical processing, oil and gas, and medical fields.
H.C. Starck's Euclid, Ohio facility manufactures flat rolled plate, sheet, and foil products from MP35N alloy. Material is available from 0.002" (0,05mm) - 1.5" (38.1mm) thickness to a maximum of 24" (610mm) width.
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