Alloy MP35N® : Tough, Strong, Superalloy


CWI Nickel Prime Series MP35N® is a multi-phase, nickel-cobalt based alloy that has a unique combination of ultrahigh tensile strength, good toughness and excellent corrosion resistance. 


MP35N® is a true superalloy: it maintains its toughness, ductility, and corrosion resistance in a range of environments from cryogenic temperatures up to 850°F (454°C), and is virtually immune to crevice and stress corrosion. MP35N® is highly resistant to sulfide stress corrosion cracking and provides excellent performance in the most demanding sour well environments, making it a highly sought-after alloy for oil & gas extraction. It's a preferred choice for jobs and applications like medical devices, aerospace engines, and springs.


Chemical Composition

Cr: 19.0-21.0%, Mo: 9.0-10.5%, Ni: 33.0-37.0% and Co: Balance per AMS 5844

 Qualifying Specifications and Standards

Standard Designation
UNS R30035
AMS 5758, 5844, 5845
NACE MR0175, MR0103
ASTM F-562
BS 7252-6
ISO 5832-6


Due to Alloy MP35N®'s high combination of strength, high modulus values, and good corrosion resistance, Alloy MP35N® is used in:

  • Medical Devices
  • Dental Products
  • Aerospace and Defense
  • Fasteners
  • Oil & Gas
  • Engines
  • Pressure Housings
  • Springs
  • Torsion Bars
  • Seals

 Availability & Forms

Alloy MP35N® is a stocked product at Central Wire Industries. Lead times vary based on processing required to finished form, but raw material is available at many Central Wire locations. Central Wire makes Alloy MP35N® available in the following forms:

Request a Quotation

Please contact us for additional details, product availability, and any other questions you may have. Send an inquiry to, or complete our inquiry form and we will respond as soon as possible. 

Stainless Spring Wirealloys-1oil and gas - 2