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MP159 - UNS R30159 Bar

MP35N® - UNS R30159 Bar is extremely suitable in environments where a high combination of strength, high modulus values and good corrosion resistance are required.

MP159 - UNS R30159 Bar is a nickel-cobalt base alloy with the same characteristics as the MP35N® alloy. MP159® has an excellent strength and ductility in temperatures up to 1100- 1200° F. MP159® has stress corrosion and corrosion resistant to crevice corrosion and hydrogen.

Super alloys contain many elements in a variety of combinations to obtain desired results. These alloys are good for use at high temperatures and severe mechanical stress, and also in cases where high surface stability is needed. Super alloys provide good creep and oxidation resistance. Strengthening of super alloys is performed by work hardening, solid-solution hardening, and precipitation hardening methods. MP 159™ is a multiphase cobalt-nickel-chromium alloy with ductility, corrosion resistance, and ultra-high strength.


  • Orthodontic and Prosthetic devices
  • Oil Industry, Chemical and Marine equipment – Valve components, springs, high pressure door dogs
  • Aircraft and Aerospace components – springs, leading edge strips
  • High Pulse Magnet Research


MP 159 is mainly used in gas turbine hot section components that are operated in high temperature environment of up to 649°C (1200°F)

Also see 15-5 ph stainless steel


  • UNS : R30159
  • Specifications : AMS 5841, AMS 5842, AMS 5843

Chemical Composition

Element Content (%)
Cobalt, Co 35.7
Nickel, Ni 25.5
Chromium, Cr 19
Iron, Fe 9
Molybdenum, Mo 7
Titanium, Ti 3
Niobium, Nb 0.6
Aluminum, Al 0.2

Physical Properties

Properties Metric Imperial
Density 8.33 g/cm³ 0.301 lb/in³
Melting point 1427°C 2600°F

Mechanical Properties

Properties Metric Imperial
Density 8.33 g/cm³ 0.301 lb/in³
Melting point 1427°C 2600°F

Calico Metal Alloys LLP export products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

HASTELLOY, HAYNES and C-22 are registered trade names of Haynes International, Inc., MONEL & INCONEL are registered trade names of INCO family of companies., NITRONIC is a registered trade name of Armco Inc., CARPENTER & 20Cb-3 are registered trade names of Carpenter Technology Corporation., FERRALIUM is a registered trade name of Langley Alloys, LTD.