Stainless Steels and Special Alloy Banner

MP35N* Alloy


*Registered trademark of SPS Technologies

(UNS R30035)


Typical Composition0.025 max. C, 0.15 max. Mn, 0.015 max. P, 0.01 max. S, 0.15 max. Si, 19.00-21.00 Cr, 33.00-37.00 Ni, 9.00-11.00 Mo, 1.00 max. Ti, 0.01 B, 1.00 max Fe, Bal Co

DescriptionCarpenter MP35N alloy is a nonmagnetic, nickel-cobalt-chromium-molybdenum alloy possessing a unique combination of ultrahigh tensile strength (up to 300 ksi [2068 MPa]), good ductility and toughness, and excellent corrosion resistance. In addition, this alloy displays exceptional resistance to sulfidation, high temperature oxidation, and hydrogen embrittlement.

The unique properties of MP35N alloy are developed through work hardening, phase transformation and aging. If the alloy is used in the fully work hardened condition, service temperatures up to 750°F (399°C) are suggested.

ApplicationsBecause of its unique combination of properties, MP35N alloy has been used in a wide variety of applications.

It has been used in fasteners, springs, nonmagnetic electrical components and instrument parts in medical, seawater, oil and gas well, and chemical and food processing environments.

Typical Room Temperature Tensile Properties% Cold ReductionUltimate Tensile Strength0.2% Yield Strength% Elongation% Reduction in AreaHardness
0135 ksi (931 MPa)60 ksi (414 MPa)70708 HRC
15155 ksi (1069 MPa)118 ksi (814 MPa)417029 HRC
25170 ksi (1172 MPa)150 ksi (1034 MPa)286534 HRC
35194 ksi (1336 MPa)154 ksi (1062 MPa)226742 HRC
45228 ksi (1572 MPa)189 ksi (1303 MPa)176247 HRC
55265 ksi (1827 MPa)205 ksi (1413 MPa)125047 HRC
65280 ksi (1931 MPa)235 ksi (1620 MPa)114950 HRC
0135 ksi (931 MPa)60 ksi (414 MPa)68777 HRC
15158 ksi (1089 MPa)125 ksi (862 MPa)397033 HRC
25186 ksi (1282 MPa)175 ksi (1207 MPa)246539 HRC
35203 ksi (1400 MPa)195 ksi (1344 MPa)216243 HRC
45257 ksi (1772 MPa)251 ksi (1731 MPa)125246 HRC
53300 ksi (2068 MPa)290 ksi (1999 MPa)104850 HRC

Tensile Strength graph

Register/log in to our Tech Center for detailed technical alloy datasheets on more than 200 Carpenter specialty metals. The database is searchable and free.

Request a quote or contact your nearest service center.