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MP35N Nickel AlloyMP35N

Nickel-Cobalt-Chromium-Molybdenum Alloy

MP35N is a vacuum induction, vacuum arc re-melted quaternary alloy based on nickel and cobalt with substantial additions of chromium and molybdenum.

The alloy possesses an unusually attractive combination of ultra-high strength, toughness and outstanding corrosion resistance. MP35N alloy may be employed in the annealed condition but can easily be work strengthened to tensile strength levels in excess of 260 ksi (1,793 MPa) with the retention of good ductility. Aging of worked material causes precipitation hardening and can raise the tensile strength by an additional 40 ksi (276 MPa). The density of MP35N alloy is 8.43 g/cc.

Corrosion Resistance:

MP35N alloy offers outstanding resistance to general corrosion, crevice corrosion and stress corrosion at all strength levels.

The four alloying elements in MP35N being the basis for corrosion resistance in almost every stainless steel, nickel and cobalt based alloy commonly used in industry. The alloy resists corrosion in hydrogen sulphide, salt water and other chloride solutions, as well as the mineral acids (nitric, hydrochloric, and sulphuric). The alloy is also resistant to hydrogen embrittlement. MP35N is an extremely noble metal, very similar to titanium, and may cause galvanic corrosion if coupled to a less noble material such as Type 316 stainless steel.

Working, Machining & Joining:

MP35N alloy can be hot and cold worked and formed by a wide variety of processes.

Work strengthening can be accomplished by extruding, rolling, swaging, drawing or a combination of these manufacturing processes. MP35N alloy may be TIG welded and in general its weldability is similar to that of Type 304 stainless steel. Joint efficiency is dependent upon the heat treatment / worked condition of the material.

The machinability of MP35N is similar to but better than that of Waspaloy, a widely used standard for nickel-cobalt-chromium base alloy machining performance.

Download MP35N Nickel Alloy Datasheet

Typical Applications:

  • Downhole pump drive shafts and tools
  • High strength marine components
  • Springs
  • Valve stems and pump shafts in Oil & Gas sector
  • Fastener system components – pins, tension bolts, shear bolts, engine bolts, tie rods
  • Medical applications – bone plates, screws, pins
  • Non -magnetic electrical components and sensing devices
  • Components in autosport
  • Aerospace components

We offer MP35N nickel alloy in bar, rod, wire, sheet, plate, strip and tubing.


We have thirty power saws available throughout the Smiths Group including a fully automated magazine feed CNC rod blanking line.

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