MP35N®

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Carpenter MP35N* Ni-Co-Cr-Mo Alloy, 0% Cold Reduction

Delta Fastener Corp. can provide a wide variety of fasteners, nuts, bolts, sockets, washers and more in MP35N. If we do not have your item in stock (Inch or Metric) we can have these manufactured to your specification.

Material Notes:

Carpenter 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. MP35N alloy is normally produced by vacuum induction melting (VIM), followed vacuum arc remelting (VAR).

Because of its unique combination of properties, MP35N alloy has been used in a wide variety of applications. MP35N alloy 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. *MP35N is a trademark of SPS Technologies, Inc. MP is a registered trademark of SPS Technologies, Inc.

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Physical Properties Metric English Comments
Density 8.43 g/cc 0.305 lb/in3

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Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 931 MPa 135000 psi
Tensile Strength, Yield 414 MPa @Strain 0.200 % 60000 psi @Strain 0.200 %
Elongation at Break 70.0 % 70.0 %
Reduction of Area 70.0 % 70.0 %
Modulus of Elasticity 232.8 GPa 33770 ksi
Shear Modulus 83.36 GPa 12090 ksi

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Electrical Properties Metric English Comments
Electrical Resistivity 0.0001033 ohm-cm 0.0001033 ohm-cm Room Temp. 1.154E-4 Ohm-cm at 538°C

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Thermal Properties Metric English Comments
CTE, linear 12.8 µm/m-°C @Temperature 21.0 - 93.0 °C 7.11 µin/in-°F @Temperature 69.8 - 199 °F
14.8 µm/m-°C @Temperature 21.0 - 316 °C 8.22 µin/in-°F @Temperature 69.8 - 601 °F
15.7 µm/m-°C @Temperature 21.0 - 538 °C 8.72 µin/in-°F @Temperature 69.8 - 1000 °F
Thermal Conductivity 11.2 W/m-K 77.7 BTU-in/hr-ft2-°F at room Temp. 17.0 W/m-K at 316°C. 23.4 W/m-K at 649°C.
Melting Point 1315 - 1440 °C 2399 - 2620 °F
Solidus 1315 °C 2399 °F
Liquidus 1440 °C 2620 °F

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Component Elements Properties Metric English Comments
Boron, B 0.010 % 0.010 %
Carbon, C <= 0.025 % <= 0.025 %
Chromium, Cr 19.0 - 21.0 % 19.0 - 21.0 %
Cobalt, Co 33.0 % 33.0 % as remainder
Iron, Fe <= 1.0 % <= 1.0 %
Manganese, Mn <= 0.15 % <= 0.15 %
Molybdenum, Mo 9.0 - 10.5 % 9.0 - 10.5 %
Nickel, Ni 33.0 - 37.0 % 33.0 - 37.0 %
Phosphorous, P <= 0.015 % <= 0.015 %
Silicon, Si <= 0.15 % <= 0.15 %
Sulfur, S <= 0.010 % <= 0.010 %
Titanium, Ti <= 1.0 % <= 1.0 %

Data provided by Carpenter Technology Corporation.

Disclaimer: The dimensions listed are for reference only. Sizes not listed may be available off the shelf or can be manufactured to customer requirements.

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