Latrobe MP35N® Alloy

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Latrobe MP35N® Alloy
Categories:	Metal; Nonferrous Metal; Cobalt Alloy; Nickel Alloy
Material Notes:	MP35N is a nickel-cobalt base alloy of the Multiphase alloy system that has a unique combination of properties - ultra high strength, toughness, ductility, and outstanding corrosion resistance. The alloy is work-strengthened and aged to obtain strength levels of 260 to 300 ksi. MP35N alloy resists corrosion in hydrogen sulfide, salt water and other chloride solutions, as well as the mineral acids. It has exceptional resistance to crevice and stress corrosion cracking in sea water and other hostile environments. Information Provided by Timken Latrobe Steel. Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
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Physical Properties	Original Value	Comments

Density	0.309 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	90	Annealed
Tensile Strength, Ultimate	130 ksi	Annealed
Tensile Strength, Yield	379 MPa @Strain 0.2 %	Annealed
Elongation at Break	65 %	Annealed; in 4D
Reduction of Area	75 %
Modulus of Elasticity	33760 ksi	Annealed
	34050 ksi	Cold Worked and Aged
	29150 ksi @Temperature 482 °C	Annealed
	29190 ksi @Temperature 482 °C	Cold Worked and Aged
Shear Modulus	9830 ksi @Temperature 482 °C	Cold Worked and Aged
	10240 ksi @Temperature 482 °C	Annealed
	11740 ksi @Temperature 25.6 °C	Cold Worked and Aged
	12090 ksi @Temperature 25.6 °C	Annealed

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000986 ohm-cm @Temperature -184 °C
	0.0001011 ohm-cm @Temperature -73.0 °C
	0.0001033 ohm-cm @Temperature 20.0 °C
	0.0001051 ohm-cm @Temperature 93.0 °C
	0.0001078 ohm-cm @Temperature 204 °C
	0.0001104 ohm-cm @Temperature 316 °C
	0.0001179 ohm-cm @Temperature 649 °C
Magnetic Permeability	1.00085	At 392K
	1.00142	At 78K
Magnetic Susceptibility	8.03	At 392K
	13.47	At 78K

Thermal Properties	Original Value	Comments
CTE, linear	11.2 µm/m-°C @Temperature -100 - 121 °C
	13.7 µm/m-°C @Temperature 21.0 - 204 °C
	15.7 µm/m-°C @Temperature 21.0 - 538 °C
Thermal Conductivity	6.50 W/m-K @Temperature -184 °C
	15.0 W/m-K @Temperature 204 °C
Melting Point	1315 - 1440 °C
Solidus	1315 °C
Liquidus	1440 °C

Component Elements Properties	Original Value	Comments
Chromium, Cr	20 %
Cobalt, Co	35 %
Molybdenum, Mo	10 %
Nickel, Ni	35 %

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Latrobe MP159® Alloy

NTIMK015 / 19363

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