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MP35N Alloy - MP35 N - AMS 5844

MP35N*

Available in any of the 'profile options'

MP35N is an age hardenable Nickel-Cobalt base alloy that has a unique combination of properties - ultra high strength, toughness, ductility and outstanding corrosion resistance. MP35N resists corrosion in hydrogen sulphide, salt water and other chloride solutions. It also has excellent resistance to crevice and stress corrosion cracking in sea water and other hostile environments. Suitable where a high combination of strength, high modulus values and good corrosion resistance are required. Applications for this alloy also include medical devices and dental products.

Chemical Composition Specifications Designations Key Features Typical Applications
Element Min % Max %
C - 0.025
P - 0.015
Si - 0.15
Ni 33.00 37.00
Co bal
Mn - 0.15
S - 0.01
Cr 19.00 21.00
Mo 9.00 10.50
Ti - 1.00
Fe - 1.00
AMS 5844
AMS 5845
ASTM F562
ISO 15156-3
(NACE MR 0175)
ISO 5832-6
W. Nr. 2.4999
UNS R30035
AWS 110
Combination of high strength, ductility and good mechanical properties at ambient temperatures
Excellent corrosion resistance in hydrogen sulphide
Excellent resistance to crevice and stress corrosion cracking in sea water
Age hardenable (Spring Temper only)
Medical Devices
Marine Engineering
Density 8.43 g/cm³ 0.304 lb/in³
Melting Point 1440°C 2625°F
Coefficient of Expansion 12.8 μm/m °C (20 - 100°C) 7.1 x 10-6 in/in °F (70 - 212°F)
Modulus of Rigidity 80.7 kN/mm² 11705 ksi
Modulus of Elasticity 234 kN/mm² 33939 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed - - - - -
Spring Temper Age Harden 650 1200 4 Air
Properties
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 800 - 1000 116 - 145 -200 to +315 -330 to +600
Spring Temper 1400 - 1900 203 - 276 -200 to +315 -330 to +600
Spring Temper + Aged 1900 - 2200 276 - 319 -200 to +315 -330 to +600

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of SPS Technologies

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