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Add.: 139 Bedok North Avenue 3, #10-188, Singapore 460139
Tel: 0065 9664 4411
Email:tonytay@eatonalloys.com

Web:www.eatonalloys.com

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Tel: 0086 28 81703462
Email: sales@eatonalloys.com
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MP35N

 MP35N® (AMS 5844/AMS 5845/ NACE MR0175)
 
Technical Data
MP35N® is a multi-phase alloy containing Nickel, Cobalt, Chromium and Molybdenum with a unique range of properties - ultra high strength, toughness, biocompatibility and corrosion resistance. It is produced by vacuum induction melting and vacuum arc re-melting (VIM-VAR) and is then strengthened by work hardening and aging, giving hardnesses of up to 55-60 Rockwell C and strength levels as high as 260-300KSI.
 
Due to this unique combination of properties, MP35N® has many applications in such industries as oil and gas, aerospace and medical. MP35N can be effectively used at cryogenic temperatures without embrittlement and maintain its properties at temperatures up to 600°F, and is also suitable for medical implants and orthodontic/ prosthetic devices.
 
MP35N® is able to resist corrosion to most mineral acid, hydrogen sulfide and seawater environments whilst exhibiting excellent resistance to stress corrosion cracking and hydrogen embrittlement, even at high strength levels. NACE MR0175 allows a hardness of up to 51 HRC for material that has been work strengthened and aged by one of the processes listed in the table below.
 
 
Chemical Composition
MP35N® is a registered trademark of SPS Technologies Inc.
Carbon  0.025 max
Manganese  0.15max
Silicon  0.15max
Phosphorus 0.015 max
Sulfur 0.010 max
Chromium 19.00-21.00
Nickel  33.00-37.00
Molybdenum  9.00-10.50
Titanium  1.00 max
Iron  1.00 max
Cobalt  remainder


 
Mechanical Properties

 
Properties MP35N
AMS5844
MP35N
AMS5845
Condition Solution heat treated and work strengthened Solution heat treated and work strengthened and aged
Ultimate Tensile Strength (ksi) 255 260
0.2%Yield Strength (ksi) 225 230
Elongation % 12 8
Reduction of Area % 50 35
Hardness (HRC) 45 38min
* AMS specifications only requires that the hardness shall not be lower than 38HRC or equivalent.

Specifications
UNS R30035
 
AMS 5758 - MP35N® VIM-VAR Bar
Solution heat treated @1900-1925°F for 4 to 8 hours
 
AMS 5844 - MP35N® VIM-VAR Bar
Solution heat treated @1900-1925°F for 4 to 8 hours and Work Strengthened
 
AMS 5845 - MP35N® VIM-VAR Bar
Solution heat treated @ 1900-1925°F for 4 to 8 hours, Work Strengthened & Aged @ 1000-1200°F for 4 hours
 
NACE MR0175
ASTM F-562 - Surgical Implant Applications
BS 7252-6 Surgical Implant Applications
ISO 5832-6 Surgical Implant Applications
 
MP35N® is a registered trademark of Standard Pressed Steel (SPS) Technologies Inc.