Introduction
LORK is a alloy manufacturer with 20 years of manufacturing experience.
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.
Nickel Cobalt Alloy MP35N Applications
- Fasteners
- Springs
- nonmagnetic electrical components
- medical instruments
- medical and dental devices
- seawater
- oil and gas well
- chemical applications
- food processing environments
MP35N Benefits
- Exceptional Corrosion Resistance: Offers superior performance in harsh, corrosive environments, including resistance to pitting and crevice corrosion.
- High Strength: Provides one of the highest strength levels among metallic materials, even at elevated temperatures.
- Outstanding Toughness: Maintains excellent toughness and ductility over a wide range of temperatures, making it ideal for demanding applications.
- Biocompatibility: Suitable for medical implant devices due to its excellent biocompatibility and resistance to body fluids.
- Good Fatigue Resistance: Exhibits superior fatigue strength, crucial for cyclic loading applications such as springs and cables.
- Resistance to Stress Corrosion Cracking: Highly resistant to stress corrosion cracking, especially in environments containing chlorides or hydrogen sulfide.
- Magnetic Properties: Non-magnetic, which is essential for electronic and certain medical applications where magnetic interference must be minimized.
- Wear Resistance: Exhibits good wear resistance, beneficial in applications involving friction and material wear.
Nickel Cobalt Alloy MP35N 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
Nickel Cobalt Alloy MP35N Chemical Composition
| Weight % | Ni | Co | Cr | Mo | Ti | Fe | Si | Mn | P | B | S | C |
| MP35N | 33-37 | Bal | 19-21 | 9-10.5 | 1 max | 1 max | 0.15 max | 0.15 max | 0.015 max | 0.010 max | 0.010 max | 0.03 max |
Nickel Cobalt Alloy MP35N Mechanical Properties
| Material | Condition | Ultimate Tensile Strength ksi | 0.2 % Yield Strength ksi | Elongation % | Reduction of Area % | Hardness HRC |
| MP35N AMS 5844 | Solution Heat Treated and Work Strengthened | 255 | 225 | 12 | 50 | 45 |
| MP35N AMS 5845 | Solution Heat Treated and Work Strengthened and Aged | 260 | 230 | 8 | 35 | 38 min |
Nickel Cobalt Alloy MP35N Characteristics
- Excellent tensile strength, ductility and toughness
- Excellent resistance to the effects of corrosion
- Resistant to hydrogen sulphide corrosion, saltwater corrosion and also offers resistance to other chloride solutions and certain mineral acids
- Resistance to crevice cracking in saltwater environments is also excellent.
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.
Nickel Cobalt Alloy MP35N Heat Treatment
MP35N should be aged at the temperature required to achieve the final properties desired. The amount of cold work in MP35N defines the recommended aging treatments. For AMS 5844 (fully strength/heavily cold worked) material, the alloyshould be ages at 1000ºF - 1200ºF for 4 hours. For optimum sulphide SCC resistance, less-heavily cold worked material can be aged at 1300ºF or 1350ºF for 4 hours or at 1425ºF for 6 hours as indicated in NACE MR-0175. The 425ºF aging treatment provides the best sulphide SCC resistance, but at the expense of strength. Exposure to temperatures much above the recommended aging temperatures may result in significant (and nonrecoverable) loss in strength cause by the reversion of the cold-worked metallurgical structure to the much softer annealed structure.
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
