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Mp35n

Mp35n

MP35N is an alloy made of nickel, cobalt, chromium, and molybdenum that can handle tough conditions. It has 35% nickel, 35% cobalt, 20% chromium, and 10% molybdenum. Its MP35N composition makes the alloy stronger and more stable, and it also protects it from corrosion in harsh environments like chloride solutions. This is one of the few alloys that has very high strength and is very resistant to stress-corrosion cracking and hydrogen embrittlement. It can also be made even stronger by cold working and aging.

Parag Metals is a trusted MP35N supplier, making this alloy available in bar, wire, strip, and tube for a wide range of industries. MP35N has a tensile strength of 260–300 ksi when it’s fully processed, and its yield strength is almost the same as its tensile strength. Hardness also increases with treatment, often reaching around 40 HRC. Because of this balance, MP35N material is widely used in springs, fasteners, implants, and oilfield tools where failure is not an option.

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MP35N Sheet, MP35N Plate, MP35N Coils, MP35N Rods, MP35N Wires Suppliers in Mumbai, India.

The alloy has predictable physical properties that make it reliable in extreme service. Its density is 8.43 g/cm³, and it has a melting range between 1315–1440°C. At cryogenic temperatures, Mp35n remains durable and maintains its performance at higher service levels. It can become less hard after being exposed to high heat for a long time, but it is still strong enough to be used in parts that will be under constant stress in corrosive environments.MP35N stays non-magnetic even after being strengthened.  This feature is extremely important in medical devices and electronic systems where magnetic interference needs to be avoided.  Because it is resistant to corrosion and fatigue, along with having a long service life, the alloy is a reliable choice for important parts in many industries.

Fabrication and joining follow established industry practice but require care because the alloy hardens rapidly when worked on. Forming is usually done in the annealed condition and strength is introduced by cold reduction and aging to meet application needs. Welding is feasible with appropriate filler metals and controlled heat input; many fabricators perform post-weld aging to recover or enhance properties in the weld zone. For machining, sharp tools, steady feeds and good cooling reduce strain hardening and extend tool life. Routine inspections, chemical checks, mechanical tests and corrosion evaluations help ensure delivered product meets the expected specification and service requirements.

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MP35N Specification

MP35N is listed under UNS R30035 and is produced to standards such as ASTM and AMS. It can be utilized in a variety of equipment because it comes in bar, wire, strip, and tube forms.

ProductStandard / UNS
Specification

AMS 5758

AMS 5844

AMS 5845

ASTM F562

ASTM F688

NACE MR01-75/ISO15156

 AvailabilityBar,rod,wire,sheet,plate,strip,and tubing
Applications
  • High-strength marine components

  • Springs

  • Valve stems and pump shafts in the Oil & Gas sector

  • Fastener system components – pins, tension bolts, shear bolts, engine bolts, tie rods

  • Medical applications – bone plates, screws, pins

MP35N Chemical Composition

Nickel and cobalt are the alloy’s main constituents, while molybdenum and chromium add strength and corrosion resistance. Small amounts of iron, silicon, and carbon are kept very low to maintain clean processing.

Chemical Composition
Ni 35.0% Co 33.0% Cr 20.0% Mo 10.0% Fe 1.0% Max
Ti 1.0% Max Mn 0.20% Max Si 0.20% Max C 0.03% Max P 0.020% Max
B 0.01% Max S 0.01% Max

MP35N Mechanical Properties

In its annealed condition, MP35N has good ductility and is easier to form. After cold working and aging, it develops very high strength and hardness. The alloy hardens quickly when worked on, so machining requires sharp tools, controlled speeds, and proper cooling. Heat treatment is also used to increase hardness and achieve the desired balance of properties.

Mechanical Properties
Property Minimum Maximum
Yield Strength (Rp0.2 Offset) (ksi) 29 57
Tensile Strength (Rm) (ksi) 152 362
Elongation (AL = 5 × Ø) 1.0% 40%
Brinell Hardness (HB) 353 487
Modulus of Elasticity (E, ksi) 33,770
Machinability (General Index) Unknown

Nickel-Cobalt MP35N Physical Properties

With a density of 8.43 g/cm³, a high melting range, and stable performance under stress, MP35N is a reliable choice for difficult environments. Its non-magnetic nature, strength, and corrosion resistance make it ideal for aerospace, oilfield, and medical uses.

Physical Properties
Density
(lb/in³)
Electrical Conductivity
(% IACS)
Thermal Conductivity
(BTU·in/hr·ft²·°F)
Specific Heat Capacity
(BTU/lb·°F)
Thermal Expansion
(1/°F)
Melting Point
(°F)
0.305 1.67 78 0.12 7.11 × 10⁻⁶ 2510

Application of MP35N

Available MP35N Product Forms