Thread MP35N Bolts Fastener Full Strength With Stress Corrosion Cracking Resistance

Product Details:
Place of Origin: China
Brand Name: JINXING
Certification: ISO 9001
Model Number: MP35N Thread Bolt Fastener
Payment & Shipping Terms:
Minimum Order Quantity: 5kg
Price: 30~200USD/kg
Packaging Details: Plywood Case
Delivery Time: 30~60 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 10tons/M

Detail Information

Material: MP35N Density: 8.43 G/cm3
Melt Point: 1440 C Rigid Modulus: 80.7KN/mm2
Modulus Of Elasticity: 234 KN/ Mm2 Linear Expansion Coefficient: 12.8 A/10-6℃-1
Standard: ASTM F562 AMS 5844 AMS 5845 Heat Treatment: Solution Annealing, Aging Treatment
High Light:

ni based alloys


nickel based superalloys

Product Description

MP35N Thread Bolt Fastener UNS R30035 AMS 5844 260 to 300 ksi (1793-2086 MPa)

MP35N alloy is work-strengthened and aged to obtain strength levels of 260 to 300 ksi (1793-2086 MPa) in its full strength and stress corrosion cracking resistance (SCC) for harsh environments. MP35N® alloy resists corrosion in hydrogen sulfide, salt water and other chloride solutions, as well as the mineral acids (nitric, hydrochloric, sulphuric). In addition, it has exceptional resistance to crevice cracking in seawater and other hostile environments.


Since its development, MP35N has been successfully used in applications outside of the aerospace industry. For instance, it is the highest strength material approved for structural components in aggressive, sour well environments (NACE specification MR0175 Sulfide Stress Cracking Resistant Metallic Materials for Oil Equipment).

  • Description

MP35N Thread Bolt Fastener

MP35N Fasteners | Forgings | Bolts | Nuts | Washers

MP35N Thread Rod , MP35N bolts , MP35N fasteners , UNS R30035 bolts , MP35N Thread Bar, MP35N Specifications: AMS 5844, AMS 5845, AMS7468, ASTM F562, NACE MR0175. MP35N alloys are used in fasteners, springs, non-magnetic assemblies and instrumentation components in Automobile, medical, marine, oil and gas well, chemical and food processing environments.


Nominal Composition
Nickel 35%
Cobalt 35%
Chromium 20%
Molybdenum 10%

MP35N is often selected as a fastener alloy for its ability to resist stress corrosion cracking. In laboratory tests, MP35N alloy samples were loaded to 90% of their proportional limit and alternately immersion tested in 3% salt solution for 10 minutes and in moving air for 50 minutes. After 2500 hours, no evidence of general corrosion or cracking appeared.


Chemical composition:

C % Si % Mn % Cr % Ni % Fe % Ti % Mo % OTHERS %
max. 0.02 max. 0.15 max. 0.15 20.00 35.00 max. 1.00 max. 1.00 10.0 Co = rest.

Crevice corrosion tests were performed on MP35N, MP159, 13-8Mo and Custom 455 alloy bolts in a 10% ferric chloride solution. Several bands of electroplater’s tape were applied to the bolts to promote the conditions necessary for crevice corrosion. Following 6 hours of exposure to the solution, Multiphase alloy bolts exhibited no visible evidence of corrosion while the other alloy bolts experienced extensive attack.

MP35N Physical propertie

Melt Point ℃ Thermal conductivity
Specific heat capacity
Rigid modulus
Modulus of elasticity
linear expansion coefficient
8.43 1440     80.7 234   12.8


The properties of mp35n are realized by work hardening, martensitic transformation and aging treatment. Through cold working, a part of the matrix is transformed into solid phase transition from FCC crystal structure to HCP structure. This transformation is due to the high content of cobalt in the alloy and is called "multiphase reaction". There are two kinds of different crystal structures, the movement of the dislocation constitutes obstacles and leads to obvious strengthening. The subsequent age hardening stabilizes these two stages through the solute distribution process, helping to further strengthen them.



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