MP35N is a non-magnetic, nickel-cobalt-based alloy renowned for its exceptional combination of ultra-high strength, toughness, ductility, and outstanding corrosion resistance.
MP35N is a nickel-cobalt-based superalloy known for its exceptional strength, corrosion resistance, and durability.
The MP35N is a non-magnetic nickel-cobalt alloy offering a unique combination of high tensile strength, excellent corrosion resistance and toughness. It displays excellent tensile strength and maintains acceptable ductility. The MP35N's ability to withstand force-corrosion and fissure corrosion makes it an ideal material for a wide range of applications, including fasteners, springs, bolts, oil equipment, medical devices, valve stems and more.
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.
The four alloy elements in MP35N are the basis for corrosion resistance in almost every Stainless Steel, Nickel and Cobalt-based alloy commonly used in the industry. The alloy resists corrosion in hydrogen sulphide, salt water and other Chloride solutions, as well as the mineral acids (Nitric, Hydrochloric and Sulphuric).
MP35N is suitable where a high combination of strength, high modulus values and good corrosion resistance are required.
Good ductility
Good corrosion
resistance
High strength
With a unique combination of strength, ductility and excellent resistance to cracking, MP35N, in bar stock form, is a versatile alloy that makes it suitable for a range of applications.
The MP35N is a vacuum induction, vacuum arc re-melted quaternary alloy based on nickel and cobalt with substantial additions of chromium and molybdenum. The alloy boasts an impressive combination of ultra-high strength, toughness and outstanding corrosion resistance. The MP35N alloy can be employed in the annealed condition, but it can also be work-strengthened to tensile strength levels in excess of 260 ksi (1,793 MPa) while maintaining good ductility. As the material ages, precipitation hardening occurs, raising the tensile strength by an additional 40 ksi (276 MPa). The alloy has a density of 8.43 g/cc.
| Condition | Tensile | Yield | Elongation | Reduction of Area | Hardness |
|---|---|---|---|---|---|
| NACE | 190KSI | 180KSI | 10% | 40% | 51 HRC Max |
| AMS 5845 | 260KSI | 230KSI | 8% | 35% | 44 HRC Min |
Due to its high modulus values, hardness, and toughness, MP35N machinability may be more challenging than that of other metal alloys. However, with an acceptable level of ductility and high tensile strength, this alloy is ideally suite.
| Element | Weight (%) |
|---|---|
| Ni | 35 |
| Co | 35 |
| Cr | 20 |
| Mo | 10 |
The MP35N is an ideal solution for applications that require extreme resistance and durability, making it an excellent choice for environments like offshore oil rigs. The MP35N has a temperature limit of 750°F and offers excellent resistance to chloride solutions, saltwater, acidic materials including mineral acids, hydrogen components, stress, corrosion and other challenging conditions.
The MP35N alloy offers unparalleled resistance to general corrosion, crevice corrosion and stress corrosion at all strength levels. The four alloying elements in MP35N form the basis for corrosion resistance in almost every stainless steel, nickel and cobalt-based alloy commonly used in industry. The alloy is resistant to corrosion in hydrogen sulphide, salt water and other chloride solutions, as well as mineral acids (nitric, hydrochloric, sulphuric). It is also resistant to hydrogen embrittlement. MP35N is an extremely noble metal, very similar to titanium, and may cause galvanic corrosion if coupled to a less noble material such as Type 316 stainless steel.
MP35N is available in three different conditions: NACE, AMS 5844, and AMS 5845. In order to comply with the AMS 5844 standard, the MP35N must be hardened at approximately 1100°F. It should be noted that this material is vulnerable to climates with extreme heat temperatures above the recommended heat treatment.
For equipment that requires NACE MR0175, MP35N with excellent sulfide stress cracking resistance, or jobs that do not require cryogenic environments, the material will be heat treated at ~1350°F.
Availability： Bar, rod, wire, sheet, plate, strip, and tubing
MP35N alloy can be fully annealed in a short period of time (a matter of minutes) at temperatures between 1010°C and 1177°C. We can heat treat MP35N bar stock to your specifications, depending on the required condition.
The MP35N alloy is suitable for hot and cold working and can be formed by a wide variety of processes. The strengthening of the material can be achieved through a number of manufacturing processes, including extruding, rolling, swaging and drawing. In some cases, a combination of these processes may be necessary. MP35N alloy can be TIG welded and, in general, its weldability is similar to that of Type 304 stainless steel. The efficiency of the joint is dependent upon the heat treatment/worked condition of the material. MP35N is similarly machinable to Waspaloy, a widely used standard for nickel-cobalt-chromium base alloy machining performance, but with superior results.
MP35N is a great choice for parts that need to withstand corrosive chemicals, including hydrogen sulfide and saltwater. With a variety of conditions available and consistent high strength, the MP35N multiphase alloy is a high-performance material with applications across industries.
Depending on your specific application and industry, you may require different conditions of MP35N. With complimentary heat treatment and age-hardening services, we can provide MP35N round bar stock in three conditions: NACE, AMS 5844, and AMS 5845.
One of the key benefits of MP35N is its excellent corrosion resistance in a wide range of environments. It exhibits high resistance to general corrosion, pitting, and crevice corrosion even when exposed to seawater, acid solutions, or high-temperature steam. MP35N alloy is great for many industries due to its outstanding resistance to stress corrosion cracking.
A major advantage of MP35N is its capability to achieve ultra-high tensile strength levels, while still retaining good ductility and toughness.
With its resistance to corrosion, saltwater, and other chloride solutions, as well as its strength, MP35N is suitable for a range of applications in demanding environments that require durability, resistance, and high performance.
MP35N is widely used in oil and gas drilling and extraction applications that require good strength and outstanding corrosion resistance under high pressures and temperatures.
The high yield strength of MP35N allows drilling equipment to withstand very high stresses. With proper heat treatment, the MP35N alloy can provide an optimal combination of properties to meet oil and gas equipment reliability needs.
MP35N is an excellent material for marine applications requiring good corrosion resistance in salt water environments. It is used to make pump shafting, propellers, valve components, fasteners and other parts for marine engines and sea water systems.
The high strength of MP35N allows the construction of reliable components that resist failure under heavy loads and stresses that come with the ocean and other hostile environments.
In aerospace applications, MP35N is valued for having high strength with low density when compared to other high-strength alloys. It maintains good mechanical properties at cryogenic temperatures, making it useful for liquefied gas containment and aerospace cryogenic tooling.
MP35N’s excellent fatigue strength makes it suitable for landing gear and other dynamically-stressed airframe components.
This high-performance alloy can be used to form essential components in life-saving medical devices, from catheters and pacemakers to orthopedic wires, stents, and more. Manufacturers also use MP35N for the production of dental equipment and surgical implants, including electrodes and joints.
While MP35N alloy machinability may be limited due to its hardness and strength, the corrosion resistant properties make it a great choice for medical applications that require consistent performance.
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