Overview

MP35N R30035/W.Nr. 2.4999 alloy steel is a nickel, chromium, cobalt alloy. This grade is non-magnetic and possesses an ultra-high tensile strength, and provides for good ductility. This alloy has a maximum 750 degree F temperature capability.

We can produce and supply Mp35N in the shape of bar, rod, wire,and strip.

Limiting Chemical Composition, %

Nickel..................................................................................................................................................................................33.00-37.00

Chromium...........................................................................................................................................................................19.00-21.00

Cobalt..................................................................................................................................................................................31.15-39.00

Iron..........................................................................................................................................................................................1.00 max.

Manganese.............................................................................................................................................................................0.15 max.

Carbon..................................................................................................................................................................................0.025 max.

Silicon.....................................................................................................................................................................................0.15 max.

Sulphur....................................................................................................................................................................................0.01 max.

Phosphorus..........................................................................................................................................................................0.015 max.

Molybdenum.........................................................................................................................................................................9.00-10.50

Titanium..................................................................................................................................................................................1.00 max.

Physical properties

Mechanical Properties

Corrosion resistance

MP35N alloy offers outstanding resistance to general corrosion, crevice corrosion and stress corrosion at all strength levels. The four alloying elements in MP35N being 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, saltwater and other chloride solutions, as well as the mineral acids (nitric, hydrochloric, and sulphuric). The alloy 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.

Machinability

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.

Available  Forms