What is NIMONIC 75 material?

Nimonic 75 alloy is a high temperature alloy with a chemical composition that includes the elements Ni, Cr, Fe, Ti and Al. The alloy has excellent high temperature strength, oxidation resistance and corrosion resistance and is able to maintain its performance stability at high temperatures. Due to its excellent high temperature performance, Nimonic 75 alloy is widely used in aerospace, petrochemical, nuclear energy, power and other fields.

Element | Chemical Composition (Mass Fraction)
Nickel (Ni) | 73 per cent
Iron (Fe) | 5%
Chromium (Cr) | 19%
Titanium (Ti) | 1%
Aluminium (Al) | 0.5%
Carbon (C) | 0.08
Manganese (Mn) | 0.35
Silicon (Si) | 0.35
Sulphur (S) | 0.015%
Phosphorus (P) | 0.015%

Production standards for Nimonic 75 alloy include AMS 5673, an aerospace material specification for the manufacture of nickel-based high-temperature alloy steel, plate and bar, and BS HR5, a British Standard specification for the manufacture of high-temperature alloy plate, bar, castings, etc. The production standards for Nimonic 75 alloy are AMS 5673, an aerospace material specification for the manufacture of nickel-based high-temperature alloy steel, plate and bar, and BS HR5.

Nimonic 75 alloy has excellent corrosion resistance and maintains its performance stability in a wide range of corrosive media. The alloy can be used for long periods of time in strong corrosive media such as nitric, sulfuric, hydrofluoric and hydrochloric acids. In addition, Nimonic 75 alloy has good oxidation resistance and maintains its stability at elevated temperatures.

Nimonic 75 alloy is widely used in aerospace, petrochemical, nuclear energy, power and other fields. In the aerospace industry, Nimonic 75 alloy is commonly used in the manufacture of high temperature components such as turbine blades, jet engine components, combustion chambers and gas turbines. In the petrochemical industry, the alloy is used in the manufacture of chemical reactors, pipelines, tanks and furnaces. In the nuclear energy sector, Nimonic 75 is used to manufacture high-temperature components in nuclear reactors. In addition, the alloy is used in the manufacture of high-temperature heat exchangers, high-temperature furnaces and heat treatment equipment.

Hot Work:

Nimonic 75 alloy can be hot worked, cold worked and heat treated to meet a variety of manufacturing requirements.
The hot working temperature range of Nimonic 75 alloy is 1050-1200℃, and it can be subjected to processes such as forging, rolling and extrusion. During hot working, appropriate preheating and insulation measures should be taken to ensure uniform heating of the material and to avoid thermal cracking.

Cold Working:
Nimonic 75 alloy can be cold worked, including processes such as cold drawing, cold rolling, cold forging and cold extrusion. During cold working, care should be taken to avoid overcooling, which may affect the high temperature properties of the material.

Heat Treatment:
Nimonic 75 alloy can be subjected to a variety of heat treatment processes, including solution treatment, aging treatment and annealing treatment. Among them, the solid solution treatment temperature is 1050-1150°C, the aging treatment temperature is 700-750°C, and the annealing treatment temperature is 850-950°C. In the heat treatment process, attention should be paid to the control of parameters such as heating rate, holding time and cooling method to ensure the stability of material properties.

Machining:
Nimonic 75 alloy requires special measures during machining so as not to affect its high temperature properties and surface quality. It is recommended to use carbide tools or ceramic tools for turning, milling and drilling processes. During machining, care should be taken to control parameters such as cutting speed, feed and depth of cut to avoid overcutting or overheating.

welding:
Nimonic 75 alloy can be subjected to a variety of welding processes, including TIG, MIG and arc welding. During the welding process, a welding material with a similar chemical composition to that of its alloy should be selected to ensure the stability of the performance of the welded joint. Nickel-based alloy wires such as ERNiCr-3, ERNiCrFe-7 and ERNiCrFe-8 are recommended for welding.

The range of products available for Nimonic 75 alloy includes plates, strips, sheets, tubes, rods, etc. The products available for Nimonic 75 alloy include: plates, strips, sheets, tubes, rods, etc. Of these, sheet and strip are the common product forms and are used in the manufacture of high-temperature components and chemical equipment, among others. Sheets are suitable for the manufacture of high-temperature heat exchangers and coolers. Tubes and bars are suitable for the manufacture of high temperature pipes, bearings, springs, etc.

In conclusion, Nimonic 75 alloy is an excellent high-temperature alloy with excellent high-temperature strength, oxidation resistance and corrosion resistance, which is widely used in aerospace, petrochemical, nuclear energy, electric power and other fields. In terms of processing, the alloy can be subjected to hot, cold and heat treatment processes, but special measures are required for machining. For welding, welding materials with similar chemical compositions should be selected. The range of products available includes plates, strips, sheets, tubes, bars, etc., which can be used to manufacture high-temperature components, chemical equipment, heat exchangers, pipes, bearings and springs.

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