1. Definition of NS-35 alloy
NS-35 alloy is a nickel-based superalloy with excellent corrosion resistance and high temperature resistance. It is composed of nickel, chromium, iron, molybdenum, cobalt, aluminum, titanium and other elements, and is a multi-element alloy.
Second, the chemical composition of NS-35 alloy
The chemical composition of NS-35 alloy is as follows:
- Nickel (Ni): balance
- Chromium (Cr): 21.0-23.0%
- Iron (Fe): ≤3.0%
- Molybdenum (Mo): 9.0-11.0%
- Cobalt (Co): 1.0-2.5%
- Aluminum (Al): 1.0-2.5%
- Titanium (Ti): 0.05-0.5%
- Manganese (Mn): ≤0.50%
- Silicon (Si): ≤0.50%
- Carbon (C): ≤0.05%
- Phosphorus (P): ≤0.015%
- Sulfur (S): ≤0.015%
3. Production standard of NS-35 alloy
The production standards of NS-35 alloy include ASTM B435 and AMS 5537, etc. These standards specify the requirements and regulations for the chemical composition, mechanical properties, dimensions and allowable deviations, inspection and testing, marking and packaging of alloys.
4. Corrosion resistance of NS-35 alloy
NS-35 alloy has excellent corrosion resistance and is especially suitable for applications in corrosive environments such as strong acids, strong alkalis and seawater. It can resist the erosion of various corrosive media such as chloride corrosion, sulfuric acid corrosion, hydrochloric acid corrosion, and nitric acid corrosion, and exhibits excellent corrosion resistance.
5. High temperature resistance of NS-35 alloy
NS-35 alloy has excellent high temperature resistance, and can still maintain its mechanical properties and chemical stability under high temperature, high pressure and strong corrosive environment. Its operating temperature range is generally between 800°C and 1100°C, and it is suitable for applications in high temperature, high pressure, and corrosive environments such as petrochemical, aerospace, and nuclear energy.
6. Typical application range of NS-35 alloy
NS-35 alloy is widely used in the manufacture of equipment and components under high temperature, high pressure and corrosive environment in petrochemical, aerospace, nuclear energy and other fields, such as reactors, heat exchangers, valves, pump bodies, bearings, valves, burners, Nozzles etc.
7. Hot working of NS-35 alloy
NS-35 alloy can be processed by hot working methods, including hot rolling, forging, heat treatment, etc. The hot rolling temperature is generally between 1150°C and 950°C, and the forging temperature is generally between 1150°C and 950°C. Heat treatment methods include solution treatment and aging treatment.
8. Cold working of NS-35 alloy
NS-35 alloy can be processed by cold working methods, including cold rolling, cold drawing, cold die forging, etc. The temperature of cold rolling is generally carried out at room temperature, and the temperature of cold drawing and cold die forging is generally carried out below 800°C.
9. Heat treatment of NS-35 alloy
The heat treatment methods of NS-35 alloy include solution treatment and aging treatment. The solution treatment temperature is generally between 1100°C and 1150°C, and the holding time is generally 1-4 hours, and then rapidly cooled in water or air. Aging treatment is generally carried out between 800°C and 900°C, and the holding time is generally 8-24 hours, and then cooled in the air.
10. Machining of NS-35 alloy
NS-35 alloy has high hardness and cutting difficulty, so it is necessary to pay attention to selecting appropriate cutting tools and cutting parameters in machining to ensure machining efficiency and machining quality. It is recommended to use cemented carbide tools and hydraulic oil for cooling.
11. Welding of NS-35 alloy
NS-35 alloy can be welded by TIG, MIG, arc and other welding methods, but it is necessary to pay attention to the selection of appropriate welding materials and welding processes to avoid defects such as cracks and pores. It is recommended to use nickel-based welding wire such as AWS A5.14 ERNiCrMo-14 for welding.
12. Recommended welding materials for NS-35 alloy
Recommended welding materials for NS-35 alloy include AWS A5.14 ERNiCrMo-14, AWS A5.11 ENiCrMo-14, etc. These welding consumables have excellent welding performance and corrosion resistance, and can meet the welding requirements of NS-35 alloy.
Thirteen, NS-35 alloy material specific gravity
The material specific gravity of NS-35 alloy is about 8.22 g/cm³.
Fourteen, NS-35 alloy product range available
The product range available for NS-35 alloy includes plates, sheets, strips, pipes, rods, wires, etc. Its size and specifications can be customized according to customer needs.
In short, NS-35 alloy is a nickel-based superalloy with excellent corrosion resistance and high temperature resistance, and is widely used in the manufacture of equipment and components in petrochemical, aerospace, nuclear energy and other fields. For the production and use of NS-35 alloy, it is necessary to strictly follow the relevant standards and specifications, including requirements and regulations on chemical composition, mechanical properties, dimensions and tolerances, inspection and testing, marking and packaging. In the process of processing and welding, it is necessary to pay attention to the selection of appropriate processes and materials to ensure product quality and performance. In conclusion, NS-35 alloy is an excellent material for high temperature, high pressure and corrosive environments, and has broad application prospects and market demands.
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Post time: Aug-26-2023
