1.4958
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2.4668 is a Fe-Ni-Cr based precipitation hardening deformable high-temperature alloy, corresponding to UNS N07718 in the US and GH4169 in China. Nickel-based alloy is a high-performance material widely used in various engineering projects in extreme environments.
Product name：
Inconair
Material：
NCF750
Warehouse：
Tianjin
Surface treatment：
Pickled/bright/black etc.
Keyword：
1.4958
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Details description
Nickel-based alloy is a high-performance material widely used in various engineering projects in extreme environments. Composed of nickel and other metallic elements such as chromium, molybdenum, and aluminum, it offers exceptional heat and corrosion resistance and mechanical strength, making it particularly suitable for use in high-temperature, high-pressure, and highly corrosive environments. Nickel-based alloy pipes, engineered from this material, offer long-term reliability and durability, effectively reducing maintenance costs and increasing equipment efficiency and service life, making them indispensable components in modern industry.
Chemical Composition
Carbon C≤0.08, Chromium Cr content 17.0～21.0, Nickel Ni content 50～55, Cobalt Co≤1.00, Molybdenum Mo 2.8～3.30, Aluminum Al 0.20～0.8, Titanium Ti 0.65～1.15, Iron Fe balance, Niobium Nb 4.75～5.50, Boron B≤0.006, Manganese Mn≤0.35, Silicon Si≤0.35, Sulfur S≤0.015, Copper Cu≤0.30, Phosphorus P≤0.015, Magnesium Mg≤0.01.
Performance Characteristics
Wide temperature adaptability: This material ensures exceptional overall performance within a broad temperature range from -253°C to 700°C. Below 650°C, its yield strength is superior compared to other high-temperature alloys that undergo deformation.
Outstanding mechanical properties: It exhibits remarkable resistance to fatigue, as well as excellent tensile, creep, and fracture strength. After processing, its tensile strength can reach up to 1700MPa, with a maximum hardness of 450HB.
Exceptional corrosion resistance: The material is highly resistant to a variety of corrosive environments, including acids, alkalis, and salts. Its inherent chemical stability and dense oxide coating effectively protect it in harsh conditions, significantly extending its lifespan.
Excellent machinability and weldability: It can be easily shaped into different forms, such as rods, plates, tubes, strips, and wires. It is compatible with arc welding, plasma welding, and other welding methods, and shows no tendency to crack after welding.
Typical Application Scenarios
Aerospace field: As an ideal material for aircraft engine components, it is widely used in the manufacture of key components such as discs, rings, casings, blades, shafts, fasteners, and elastic elements.
Nuclear Energy field: With its excellent high-temperature and radiation resistance, this material is ideal for the manufacture of core equipment such as reactor pressure vessels and steam generators.
Petroleum Industry field: This material can operate stably in oil extraction and processing environments and is suitable for the manufacture of oil well pipes, refining equipment, and pipelines, capable of withstanding the harsh conditions of high temperature, high pressure, and severe corrosion.
Technical Parameters
The density is approximately 8.24g/cm³, and the melting temperature range is 1260～1320℃.
Processing and Heat Treatment Process
Hot working temperatures range from 1120-900°C, and rapid cooling methods such as water quenching can be used. Annealing should be performed immediately after hot working. Cold working is required after solution treatment, and the work hardening rate is higher than that of austenitic stainless steel. Intermediate annealing should be performed during cold working. Different solution treatments and aging processes impart different performance characteristics to the material. Due to the low diffusion rate of the γ” phase, prolonged aging can effectively improve the alloy's mechanical properties.
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Application fields
Petrochemicals
Petrochemicals
Aerospace
Aerospace
Energy equipment
Energy equipment
Oil/gas/water pipelines
Oil/gas/water pipelines
Building construction
Building construction
Dredging & piling works
Dredging & piling works
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