Inconel 718 bar is an aviation-grade superalloy with excellent high-temperature resistance, high strength and fatigue resistance, used to manufacture key aircraft components and meet strict aviation safety requirements.
| Item | Details |
|---|---|
| Product Brief Introduction | Inconel 718 bar is a high-performance nickel-chromium-iron superalloy specially designed for aviation components. It features excellent high-temperature resistance, fatigue resistance, high strength and good machinability, mainly used to manufacture key high-stress, high-temperature components of aircraft, meeting the strict safety and performance requirements of the aviation industry. |
| Core Selling Points | 1. Outstanding high-temperature stability: Can work stably for a long time at 650℃, and maintain excellent mechanical properties under extreme high-temperature conditions of aircraft engines, avoiding component deformation or failure;
2. Super strong fatigue resistance: Adapt to the frequent vibration, alternating load and thermal shock during aircraft flight, greatly reducing the failure rate of key components and ensuring flight safety; 3. High dimensional precision: Strictly control diameter, length, straightness and roundness tolerances, meeting the ultra-precise assembly requirements of aviation components; 4. Excellent corrosion resistance: Resist corrosion of aviation fuel, hydraulic oil, high-altitude ozone and harsh atmospheric environment, extending the service life of aviation components; 5. Good machinability and weldability: Easy to process into complex-shaped aviation parts (such as engine blades, connecting rods), and the welding strength is consistent with the base material, ensuring component integrity; 6. Aviation-grade quality: Comply with strict aviation industry standards, batch performance is uniform, and pass multiple strict quality inspections, ensuring product reliability; 7. Lightweight and high strength: Higher strength under the same weight, helping to reduce aircraft weight, improve fuel efficiency and extend flight range. |
| Standards | 1. International Aviation Standards: AMS 5662 (Aviation Grade Inconel 718 Bar), ASTM B637 (Nickel-Chromium-Iron Alloy Bars for Aviation), DIN 17752 (Aviation-Grade Nickel Alloy Bars);
2. Quality System Certification: AS9100 (Aviation, Space and Defense Quality Management System), ISO 9001, ensuring compliance with aviation industry quality control requirements; 3. Testing Standards: ASTM E8 (Tensile Testing), ASTM E23 (Impact Testing), ASTM E466 (Fatigue Testing), ensuring the accuracy and reliability of product performance testing. |
| Material Grade | 1. Main Grade: Inconel 718 (Aviation Grade);
2. International Designations: UNS N07718 (American Aviation Standard), W.Nr. 2.4668 (German Aviation Standard), EN 2.4668 (European Aviation Standard); 3. Equivalent Grades: GB GH4169 (Chinese Aviation Standard), JIS NW7718 (Japanese Aviation Standard), fully compatible with global aviation manufacturing standards. |
| Chemical Composition (Weight %) | Nickel (Ni): 50.00 – 55.00; Chromium (Cr): c; Iron (Fe): 14.00 – 18.00; Molybdenum (Mo): 2.80 – 3.30; Niobium (Nb): 4.75 – 5.50; Titanium (Ti): 0.65 – 1.15; Aluminum (Al): 0.20 – 0.80; Carbon (C): ≤0.08; Manganese (Mn): ≤0.35; Silicon (Si): ≤0.35; Phosphorus (P): ≤0.015; Sulfur (S): ≤0.015; Copper (Cu): ≤0.30. |
| Mechanical Properties (Aviation-Grade Annealed State) | Tensile Strength: ≥1240 MPa; 0.2% Yield Strength: ≥860 MPa; Elongation (δ5): ≥15%; Reduction of Area (ψ): ≥30%; Hardness (HB): 300 – 380; Impact Toughness (Akv, Room Temperature): ≥60 J; High-Temperature Tensile Strength (650℃): ≥900 MPa; Fatigue Strength (10⁷ Cycles): ≥550 MPa; Thermal Stability: No obvious performance attenuation after 1000 hours of high-temperature aging. |
| Dimensional Tolerance (Aviation-Grade Precision) | 1. Diameter Tolerance: Precision Grade (≤50mm): ±0.015mm; Ordinary Grade (50-100mm): ±0.02mm, ensuring ultra-precise fit with aviation part processing molds;
2. Length Tolerance: Fixed Length (1m-6m): ±0.2mm/m, maximum full-length tolerance ≤0.8mm; customizable length up to 12m, meeting different aviation component processing needs; 3. Straightness: ≤0.15mm/m, full-length straightness error ≤0.4mm/6m, avoiding processing deformation caused by bending; 4. Roundness: ≤0.01mm (diameter ≤50mm); ≤0.015mm (diameter 50-100mm), ensuring uniform diameter and stable processing performance. |
| Why the Aviation Industry Uses This Material | 1. High-temperature adaptability: Aircraft engines, exhaust systems and other components work at high temperatures (up to 600℃+) for a long time, and Inconel 718 bar can maintain stable performance without deformation, which is far superior to ordinary alloy materials;
2. Fatigue resistance meets aviation safety requirements: Aircraft flight is accompanied by frequent vibration, alternating load and thermal shock, and the strong fatigue resistance of this material can ensure the long-term stable operation of key components, avoiding flight safety hazards; 3. Lightweight and high strength: The aviation industry has strict requirements for aircraft weight, and this material has higher strength under the same weight, helping to reduce aircraft weight, improve fuel efficiency and extend flight range; 4. Corrosion resistance fits aviation environment: It can resist the corrosion of aviation fuel, hydraulic oil, high-altitude ozone and harsh atmospheric conditions, avoiding component rust and damage, and reducing maintenance costs; 5. Machinability and batch stability: It is easy to process into complex-shaped aviation parts (such as engine blades, components), and the batch performance is uniform, which is suitable for large-scale production of aviation manufacturers, ensuring production efficiency and product consistency; 6. Compliance with aviation standards: It fully meets the strict quality and performance standards of the aviation industry, can pass aviation product acceptance, and ensures flight safety. |
| Applicable Working Conditions in the Aviation Industry | 1. Aircraft Engine System: Engine turbine blades, compressor disks, connecting rods, valve seats, piston pins (working under high temperature, high pressure, high speed and alternating load);
2. Aircraft Body Structure: Wing structural parts, fuselage frame components, landing gear parts (bearing high load, impact and corrosion resistance); 3. Hydraulic System: Hydraulic cylinder rods, hydraulic valve components (resisting corrosion of hydraulic oil and ensuring stable operation); 4. Exhaust System: Exhaust manifolds, exhaust pipes (withstanding high-temperature exhaust gas corrosion and thermal shock); 5. Avionics Components: High-temperature resistant brackets, connectors (maintaining stable performance in high-temperature and high-vibration environments); 6. Military Aircraft: Key components of fighter jets, transport aircraft and helicopters (adapting to harsh flight conditions such as high speed, high altitude and extreme temperature). |
| Corresponding User Needs in the Aviation Industry | 1. High Safety Demand: Aviation manufacturers need key components to have extremely high reliability and low failure rate, and this product’s fatigue resistance and high-temperature stability can fully ensure flight safety;
2. High Precision Demand: Aviation components have ultra-strict assembly requirements, and the high dimensional precision of the product can meet the precise fit needs of parts, avoiding assembly errors; 3. High Performance Demand: With the upgrading of aircraft (high speed, long range, heavy load), manufacturers need materials with high strength, high temperature resistance and lightweight to improve aircraft performance; 4. Batch Stability Demand: Uniform chemical composition and mechanical properties of the product can meet the large-scale mass production needs of aviation manufacturers, ensuring the consistency of aircraft components; 5. Standard Compliance Demand: The product meets international aviation standards and industry certifications, ensuring that components can pass aviation product acceptance and market access; 6. Cost Control Demand: The long service life of the product reduces the frequency of component replacement and maintenance, indirectly reducing the production and maintenance costs of aviation manufacturers. |
| Common Related Products in the Aviation Industry | 1. Inconel 718 Aviation Forgings: Used to manufacture large and complex aviation components such as engine disks, landing gear shafts and fuselage frames;
2. Inconel 718 Aviation Welding Wire: Used for welding Inconel 718 bar components, ensuring welding strength and consistency with the base material, meeting aviation welding standards; 3. Inconel 718 Aviation Tube: Used for aircraft engine cooling pipes, hydraulic pipelines and exhaust pipes; 4. Inconel 718 Aviation Sheet/Plate: Used for aircraft wing skin, engine covers and body structural parts; 5. Inconel 718 Aviation Fasteners: High-precision bolts, nuts and screws used to connect key aviation parts, ensuring connection strength and corrosion resistance; 6. Inconel 718 Precision Machined Parts: Finished aviation parts directly processed from Inconel 718 bar, such as turbine blades, valve stems and connecting rods, which can be directly assembled and used. |
| Supplementary Information (For Aviation Manufacturers) | 1. Aviation-Grade Testing Reports: Provide complete test reports, including material test report (MTR), mechanical performance test report, fatigue test report and dimensional precision test report, meeting aviation product acceptance requirements;
2. Machining Guidance: Provide professional aviation-grade machining parameters (cutting speed, feed rate, tool selection) to help manufacturers reduce processing difficulty and improve processing precision; 3. Material Traceability: Establish a full-process traceability system, from raw material procurement to finished product delivery, with complete records, which can be queried and verified, meeting the aviation industry’s quality traceability requirements; 4. Packaging Protection: Adopt aviation-grade anti-corrosion, moisture-proof and anti-collision packaging, each bar is separated by a protective sleeve to avoid scratches during transportation, ensuring product surface quality; 5. Technical Support: Provide professional aviation technical guidance, solve problems encountered in processing, welding and assembly, and assist manufacturers in optimizing production processes; 6. Delivery Guarantee: Short delivery cycle, support urgent aviation orders, ensure the production progress of aviation manufacturers. |