Inconel 713LC Nickel Alloy
General Technical Characteristics
Inconel 713LC is a heat-resistant cast nickel-based superalloy designed for manufacturing components operating at high temperatures and under significant mechanical loads. The material belongs to the precipitation-hardened alloy group and is characterized by high strength, creep resistance, and oxidation resistance under gas turbine operating conditions.
The chemical composition of Inconel 713LC includes nickel as the base element, along with chromium, molybdenum, aluminum, niobium, and titanium. These alloying elements contribute to structural stability and help maintain the material’s performance characteristics at elevated temperatures.
Chemical composition, %:
- Nickel (Ni) — balance;
- Chromium (Cr) — 11–13%;
- Molybdenum (Mo) — 3.8–5.2%;
- Aluminum (Al) — 5.5–6.5%;
- Niobium (Nb) — 1.5–2.5%;
- Titanium (Ti) — 0.4–1.0%;
- Carbon (C) — 0.03–0.07%;
- Zirconium (Zr) — 0.05–0.15%;
- Boron (B) — 0.005–0.015%.
The typical mechanical properties of Inconel 713LC at room temperature depend on the material condition and manufacturing process. Cast material generally exhibits an ultimate tensile strength of approximately 830–900 MPa, a yield strength of around 700–750 MPa, and an elongation of approximately 6–10%. Actual values depend on heat treatment and the requirements of the applicable material specification.
Applications
The heat-resistant Inconel 713LC alloy is widely used in the aerospace industry, power generation, and gas turbine equipment manufacturing. Its primary applications include the production of cast turbine blades, nozzle blades, hot-section turbine components, and other parts exposed to prolonged high-temperature conditions.
The material is used in the manufacture of aircraft and industrial gas turbine engines, where high strength, creep resistance, and oxidation resistance are essential. This nickel-based alloy is suitable for critical components operating under combined thermal and mechanical loads.
Features
A key feature of Inconel 713LC is its lower carbon content compared with Inconel 713C. This modification can improve certain characteristics of the material during the repair and welding of cast components, although welding requires specialized procedures and carefully controlled conditions.
The main advantages of Inconel 713LC include high-temperature strength, good long-term strength, oxidation resistance, and the ability to retain its operating properties at elevated temperatures. The alloy is primarily used for producing complex-shaped castings, including components manufactured using vacuum casting processes.
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