EN
K418 Master Alloy Bar Manufacturer | Industrial Grade 713C Rod
Premium K418 cast superalloy bar (equivalent to Inconel 713C / IN713C) as high-quality master alloy for turbochargers. Nickel-based precipitation-hardened equiaxed crystal alloy delivering excellent creep strength, thermal fatigue resistance, and oxidation resistance below 900°C. Ideal feedstock for precision casting of turbocharger turbine wheels and high-temperature components.
- Overview
- Specification
- Applications
- Company Profile
- FAQs
- Recommended Products
Introduction to K418 Master Alloy Bar
K418 (also designated K18) is a cobalt-free nickel-chromium-molybdenum-aluminum-titanium superalloy strengthened by γ′ (Ni₃(Al,Ti,Nb)) precipitation. The master alloy bars are vacuum-melted to achieve high purity, uniform composition, and low impurity levels, ensuring reliable performance when remelted into precision castings.
Typical product forms are round bars/rods with diameters commonly ranging from 40 mm to 175 mm and lengths up to 1200 mm. The alloy is normally used in the as-cast condition after appropriate heat treatment and offers a favorable combination of high-temperature strength, oxidation resistance, and lower density compared with many cobalt-containing alternatives. It is widely specified under Chinese standards (HB, GJB) and corresponds to AMS 5391 for Inconel 713C.
Product Features of K418 Master Alloy Bar
√Excellent creep strength and stress-rupture performance below 900°C
√Superior thermal fatigue resistance under repeated start-stop thermal cycles
√Outstanding oxidation and hot corrosion resistance due to balanced chromium content
√Cobalt-free composition for lower density and reduced material cost
√Good castability and fluidity suitable for complex thin-walled turbocharger components
√High cleanliness master alloy bars optimized for vacuum induction remelting and investment casting
√Consistent chemical composition ensuring reliable mechanical properties in final castings
Chemical composition%
Applications of K418 Master Alloy Bar Manufacturer
K418 master alloy bars and industrial-grade 713C rods are the preferred feedstock for manufacturing critical hot-section parts operating under high stress and temperature:
1.Aerospace and aero-engine turbine working blades, guide vanes, and integral cast turbines
2.Industrial gas turbine (IGT) hot-end components and compressor blades
3.Automotive and diesel engine turbocharger rotors and turbine wheels
4.Missile and rocket engine integral turbine rotors and nozzles
5.High-temperature molds, dies, and other precision castings requiring long-term thermal stability
CHANGZHOU DLX ALLOY CO., LTD operates as a high-precision node in the international superalloy supply chain, specializing in the synchronization of Chinese manufacturing power with global regulatory standards. Since 2002, our 12,000 m² VIM center has prioritized the "Compliance First" philosophy required for cross-border engineering trade. We recognize that for our partners in the US and Europe, material reliability is inseparable from regulatory transparency. By integrating aerospace-grade vacuum melting with a comprehensive certification ecosystem (RoHS/SGS), we provide global manufacturers with a stable, risk-free material foundation, empowering them to innovate with total metallurgical confidence.
FAQs:
1.What is K418 master alloy bar?
K418 is a nickel-based precipitation-hardened equiaxed-grain cast superalloy supplied as master alloy bars/rods. It is the Chinese equivalent of Inconel 713C (INCO 713C) and is used as high-purity feedstock for remelting and precision investment casting of high-temperature components.
2.What are the main advantages of industrial-grade 713C rod?
It offers excellent creep strength, thermal fatigue resistance, and oxidation resistance below 900°C, a cobalt-free composition for lower cost and density, and consistent chemistry that ensures reliable casting quality.
3.What diameters and lengths are typically available for K418 master alloy bars?
Common diameters range from approximately 40 mm to 175 mm, with lengths up to 800–1200 mm depending on the size. Custom dimensions can be produced to meet specific casting requirements.
4.In which industries is K418 / 713C primarily used?
It is widely applied in aerospace (turbine blades and vanes), industrial gas turbines, automotive turbochargers, and other high-temperature precision casting applications.
5.Is heat treatment required for K418 components?
The master alloy is normally used in the as-cast condition after standard solution and aging treatments (e.g., 1180°C + 930°C). Hot isostatic pressing (HIP) can further improve density, plasticity, and fatigue performance when required.
