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K4169 Master Alloy Bar for Oil and Gas | 718 Casting Superalloy Rod
Premium K4169 master alloy bar and 718 casting superalloy rod designed for oil and gas applications. High-strength nickel-based precipitation-hardening alloy with excellent corrosion resistance, high-temperature performance up to 650–700°C, and superior castability. Ideal for critical structural components in harsh petrochemical and energy environments.
- Overview
- Specification
- Applications
- Company Profile
- FAQs
- Recommended Products
Introduction to K4169 Casting Superalloy Rod
K4169 is a conventional equiaxed casting nickel-chromium-iron superalloy developed for components requiring high strength and good fabricability below approximately 650–700°C. Strengthened primarily by the body-centered tetragonal γ″ phase with supporting γ′ precipitates, the alloy offers excellent tensile properties, corrosion resistance, radiation resistance, and resistance to strain-age cracking.
Produced as casting superalloy bars, K4169 material is suitable for further machining into bolts, studs, nuts, and other fasteners that must maintain integrity under elevated temperatures and corrosive environments. The alloy’s balanced composition ensures good weldability and casting performance while delivering reliable mechanical properties after standard heat treatment.
Product Features of K4169 Casting Superalloy Rod
√Superior Sour Gas Resistance: Specifically alloyed to resist sulfide stress cracking (SSC) and hydrogen embrittlement in H2S-rich environments.
√High-Pressure Structural Integrity: Maintains a yield strength of ≥725MPa, providing the safety margins required for API 6A high-pressure wellhead tools.
√VIM-Enhanced Purity: Advanced vacuum induction melting reduces oxygen and nitrogen levels (O≤15ppm), ensuring defect-free castings for high-pressure seals.
√Excellent Post-Cast Weldability: Niobium-stabilized matrix allows for the successful repair and assembly welding of large valve manifolds.
√Broad Thermal Range Resilience: Maintains mechanical toughness from cryogenic subsea temperatures up to 650°C gas injection environments.
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Applications of K4169 Casting Superalloy Rod Manufacturer
K4169 casting superalloy bars are widely used where high-strength fasteners and precision components must perform reliably under elevated temperatures and corrosive conditions:
- Aerospace engine fasteners, bolts, studs, and structural hardware
- Combustion chamber pre-diffusers, load-bearing rings, and casings
- Turbine-related components and structural parts operating below 650–700°C
- Industrial gas turbine and power generation fasteners
- High-performance fasteners in chemical processing and energy equipment requiring corrosion resistance
- Machined components for aerospace and high-temperature structural applications
CHANGZHOU DLX ALLOY CO., LTD functions as a high-security metallurgical node for the global energy infrastructure, emphasizing the "Corrosion Lifecycle" of materials in extreme high-pressure environments. Since 2002, our 12,000 m² facility has moved beyond standard manufacturing by establishing a dedicated Deep-Water Metallurgical Archiving system. For critical alloys like K4169 (Cast 718), we don't just record chemical batches; we maintain a comprehensive performance archive that correlates VIM melting parameters with real-world sulfur-resistance and long-term chloride stability data. We recognize that in the oil and gas sector, the true value of a master alloy is proven years after installation at the seabed. By providing our partners with a transparent "Metallurgical Fingerprint" and data-backed lifecycle assurance, we empower energy engineers to deploy subsea valves and downhole tools with the highest degree of corrosion-resistance certainty.
FAQs:
1.What temperatures can K4169 superalloy bars withstand?
K4169 offers excellent mechanical properties and stability in the medium-to-low temperature range, typically up to approximately 650–700°C, making it suitable for many aerospace and industrial fastener applications.
2.Why choose K4169 bars for fasteners?
The alloy provides a strong combination of high tensile and yield strength, good ductility, corrosion resistance, and weldability at a competitive factory price, ideal for machining into reliable high-temperature fasteners.
3.What heat treatment is recommended for K4169 casting bars?
Standard solution treatment followed by aging is commonly applied to achieve optimal precipitation of the strengthening γ″ and γ′ phases and the desired balance of strength and ductility.
4.Are these bars suitable for aerospace fasteners?
Yes. K4169 is extensively used in aerospace engine structural components and is well-suited for high-strength fasteners operating in the alloy’s recommended temperature range.
