Properties, applications and performance of K4169 high-temperature alloy
Gnee Steel
Properties, applications and performance of K4169 high-temperature alloy
K4169 alloy (also known as cast Inconel 718 or IN718C) is a precipitation-hardening nickel-based superalloy known for its excellent high-temperature strength, corrosion resistance and outstanding performance in low-temperature environments.
Gnee Steel
What are high-temperature alloys?
High-temperature materials are substances that maintain stability and excellent mechanical properties at high temperatures (typically exceeding 2300 K), making them suitable for thermoelectric applications where other materials might not be able to maintain stability.
K4169 superalloy represents a significant advancement in materials science, particularly suitable for applications requiring superior performance under extreme conditions. This nickel-based superalloy has gained widespread recognition in industries where reliability and durability are paramount. The chemical composition of K4169 is primarily composed of nickel, chromium, iron, niobium, molybdenum, and titanium, with precise control over each element contributing to its exceptional properties.
The mechanical properties of K4169 make it especially important in high-stress environments. This alloy exhibits excellent tensile strength and creep resistance at high temperatures, maintaining structural integrity even at temperatures up to approximately 700°C. Even after prolonged exposure to high temperatures, its yield strength remains significantly higher than many conventional alloys. Furthermore, K4169 demonstrates superior fatigue resistance, crucial for components subjected to cyclic loading. The material's hardness can be further enhanced through appropriate heat treatment processes, allowing for customization to specific application requirements.
Chemical composition of K4169 alloy (wt.%).
| C | Fe | Cr | Mo | Nb | Ti | Al | Ni |
|---|---|---|---|---|---|---|---|
| 0.04 | 18.4 | 18.8 | 3.0 | 5.0 | 0.96 | 0.6 | Bal. |
Thermal stability is another key characteristic of K4169. This alloy retains its microstructure and mechanical properties even after prolonged exposure to high temperatures, minimizing the risk of phase transformations or the precipitation of harmful compounds. This thermal stability ensures consistent performance of components made from this material throughout their service life. Furthermore, the alloy exhibits a relatively low coefficient of thermal expansion, reducing thermal stress during temperature cycling and improving dimensional stability.
Corrosion resistance is a significant characteristic of the K4169 alloy, especially in oxidizing environments. The stable chromium oxide layer that forms on its surface provides oxidation protection at high temperatures. The alloy also demonstrates good resistance to stress corrosion cracking in chloride-containing environments, enabling its application in more corrosive environments. These corrosion resistance properties significantly extend the service life of components exposed to harsh working environments.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of K4169 stainless steel strip/coil available for fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), Chemical Composition Certificate, and Mechanical Properties Certificate.
✅ Value-added services: Slitting, Cutting, Polishing, Surface Treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export documentation.
Email: ss@gneemetal.com
Gnee Steel is a supplier of K4169 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with K4169 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells K4169, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
