Differences between Inconel 625 Alloy Rod and Inconel 718 Round Bar
Alloy 625 rods are mainly nickel-based, while Alloy 718 rods are mainly nickel + cobalt (Ni + Co). The 718 rods use nickel + cobalt, which makes them harder and stronger. Alloy 625 rods have higher chromium and molybdenum content, so they are more corrosion resistant.
What is the composition of INCONEL 718 Round Bar?
Inconel 718 Round Bar is a nickel-chromium alloy bar that contains up to 55% nickel. It also contains 17% chromium, 4.9% niobium, at least 6.6% iron, as well as aluminum, boron, carbon, cobalt, copper, manganese, phosphorus, lead, sulfur and silicon.
Chemical Composition
While Inconel 625 and Inconel 718 share many common properties, they also have distinct differences that accommodate unique use cases.
Inconel 625 Bar
Inconel 625 bar is composed primarily of nickel and chromium. It also contains molybdenum and niobium, which give it high tensile strength and strong corrosion resistance. It maintains its strength in environments up to 2,000°F (about 1047°C) and has good resistance to oxidation and carburization.
Inconel 718 Alloy Bar
Inconel 718 alloy rod generally has a similar chemical composition to Inconel 625 rod, but has slight differences. It is characterized by its ability to precipitation harden without post-weld cracking. It also resists creep rupture at temperatures up to 1,300°F (725°C).
Formability Differences
Both Inconel 625 Bar and Inconel 718 Alloy Bar have good formability due to the high nickel content in the alloy. Both can be stamped and cold formed. However, their formability differs due to their unique properties.
Inconel 625 Bar
Inconel 625 Bar has significantly improved strength in the annealed state, making it particularly suitable for corrosion resistance, including seawater environments.
Inconel 718 Alloy Round Bar
Inconel 718 Round Bar has good resistance to post-weld cracking or strain-age cracking during heat treatment, allowing it to maintain high strength in the annealed state while also having excellent formability.
Industries where Inconel 625 Rod and Inconel 718 Round Bar are commonly used
Inconel 625 Rod and Inconel 718 Alloy Bar are used in a wide range of industries, but they hold a prominent position in specific areas due to their unique properties.
Inconel 625 Rod
Inconel 625 Rod is widely used in the marine industry due to its excellent corrosion resistance, especially in sea salt environments. This includes the needs of the oil and gas industry, such as downhole drilling applications such as subsea pipeline tiebacks.
Inconel 718 Rod
Inconel 718 Rod has made great progress in the aerospace industry. It is also conducive to the manufacture of automotive engine components due to the good formability given by the nickel content.
Gnee Steel is a supplier of Inconel 625 Alloy Rod And Inconel 718 Round Bar, covering tubes: Seamless tubes: Size: 4 - 219 mm; Thickness: 0.5 - 20 mm; Welded tubes: Size: 5.0 - 1219.2 mm; Thickness: 0.5 - 20 mm, Plates: Plate thickness 0.1 to 100 mm; Plate width 10-2500 mm, Strips, Alloy Round Rod Size: Diameter 3-800 mm;, Flat Bar Size: Thickness 2-100 mm; Width: 10-500 mm, Hexagonal Bar Size: 2-100 mm;, Wire and Extruded Profiles. We work with steel mills to provide customers with 625 alloy that meets or exceeds many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Inconel 625 Alloy Rod And Inconel 718 Round Bar, Tubes, Pipes, Plates, Strips, Plates, Round Bars, Flat Bars, Forged Billets, Hexagons, Wires and Extruded Profiles. Feel free to contact us for a quote at ss@gneesteel.com
