Nickel 718 Nickel 718 Supplier Nickel 718, also known as Inconel 718, is one of the higher-strength nickel-base alloys. Its ability to withstand cryogenic temperatures and offer long-term service up to 1200 degrees makes it suitable for use. Frequently produced in a hardened state, Inconel 625 is easily and quickly fabricated. We are a proud Nickel Alloy 718 supplier. If you have any questions about whether or not it’s one of our most sought-after metals, or if it’s right for you, contact us! Nickel 718 Specifications Chemical Composition – The composition is what makes this piece so intriguing. It is roughly 50-55% Nickel. Whereas Chromium, Niobium, and Molybdenum make up the other 25-30%, with the other large section dedicated to Iron. This means that it will have a ton of corrosion resistance without sacrificing hardness. Physical Properties – The iron is what gives it such strength and hardness, although the rest of the chemicals bring down its long-term sustainable temperature. It can maintain its strength and durability in temperatures of 1200 for long periods of time while being machinable and thus sustainable briefly near 1800. Machinability – At a high temperature, it is easily formed into whatever shape you like. However, it is hot annealed only. Cold annealing is allowable for small changes, but it is better to make all of the changes when the nickel is still piping hot. Not sure What You are Looking for? If you are not sure if Inconel 718 is right for you, give us a call! We have a dedicated sales team full of sales experts in Florida and Illinois who know every aspect of the field. If you want to make sure you are receiving the best material for your operation, then call us, and we can talk you through your job and what the next best steps will be. Just call us today at (800) 748-9811 Furthermore, for a prompt and accurate quote, call us today. Call - 800-748-9811 Frequently Asked Questions What are the disadvantages of Inconel 718? + The main disadvantages of Inconel 718 are very high material cost, extreme difficulty in machining (low thermal conductivity and work-hardening tendency destroy tooling quickly), challenging weldability (susceptible to heat-affected zone cracking without proper procedures), and the need for age hardening heat treatment to achieve full strength. Will a magnet stick to Inconel? + Inconel 718 is weakly magnetic in most conditions due to its nickel-iron composition. It is not strongly magnetic like carbon steel. The degree of magnetism depends on heat treatment condition. Why is Inconel so hard to weld? + Inconel 718 is difficult to weld due to susceptibility to strain-age cracking in the heat-affected zone and liquation cracking during welding. Welding in the solution-annealed condition before final aging is recommended. Proper filler selection (ERNiCrMo-3 or similar) and controlled interpass temperatures are critical. Is Inconel harder than stainless steel? + Inconel is harder than most stainless steels. Inconel 718 in the aged condition achieves approximately 36-42 HRC, significantly harder than annealed 304 or 316 (approximately 80-95 HRB). This hardness contributes to its wear resistance and machining challenges. Is Inconel 718 easy to weld? + Yes, Inconel 718 can be welded in Condition A (solution-annealed, not aged). AWS ERNiCrMo-3 (matching Inconel 625 composition) is commonly used as filler. Post-weld heat treatment (solution anneal + age) restores full strength. Pre-weld cleaning to remove all contamination is essential. Can Inconel 718 rust? + Inconel 718 has excellent corrosion resistance -- it does not rust in most environments including saltwater, acids, and high-temperature oxidizing atmospheres. Its high chromium content (17-21%) provides a stable passive film, and its nickel-molybdenum content resists pitting and crevice corrosion. Is Inconel stronger than aluminum? + Inconel is not stronger than aluminum by weight -- aluminum alloys are much lighter (density ~0.098 lb/in3 vs. Inconel 718's ~0.296 lb/in3). Inconel 718 is far stronger by absolute tensile strength (~185 ksi aged) than structural aluminum alloys (~75-85 ksi). Inconels value is its high-temperature performance where aluminum fails. Why is Inconel 718 difficult to machine? + Inconel 718 is among the hardest alloys to machine due to its work-hardening tendency, poor thermal conductivity, and high-temperature strength. Industry practice uses slow cutting speeds, high feed rates, sharp uncoated carbide or ceramic inserts, and aggressive flood cooling. What's stronger than Inconel? + Rene 65, Haynes 282, and CMSX-4 single-crystal alloy are considered stronger than Inconel 718 in terms of creep strength and oxidation resistance at the highest temperatures. However, 718 offers a better combination of weldability and strength for most aerospace and oil and gas applications. Is Inconel rust proof? + Inconel 718 does not rust. Its passive film and high chromium/molybdenum content provide excellent corrosion resistance. In jet engine conditions (high temperature, oxidizing gases), it also forms a stable oxide scale. No rusting occurs in service conditions for which 718 is designed.
