Discussion on Inconel A286 Stainless Steel Material Machining
This is a discussion on Inconel A286 stainless steel material machining. Here is a summary of some key points:
Material properties: Inconel A286 is a high-strength nickel-based alloy with excellent high-temperature performance and corrosion resistance. However, it can be difficult to machine, with some describing it as "bubble gum mixed with pea gravel".
Machining challenges: The discussion mentioned that A286 may work harden during machining, consume tools quickly, and may deform when large amounts of material are removed.
Speeds and feeds: It is recommended to reduce cutting speeds and increase feed rates when machining A286 to reduce tool wear and workpiece deformation.
Coolant: Using high-pressure coolant, especially when cutting, can extend tool life and improve machining efficiency.
Tool selection: Using sharp tools with PVD coatings can improve machining performance. Some users recommend using ceramic tools for roughing.
Material cost: A286 is relatively expensive, with one user citing a price of $16.80 per foot for 1/4 diameter A286 with a 4-week lead time.
Machining tips: Some users shared their machining experiences, such as using shallow depths of cut, high feed rates, and high RPMs to increase tool life.
Material comparison: Compared to other difficult materials, such as Inconel 718 or Hastelloy, A286 is challenging but not unmachinable.
Machining strategies: Some users recommend using a semi-finishing tool for a single run before finishing to avoid the "rubbing" effect of repeated machining.
Material supply: A286 is available in a variety of different supply states, such as annealed, solution treated, etc., and different states may affect machining performance.
Overall, while Inconel A286 may present some challenges when machining, it can still be effectively machined with appropriate machining strategies and tool selection. In addition, the high cost and difficulty of machining this material also reflect its value in specific applications.
