Applied Process has been a technology leader in the heat treating industry since 1978. AP and its affiliated companies use properly applied Austempering technologies to solve tough engineering problems. AP also continues to work on developing even more efficient Austempering systems. We have 3 locations to serve you and an R & D department to assist with your heat treating needs. Applied Process, Oshkosh, WI is home to the world's largest Austempering furnace in the world.