----- Original Message ----- From: "Gary Graunke" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, October 03, 2002 6:43 PM Subject: Re: coupler material
> Incidently, I used type 6061 T561 aluminum for the adaptor plate. It has > worked well for Victor, but the machinist suggested that type 7075 would > have been a more optimal choice. I was hoping to get some input from the > list before starting, but, unfortunately, it was down. So I'll rely on their > experience, but it would be nice to add this to the wealth of information > that is this list. 7075 is an aircraft structural alloy. It has high strength and hardness, good machineability. It has poor weldability and poor resistance to corrosion. I would be a bit concerned about its poor resistance to corrosion in your application and wouldn't use it for that reason 6061 has excellent resistance to corrosion and is a good choice for your adapter plate. Tom Shay
