Thanks all! 655 bronze seems like what I am looking for and "silicon" was all I was searching. Here are some pics of our problem. Notice the key way offset looking down at top of
rudder, then and bend in rudder with spits in the
wood at the bottom. Seems this rudder took a very hard hit on the starboard side at some time. If I am thinking correct also explaining the extreme
weather helm we experiance on starboard tack.