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To: Boplicity who wrote (12802)	4/4/2004 6:54:49 PM
From: Sig	Read Replies (2) \| Respond to of 13815

<<I want to attach a copper tube to a piece of steel.>>> You can solder to the steel, since lead or solder is used in auto body repair. Have to have the steel clean and use acid flux. So it sticks better. The copper part is no problem. For stronger joint use silver solder which also melts at a low temp @430 degrees so you could use a propane torch with MAPP gas. I've never done it but should be no problem. The parts should fit very close (<.006) so solder will be sucked into the joint. You do get electrolytic action at the joint which will eat away the steel in a few years. My steel well pipes threaded to a brass valve will last 4 or 5 years before it leaks Good luck Sig