Brazing Copper To Steel Hvac

What is the proper solder brazing rod and flux to use when making this connection.

Brazing copper to steel hvac.

The brazing temperatures for most of the brazing alloys used to joint copper piping systems bcup and bag alloys see below are roughly between 1 150 f 621 c and 1 550 f 843 c. The percentage is the percentage of silver content in the rod. I hear standard 15 silverphos is not a good choice. I m a residential hvac guy.

Thank for you. Hot tips for copper brazing. I also give some tips on how to braze a copper fitting and ref. One of my friends owns a motel and asked me to replace the compressor in his pepsi machine for him.

I see the discharge line is steel brazed or soldered to the copper compressor discharge fitting. My paperback and e book. In this video i go over the oxy acetylene torch tips i use along with the gas pressures i use. Step by step tutorial on how to braze copper pipe like a pro.

The braze is what is melted by the torch to join two metals. The clearance for allowing filler metal penetration in small to medium diameter pipes should not be more than 0 002 to 0 003 inches. Brazing rods look like straightened metal coat hangers and like solder they become stronger as the percentage of silver they contain increases. The only real reason to use lower silver levels is the cost and the difference can have many techs and owners wondering what the difference is.

Both oxygen free and oxygen bearing copper can be used for brazing work. Lap joints work best with an annealed copper brazed joint. The most commonly used brazing filler metal types used to join copper tube and fittings fall into two distinct categories.