We have developed a range of cadmium free alloys keeping in view the requirements of our end users, which mainly consist of food and beverage industry. These alloys are suitable for use on most ferrous and non-ferrous materials. We offer numerous material compositions for general purpose and specialty applications which are available in rods, strip, wire, powder, paste, preforms, clad tri-metal products and flux-cored wire and rods.
ALFA 309B is suitable for furnace brazing in a protective atmosphere. It is very fluid and can be used on copper or copper alloys, stainless steel, nickel based alloys and carbon steel. ALFA - 306 is used for brazing monel, silver and nickel alloys. ALFA - 305 may be used where the use of brazing alloy containing cadmium as for food handling or process equipment is objectionable. It is also used in electrical industry. Due to broad melting range it is a better filler metal for filling wide joint clearances or forming large fillets. ALFA-309 is a general purpose brazing alloy for use at higher brazing temperatures. It is an excellent filler metal for brazing brass parts. ALFA-308A is popular cadmium free filler metal particularly for brazing in "Traction Motors" ALFA-307 is similar to ALFA-309. It is also used for brazing of ferrous and non ferrous metals. ALFA-304 has a wide melting range and used in brazing of copper based alloys, monel, nickel and mild steel. ALFA-308 is a filler metal with intermediate temperature for use in brazing of ferrous and non ferrous metals. ALFA-303 has moderate ductility which limits the joint design and application. It has good wetting characteristics and is free flowing. ALFA-307C is an economical filler metal used for brazing ferrous metals, stainless steel, copper and brass. It is used in mechanical, electrical, refrigeration industries and for brazing musical instruments.
Silver Brazing Alloys With Tin
ALFA - 306Sn is similar to ALFA 309B in its applications . The tin content help in wetting the surface of stainless steel, carbon steel and nickel base alloys. It is specially used for vacuum applications. ALFA - 311Sn is a low melting filler metal and does not contain cadmium. It is ideal for furnace brazing. It is used by the dairy and food industry where cadmium free joints are required. This brazing alloy is less prone to cause stress cracking on stainless steel and some nickel alloys. After brazing it gives a closer match with whitish metals such as stainless steel. ALFA - 310Sn may be used on any nickel and nickel alloys, copper and copper alloys and steels. ALFA-309Sn is a low temperature cadmium free alloy with free flowing characteristics. ALFA-304Sn is a free flowing alloy for ferrous, non ferrous and dissimilar joints. ALFA-311SnB is free flowing cadmium free filler metal used with ferrous and non ferrous base metals. ALFA-307Sn is used for assembly of copper tubes in the refrigeration industry and on equipments and containers in the food industry. Presence of tin improves its fluidity and it has good wetting properties. ALFA-303Sn is a free flowing alloy for ferrous, non ferrous and dissimilar metals with good fluidity. ALFA-307SnA is economical filler metal and is useful on ferrous and non ferrous joints which do not require impact strength or high ductility. ALFA-302 is used in brazing operations where brazing and heat treatment of steels is simultaneously done.