Alloy Details
Daily fabricated silver market price for
9/3/2010
$23.484/troy oz.
Search Brazing Alloy References
Showing Results 61 - 70 of 83
SILVALOY 25 is historically a modification of SILVALOY® 30 with a further reduction in silver content resulting in a higher melting point and a longer melting range (250ºF). It is similar to SILVALOY 30 in performance although it contains less silver. Its broader melting range is helpful where clearances are not uniform. During melting, SILVALOY 25 passes from the solid state to a mushy or plastic state and progressively to a liquid. If heated slowly through this plastic state (1125-1375F) the liquid portion may flow from the solid portion. This causes a separation of the alloy into a low temperature melting (fluid) portion and a high temperature melting (solid) portion. This phenomenon is called liquation. The high temperature melting portion will melt only above the liquidus temperature of SILVALOY 25. For this reason, SILVALOY 25 should be heated rapidly through the melting range. Typical applications are the joining of ferrous, nonferrous and dissimilar metals and alloys with close joint clearances. SILVALOY 25 is used for brazing steel, stainless steel, copper, copper alloys, nickel, nickel alloys or combinations of these metals. |
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SILVALOY A40T is a good general purpose, low melting, cadmium-free alloy, often selected for its low temperature, wetting and good flow. SILVALOY A40T has a lower brazing temperature with a relatively narrower melting range than other cadmium-free classifications with similar silver content. It does not liquate excessively if heated slowly through its melting range. Typical applications are the joining of ferrous, nonferrous and dissimilar metals and alloys with close joint clearances. This alloy is particularly useful for joining steel, copper and copper alloys. It has proven most suitable for torch brazing with manual feeding into a joint where heating may not be consistent. It is also suitable for pre-placing as a ring or punching. |
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SILVALOY 30 is historically a modification of SILVALOY® 35 with a further reduction in silver content resulting in a higher melting point and a longer melting range (185F). It is similar to SILVALOY 35 in performance although it contains less silver. Its broader melting range is helpful where clearances are not uniform. During melting, SILVALOY 30 passes from the solid state to a mushy or plastic state and progressively to a liquid. If heated slowly through this plastic state (1125-1310F) the liquid portion may flow from the solid portion. This causes a separation of the alloy into a low temperature melting (fluid) portion and a high temperature melting (solid) portion. This phenomenon is called liquation. The high temperature melting portion will melt only above the normal brazing temperature of SILVALOY 30. For this reason, SILVALOY 30 should be heated rapidly through the melting range. Less silver than Silvaloy 35 at the expense of increased metal temperature and range. Typical applications are the joining of ferrous, nonferrous and dissimilar metals and alloys with close joint clearances. SILVALOY 30 is mostly used for brazing steel, stainless steel, copper, copper alloys, nickel, nickel alloys or combinations of these metals. |
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SILVALOY 50N is a modification of SILVALOY® 50. It was originally introduced because of somewhat better corrosion resistance than SILVALOY 50 for certain conditions, and is still used for such purposes. When melting, SILVALOY 50N passes from the solid state to a mushy or plastic range and progressively to a liquid. The largest portion of SILVALOY 50N melts in the upper section of its temperature range. Therefore, the alloy has a good body while in the plastic range and is suitable for building fillets or bridging large gaps. Late melting of the major portion of the alloy also helps minimize any separation of the solid and liquid portions by liquation during melting. It has proven successful on many marine applications and for dairy equipment which must withstand strong cleaning solutions. The 3% nickel content of this alloy also improves its wetting of stainless steel and tungsten, or molybdenum carbide tool tips. At the present time, largest use of this solder is for attaching carbide cutting tips to tool shanks. |
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Similar to Silvaloy 25 but requires better heat control. Reduced melt range but more prone to oxidation. |
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The tin content provides good wetting on many difficult to wet metals such as stainless steel and tungsten carbide. This alloy, being free of Pb or Cd is preferred for long heating cycles and is suitable for use in controlled atmosphere brazing without flux. Typical applications are the joining of ferrous, nonferrous and dissimilar metals and alloys with close joint clearances. SILVALOY A38T is used for joining ferrous metals (stainless steel, Tungsten or molybdenum carbide), and nonferrous (copper, copper alloys, nickel, nickel alloys). The largest use of this alloy is for furnace brazing although it is also suitable for other brazing procedures. |
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SILVALOY A35 is a good general purpose alloy often used when cadmium must be avoided such as in the dairy and food industries. Typical applications are the joining of ferrous, non-ferrous and dissimilar metals and alloys with close joint clearances. It is mostly used for brazing in the electrical industry and for brazing brass parts such as ships, piping, band instruments, lamps, etc. Dissimilar metals brazing in refrigeration tubing. Moderate melt temperature for ferrous and non-ferrous alloys. |
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SILVALOY A45T is a free flowing, low melting and an excellent substitute to the cadmium-bearing filler metals with similar silver contents. SILVALOY A45T narrow melt range (75F) makes it suitable for manual or machine feeding into the braze joint. The alloy is best suited for narrow gap filling in the range of .001-.005 inches. Typical applications are the joining of ferrous, nonferrous and dissimilar metals and alloys with close joint clearances. SILVALOY A45T is particularly useful in joining steel, copper, copper alloys; and should be used in conjunction with Ultra Flux. The ability to join similar as well as dissimilar metals has allowed for numerous applications in the refrigeration and air conditioning fields. |
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SILVALOY A25T is an economical filler metal for ferrous and nonferrous joints not requiring high ductility or impact strength. It is similar to SILVALOY® A40T, however flow is less active and temperature range and brazing temperatures are greater. This alloy is not ductile during cooling. After brazing, it must be allowed to cool without being subjected to mechanical or thermal stress. Least silver of this family. Moderate ductility limits joint design and application. |
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Good corrosion properties with stainless steels. Used in joining tungsten carbides. |
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