Brazing & Soldering Products

Lucas-Milhaupt offers the most comprehensive inventory of alloys and forms in the industry and our expertise in brazing and soldering ensures that we can find the best-matched products for your needs.

Technical Documentation

Visit our knowledge base for MSDS and other technical documentation.

Download Technical Documents

VTG/High Purity Silver, Gold, Palladium

High Purity/VTG Alloys for Electron Devices

Our alloys are vacuum-grade filler metals that have their compositions specifically controlled to fabricate joints exposed to high vacuum on electron devices. These alloys must be brazed in high purity atmosphere or vacuum. Premabraze® alloys consist of only certified "pure" materials, this metal is vacuum melted and cast to insure cleanliness.

Premabraze® Alloys use the Purest and Cleanest Metal Grades

Lucas-Milhaupt's pure metals are vacuum processed to ensure material cleanliness.Conformance to specification is assured by chemical analysis and other performance requirements. Several grades of these materials are available, from 3 nines (.999) to 5 nines (.99999) pure.

* Login required for document download.

Product SolidusLiquidusNominal Composition, %AWS & International Standards Technical Documents* MSDS Safety Documents*
°F °C °F °C Ag Au Cu Ni Pd Other
Braze 503

For electronic components where Cd and Zn are not desired.


 1435 779 1600 870 50   50       BVAg-6b
Braze 604

For vacuum tube seals - joins ferrous and nonferous alloys.


 1115 600 1325 720 60   30     10 Sn
 		 BVAg-18
Braze 716

For atmosphere brazing of Nickel & Ferrous-based metals.


 1435 780 1465 795 71.5   28 0.5     BVAg-8b
Braze 717

--


 0 0 0 0                
Braze 721

For joining nonferrous electric components in vacuum.


 1435 780 1435 780 72   28       BVAg-8
Braze 999

A VTG alloy for brazing ceramics to be used in semiconductors.


 1761 961 1761 961 99.9           BVAg-0
Gold

Very ductile - Wets most metals. Several grades available.


 1947 1064 1947 1064   99.99          
Lithobraze 720

For brazing in dry hydrogen or inert atmosphere - joins stainless.


 1400 760 1400 760 71.7   28     0.3 Li
 		 BAg-8a
Lithobraze 925

Recommended for furnace brazing of Stainless without flux.


 1400 760 1635 890 92.5   7.3     0.2 Li
 		 BAg-19
Lucanex

Brazing Paste Blended with Ti for active metal brazing of ceramics.


 0 0 0 0              
 
Palladium

High temperature brazing of refractory metals. Several grades available.


 2826 1552 2826 1552         99.99    
Platinum

Very high temperature - Several grades available.


 3216 1767 3216 1767           99.99 Pt
 		  
Premabraze 051

Narrow melting range - good for step brazing.


 1625 885 1643 895 5 75 20        
Premabraze 127

For Nickel, Mo, SS, Kovar®, and Mo-Mn metalized ceramics.


 1785 974 1885 1029   35 62 3     BAu-3
Premabraze 131

For vacuum applications - joins SS, Inconel, Kovar®, Tungsten, etc.


 1740 949 1740 949   82   18     BVAu-4, AMS 4787
Premabraze 180

Low penetration of substrates.


 2246 1230 2255 1235         65 35 Co
 		  
Premabraze 265

For SS, Cu, Kovar®, and non-Mo-Mn metallized ceramics.


 1562 850 1662 900 65   20   15    
Premabraze 399

For Copper, Nickel, Kovar®, and Mo-Mn metallized ceramics.


 1815 991 1860 1016   37.5 62.5       BAu-1
Premabraze 402

For Copper, Nickel, Kovar®, and Mo-Mn metallized ceramics.


 1751 955 1778 970   50 50        
Premabraze 407

For Copper, Nickel, Kovar®, and Mo-Mn metallized ceramics.


 1814 990 1850 1010   35 65        
Premabraze 408

Narrow melting range, useful in step brazing.


 1535 835 1553 845 20 60 20        
Premabraze 409

For Cu, Ni, Mo-Mn - remains ductile. Low vapor pressure.


 1670 910 1697 925   81.5 16.5 2      
Premabraze 500

High strength and good oxidation resistance, for joining Super Alloys.


 2016 1102 2050 1121   50   25 25   BVAu-7, AMS 4784
Premabraze 540

Similar to Au-Ni - lower cost and density. Doesn't embrittle Kovar®.


 1652 900 1740 950 54   21   25   BVAg-32
Premabraze 550

For corrosion resistance joints - Brazing stainless steel.


 1520 827 1600 871 55   30 5 10    
Premabraze 580

For Nickel, Copper, Kovar® and Mo-Mn. Good for vacuum tight joints.


 1515 824 1566 852 58   32   10   BVAg-31
Premabraze 616

For joining ferrous and nonferrous metals in moderate temp vaccum.


 1155 625 1305 705 61.5   24     14.5 In
 		 BVAg-29
Premabraze 631

Low melting, low vapor pressure. Joins ferrous and nonferrous metals.


 1265 685 1346 730 63   27     10 In
 		  
Premabraze 680

For Kovar® and Mo-Mn seals.


 1485 807 1490 810 68   27   5   BVAg-30
Premabraze 700

For Super Alloys and stainless - high ductility and strength.


 1845 1007 1915 1046   70   22 8   BAu-6, AMS 4786
Premabraze 800

Low ductility alloy - low vapor pressure.


 536 280 536 280   80       20 Sn
 		  
Premabraze 880

Low ductility alloy.


 673 356 673 356   88       12 Ge
 		 BVAu-7
Premabraze 901

Recommended for Ni, stainless steel, Mo, W and fast cycles on Ti.


 1835 1002 1950 1065 90       10    
Silver

Available in several grades including (99.9, 99.93, 99.95, 99.99).


 1761 961 1761 961 99.99