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Precious Brazing Filler Metals

The extensive range of high purity, low vapor pressure Precious Brazing Filler Metals offered by the Wesgo Metals Division of Morgan Advanced Ceramics is derived from Gold, Silver, Platinum and Palladium based materials, and exceeds the most stringent requirements imposed by the Power Tube, Aerospace, Semiconductor, Medical, Electronic and Vacuum industries in which they serve. The table lists the major alloys available, and the forms produced include sheet, wire, paste, powder and preforms.

 
Active Braze Alloys eliminate the need for traditional ceramic metallization prior to brazing as the active components promotes wetting on the ceramic surface. One-step brazing with ABA® replaces metallizing, firing and electroplating, offering savings in time and cost. ABA®’s are available in Gold, Silver, Titanium and Copper based materials and offer highly reliable hermetic seal between ceramic and metal for both oxide and non-oxide ceramics. Available alloy forms include foil, wire and paste.

Precious Brazing Filler Metals Available forms: foil, flexibraze, wire, powder, extrudable paste and preforms.

Name Nominal
Composition
Percent		 Liquidus Solidus
°C °F °C °F
Platinum Pt – 99.95 1769 3216 1769 3216
Palladium Pd – 99.95 1555 2831 1555 2831
Paloro® Au – 92
Pd – 8		 1270 2318 1200 2192
Palni® Pd – 60
Ni – 40		 1238 2260 1238 2260
Palco™ Pd – 65
Co – 35		 1219 2226 1219 2226
Palnicusil® Pd – 22.5
Ni – 10
Cu – 18.9
Ag – 48.6		 1179 2155 910 1670
Palniro®4
(AMS-4785)		 Au – 30
Pd – 34
Ni – 36		 1169 2136 1135 2075
Palniro®1
(AMS-4784)		 Au – 75
Pd – 25
Ni – 25		 1121 2050 1102 2016
Palmansil™5 Au – 75
Pd – 20
Mn – 5		 1072 1962 1008 1846
Palsil™10 Ag – 90
Pd – 10		 1070 1958 1025 1877
Gold Au – 99.99 1064 1947 1064 1947
Palnicurom 25 Au – 25
Ni – 18
Pd – 15
Mn – 11
Cu – 31		 1052 1926 1017 1863
Palniro®7
(AMS-4786)		 Au – 70
Pd – 8
Ni – 22		 1037 1899 1005 1841
Nicoro®(BAu-3) Au – 35
Cu – 62
Ni – 3		 1030 1886 1000 1832
Zn – Less than .001%
Cd– Less than .001%
Pb – Less than .002%
P - Less than .002%
C - Less than .005%		 Impurity Limits – All other metallic impurities having a vapor pressure higher than 10-7 mm Hg at 500°C are limited to .002% each. Impurities having a vapor pressure lower than 10-7 mm Hg at 500°C are limited to a total of .050%. (Applicable to all forms except powder and extrudable paste).

 

Name Nominal
Composition
Percent		 Liquidus Solidus
°C °F °C °F
Incuro™20 Au – 20
Cu – 78
In – 2		 1025 1877 975 1787
Palnicurom®10 Au – 25
Pd – 15
Ni – 10
Mn – 13
Cu – 37		 1013 1855 970 1778
35% Gold
65% Copper		 Au – 35
Cu – 65		 1010 1850 990 1814
Nioroni™ Au – 73.8
Ni – 26.2		 1010 1850 980 1796
37.5% Gold
62.5% Copper		 Au – 37.5
Cu – 62.5		 1005 1841 985 1805
RI-46 Au – 35.25
Ni – 14
Pd – 10
Mn – 9.75
Cu – Bal.		 1004 1840 971 1780
40% Gold
60% Copper		 Au – 40
Cu – 60		 1000 1832 980 1796
Croniro® Au – 72
Ni – 22
Cr – 6		 1000 1832 975 1787
50% Gold
50% Copper		 Au – 50
Cu – 50		 970 1778 955 1751
Silver Ag – 99.99 960 1760 960 1760
Palnicro®36M Pd – 36
Cr – 10.5
B – 3
Si – 0.5
Ni – Bal		 960 1760 820 1508
Nioro®
(AMS-4787; BAu-4)		 Au – 82
Ni – 18		 955 1751 955 1751
Palcusil®25 Ag – 54
Cu – 21
Pd – 25		 950 1742 900 1652
RI-49 Au – 31
Ni – 9.75
Pd – 9.75
Mn – 16
Cu – Bal		 949 1740 927 1700

 

Name Nominal
Composition
Percent		 Liquidus Solidus
°C °F °C °F
Nicoro®80 Au – 81.5
Cu – 16.5
Ni – 2		 925 1697 910 1670
80% Gold
20% Copper		 Au – 80
Cu – 20		 910 1670 908 1666
Palcusil®15 Ag – 65
Cu – 20
Pd – 15		 900 1652 850 1562
Incuro™60 Au – 60
Cu – 37
In – 3		 900 1652 860 1580
Silcoro®75 Au – 75
Cu – 20
Ag – 5		 895 1643 885 1625
Nicusil®8
(AMS-4765)		 Ag – 56
Cu – 42
Ni – 2		 893 1639 771 1420
Palcusil®10 Ag – 58.5
Cu – 31.5
Pd – 10		 850 1535 805 1490
Gapasil®9 Ag – 82
Pd – 9
Ga – 9		 880 1616 845 1553
Silcoro 60 Au – 60
Cu – 20
Ag – 20		 845 1553 835 1535
95% Silver
5% Aluminum		 Ag – 95
Al – 5		 830 1526 780 1436
Palcusil®5 Ag – 68.5
Cu – 26.5
Pd – 5		 814 1490 794 1463

 

Name Nominal
Composition
Percent		 Liquidus Solidus
°C °F °C °F
Nicusiltin™6
(AMS-4774A)		 Ag – 62.5
Cu – 29
Ni – 2.5
Sn – 6		 802 1476 691 1275
Nicusil®3 Ag – 71.15
Cu – 28.1
Ni – 0.75		 795 1463 780 1436
90% Silver
10% Gernamium		 Ag – 90
Ge – 10		 790 1454 651 1204
Cusil® Ag – 72 780 1436 780 1436
Cusiltin™5 Ag – 68
Cu – 27
Sn – 5		 760 1400 743 1369
Incusil 10 Ag – 63
Cu – 27
In – 10		 730 1346 685 1265
Cusiltin
(AMS-4773)		 Ag – 60
Cu – 30
Sn – 10		 718 1324 602 1116
Incusil®15 Ag – 61.5
Cu – 23.5
In – 15		 725 1335 605 1120
Georo™ Au – 88
Ge – 12		 361 682 361 682
Orotin™ Au – 80
Sn – 20		 280 536 280 536
Special Alloys: WESGO will be pleased to quote your special requests.
Zn – Less than .001%
Cd– Less than .001%
Pb – Less than .002%
P - Less than .002%
C - Less than .005%		 Impurity Limits – All other metallic impurities
having a vapor pressure higher than 10-7 mm Hg
at 500°C are limited to .002% each. Impurities
having a vapor pressure lower than 10-7 mm
Hg at 500°C are limited to a total of .050%.
(Applicable to all forms except powder and
extrudable paste).

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Wesgo® Metals
 2425 Whipple Road, Hayward, CA 94544 USA
Phone (510) 491-1100  •  Fax (510) 491-1175

A Division of Morgan Advanced Ceramics
   Morgan Technical Ceramics is a Global Business Unit of the Morgan Crucible Company plc.
It comprises Morgan Advanced Ceramics and Morgan Electro Ceramics.