TRI49Ni4
AWS: BAg-22
Trimetal 49Ni4 is a three-layer composite metal consisting of a copper core faced on each side with SB49Ni4; the relative thickness of the 3 layers is in a 1/2/1 ratio. This layered design is beneficial for carbide tool inserts because the increased ductility of the copper core minimizes internal stresses introduced by differences in thermal expansion between the carbide and tool shank.
Characteristics
Trimetal strip may also be used to braze aluminum-bronze to steel; the copper core acts as a barrier which prevents aluminum from migrating to the steel surface and adversely affecting the wetting of the SB49Ni4 to the steel surface.
Properties
The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design, metallurgical interaction between the base metal and the filler metal. The results listed below were generated from brazed butt joints which were tested under standard room temperature conditions. Tensile Strength (lbs/in2) 1020 Carbon Steel: 49,000 1095 Carbon Steel: 92,400 304 Stainless Steel: 76,600 Elongation (%, 2” gage length) 1020 Carbon Steel: 4 1095 Carbon Steel: 7 304 Stainless Steel: 15
Specs
American Welding Society (AWS)
BAg-22
Solidus
1260 F / 680 C
Liquidus
1290 F / 699 C
Disclaimer
The information and recommendations contained in this publication have been provided without charge & compiled from sources believed to be reliable and to represent the best information available on the subject at the time of issue. No warranty, guarantee, or representation is made by the Prince and Izant Company, Inc. as to the absolute correctness or sufficiency of any representation contained in this and other publications; Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can it be assumed that all acceptable safety measures are contained in this (and other publications, or that other or additional measures may not be required under particular or exceptional conditions or circumstances.
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