Brazing Alloys

Cross Reference Chart

This chart shows a partial listing of aerospace-grade braze alloys available from Vitta Corporation, along with a cross-reference to the most common specifications and trade-names. (Please contact us if you are searching for any aerospace-grade braze alloys not listed below)

DMR 35
EMS 54752
Vitta-Braz 1764 4764 B50TF63 935 NICUMAN 37
Vitta-Braz 1770 4770
Vitta-Braz 1775 BNi-1 4775 TYPE IV 125 NI-167 750
Vitta-Braz 1776 BNi-1a 4776 LC NI-510 760
Vitta-Braz 1777 BNi-2 4777 B50TF204 /97 -302 TYPE II LM NI-362 770 ICRONIBSI-7
Vitta-Braz 1778 BNi-3 4778 B50TF205 /114 -304 TYPE I 130 NI-298 780 NIBSI-4
Vitta-Braz 1779 BNi-4 4779 B50TF206 /700 -305 TYPE X 135 NI-489 790 NIBSI
Vitta-Braz 1782 BNi-5 4782 B50TF81 /116 -332 TYPE V 30 NI-430 100 CRONISI
Vitta-Braz 1006 BNi-6 TYPE XI 10 766
Vitta-Braz 1007 BNi-7 50 767
Vitta-Braz 1008 BNi-8 B50TF94 930 NICUSIM 65
Vitta-Braz 1009 BNi-9 B50TF207 -307 TYPE VIII 150 NI-276 775
Vitta-Braz 1783 BCo-1 4783 B50T56 PWA 713 210 CO-216 400 COCROWNIBSI
Vitta-Braz 1787 4787
Vitta-Braz 1013 B50TF13
Vitta-Braz 1017 B50TF17
Vitta-Braz 1090 B50TF90 NI-334
Vitta-Braz 5093 B50TF93
Vitta-Braz 1099 B50TF99 35 300
Vitta-Braz 1142 B50TF142 PWA 797 /730 NI-530 103
Vitta-Braz 1143 B50TF143 NI-568 102
Vitta-Braz 5148 B50TF148
Vitta-Braz 1173 B50TF173 NI-173
Vitta-Braz 1183 B50TF183 NI-183
Vitta-Braz 1185 B50TF185 CO-285
Vitta-Braz 1190 B50TF190
Vitta-Braz 1198 B50TF198
Vitta-Braz 1202 B50TF202 NI-202
Vitta-Braz 1203 B50TF203 NI-203 718B
Vitta-Braz 1208 B50TF208
Vitta-Braz 1996 PWA 996 /705 TYPE XIII NI-510 915 ICRONIBSI-13
Vitta-Braz 1117 PWA 1179 TYPE XII NI-555 936
Vitta-Braz 1118 PWA 1185 CO-246
Vitta-Braz 1699 PWA 36099
Vitta-Braz 1303 -303 TYPE IX 914
Vitta-Braz 1070 TYPE VII 160 752
Vitta-Braz 1030 TYPE III 170 757
Vitta-Braz 1050 51
Vitta-Braz 1287 B50TF287
Vitta-Braz 1288 B50TF288
Vitta-Braz 1292 B50TF292


A guide to brazing alloys

If your project requires you to combine dissimilar metals together, then you will need a brazing alloy. This is a guide to help you understand more about what they are and how to make sure you get the best possible quality when it comes to choosing brazing alloys.

What is brazing?

In effect, brazing is a similar process to soldering but at far higher temperatures. Whilst this usually refers to joining metals together, it has also been used in the ceramics industry. The braze alloy is a molten filler metal that flows into the gap forming a joint that binds the materials together.

What is the alloy made from?

High-temperature alloys are primarily based on gold, silver, nickel, aluminium and copper but also feature precious and semi-precious metals such as palladium, titanium and zirconium. The advantage of using this method as opposed to a mechanically fastened joint is that it has a smaller size and weighs a lot less, something that can be crucial if you want to make small component parts. In most instances, the brazed joint will be as strong or even stronger than the metal that has been joined together.

Another major advantage of this method is the fact that brazed alloys can function at higher operating temperatures. The process can be done in a variety of atmospheres including air, ammonia, inorganic vapours, combusted fuel gas or a vacuum furnace

How do you ensure a good join?

The process involved in brazing requires a source of heat. This can be via the use of a handheld torch (primarily used for small assemblies and low volume applications), a furnace or some form of induction heating system.

In order to make sure you get the best quality join, the filler and parent materials you use in the process should be compatible on a metallurgic level. It is also vital that the design of the joint has a gap included that will allow the molten filler to be drawn, this can vary depending on different factors such as the atmosphere or the composition of the base material and braze alloy.

How do you choose the right alloy?

Choosing the right alloy for the job depends on the material you are using and the environment that you are working in. For example, some industrial environments such as boiler houses or paper mills will have a high concentration of sulphur or sulphides.

In this application there is a risk of sulphides attacking the phosphorus in the phos copper brazing alloy. In this instance, it is recommended that you use a high silver brazing alloy in order to reduce the risk of leaks.

Preparation is important.

You should make sure that the base metal involved in the process has been properly cleaned, while also avoiding any excess oxidation during the heating process. This will give you the best chance of achieving maximum joint integrity.

A skilled operator will not only need to understand the heating rate required for the application but will also need to ensure that they have applied the correct quantity and ratio of braze filler metal and binder. 

Pre-manufactured braze alloy transfer tapes can help in this situations by being able to deliver a precise and uniform level of braze alloy to the application.

What is it used for?

There are a wide array of applications for using brazing alloys, depending on the type of material you use. For example, brazing alloys are used extensively within the aerospace industry, energy exploration and extraction as well as in the fields of nuclear engineering and for various uses in the electronics industry.

Nickel brazing filler metal benefits from being both corrosion and heat resistant.  It is often used to produce highly stressed sheet metal structures and similar components. There are also specialist variants that are used to create chemical processing equipment parts.

Silver alloys can also be used in the food and beverage industry, ensuring that anything produced in this way are safe to use and be transported.

Why choose Vitta Corporation?

When it comes to brazing alloys, it is not just about the quality of the material but also ensuring that the people working with that material know how to handle it safely and properly. With over 50 years of experience, Vitta has been leading the field in terms of developing new and innovative materials, adapting to the needs and requirements of a range of industries.

We are confident in the service and products we offer  We’ve been manufacturing braze alloys for over 50 years and we welcome your enquiry so that we can offer you our best advice on your specific requirements. To find out more about how Vitta Corporation and our brazing alloys can benefit your business please contact us today.