- Medical devices
- Electronic devices
- Aerospace parts (precision machined stainless steel components)
- High vapour pressure braze alloys (Cu, Ag, etc.)
- High cleanliness assemblies
Hydrogen brazing can be applied to a multitude of materials such as stainless steel, copper and some nickel based alloys. Titanium alloys cannot be brazed in a hydrogen atmosphere. Hydrogen brazing reduces surface oxides at the faying surfaces, resulting in a clean, high integrity braze joint that improves the service characteristics of the finished part.
Hydrogen brazing can be performed within a sealed retort furnace or a hump back belt furnace. Both furnace types surround the part being processed within a high purity hydrogen atmosphere (typically with a dew point of less than minus 60°F). As the furnace load is heated above the liquidus temperature of the braze alloy, the hydrogen atmosphere reduces surface oxides present of the parent material and improves the wetting characteristics of the braze alloy.