Bimetal Tube & Pipe Couplings
Standard Tube and Pipe Bimetallic (Al/SS) Transition Couplings
Atlas bimetallic transition couplings are robust, metallurgically bonded dissimilar metal joints used to weld dissimilar metal tubes or pipes. These high strength joints are reliable and engineered to withstand typical welding temperatures. They are hermetic and suitable for use in Ultra High Vacuum (UHV). They are used in thousands of cryogenic, ultra high vacuum (UHV), and industrial applications worldwide.
Our bimetallic couplings enable the high thermal conductivity of one metal (aluminum or copper) to directly transition to a poor thermal conducting metal such as stainless steel or titanium. Consequently they are used extensively in cryogenic liquid or gas lines, or other thermal transfer applications where contrasting heat transfer is needed. They are also used in nonmagnetic or nuclear applications where the properties of one metal must be reliably switched to that of another.
For demountable hermetic transitions for aluminum, copper or titanium see our ATCR fittings page and our Bimetallic Atlas CF flange pages.
Our all-welded bimetallic joints are fully metallurgical. They are explosively bonded using with a propriety low diffusion method that minimizes porosity and maximizes strength.
Our Bimetal tube and pipe transition couplings are available in all standard sizes, wall thicknesses, and schedules ranging from ⅜” to 40″ diameter (DN10 to DN750). Pressure testing and certification for low, medium, and high (<300, <600, and <1200 psi) pressure is offered.
Available Materials Combinations:
- AS (Aluminum 6061/(interlayers: Titanium /Copper)/ 316L Stainless)
- AT (Aluminum 6061/ Titanium CP Gr2)
- AC (Aluminum 6061/ C101 Copper)
- TS (Titanium CP Gr. 2/ 316L Stainless)
- CS (C101 Copper/ 316L Stainless)
Nearly any combination of metals are available. Ask us for more information!
- BW (Butt weld prep)
- SW (Socket weld prep)
- MW (Male weld prep)
Pipe Schedule Configurations:
- SCH4040 (pipe schedule
Pressure Test Certification:
- L (Low pressure)
- Vacuum Rated to 1×10-9 Torr All bonds are vacuum tested
- Peak Temperature: 300°C
- Operational Temperature from 4K to 250°C (depending on the metal combination)