MULTICLAD™ tube product for CAB

A high strength material with extraordinary corrosion resistance.

Gränges presents the MULTICLAD™ material family featuring exceptional performance. MULTICLAD™ is a multilayer Rolled Products concept for tubes where a selected core alloy is combined with a tailored interlayer. The interlayer minimizes the flow of liquid film to the core alloy which improves corrosion resistance. MULTICLAD™ is developed for the most demanding applications, with high requirements on strength and corrosion resistance. The MULTICLAD™ material design will enable further downgauging, providing potential for total cost benefits. For the Gränges MULTICLAD™ concept, several combinations of core materials and interliners can be used. In this data sheet two suitable examples are presented.

Grain structure before brazing.

Chemical composition

Weight %

Mechanical properties

Delivery condition temper and properites

Typical strength and corrosion potential after brazing

* Dependent on braze cycle.

Corrosion resistance

The MULTICLAD™ concept shows an outstanding corrosion performance and is well suited for down gauging in systems with high demands on corrosion performance. The tailored interlayer minimizes the flow of liquid film to the core alloy which improves the corrosion resistance of the MULTICLAD™. The potential difference between the surface and the center of the core keeps the corrosion contained to a limited depth.

Section of the MULTICLAD™ alloy combination MH36 after 50 days SWAAT.


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