What is the ideal material for forming flares using rolling-type flaring tools?

The ideal material for forming flares using rolling-type flaring tools is soft metals. Soft metals, such as copper, aluminum, and softer grades of brass, can easily deform without cracking or breaking when subjected to the rolling process of flaring. This ductility allows the metal to create a smooth, uniform flare that forms a strong and effective seal when connected to fittings.

In contrast, hard steel or titanium would not be suitable for this purpose because these materials have a higher tensile strength and lower malleability, making it difficult to achieve the desired flare without risking damage. Plastics, while they can be molded and shaped, typically do not possess the necessary durability or strength to withstand high-pressure applications often encountered in fluid systems. This makes soft metals the optimal choice for creating reliable flares in hydraulic and pneumatic systems.