Tensile Strength of Various Polymers is Important in Manifold Design

Tensile Strength of Various Polymers is Important in Manifold Design

As plastics become more and more the material of choice for machined plastic manifold blocks, tensile strength becomes a very important mechanical property design criteria. Plumbing and component connections, typically utilize a threaded attachment mechanism. This attachment can result in high tensile stress on the plastic manifold block and result in the failure of what could be a very expensive precision machined plastic component. We have seen these results when the wrong material is used in the design.

Acrylic offers a cost effective plastic with high clarity after machining and polishing. This makes it desirable for manifold applications. However other plastics offer significantly higher tensile strength properties, good clarity after machining and polishing and are far less brittle than Acrylic. See chart below. These materials should be considered along with full design parameters when selecting a material.

Tensile Strength (psi)

Acrylic 10,100

Polysulfone 10,200

Ultem 1000 16,500

PEEK 16,000

The laboratory and diagnostic instrumentation market constantly demands smaller, more compact equipment. Bonded multilayer fluidic manifolds can be a good choice to achieve the packaging size reduction that is the preferred design. A multilayer manifold is frequently a single manifold replacing the traditional tubing connections between multiple manifolds. The layers allow vertical integration and encapsulation of the connections between various components such as pumps and valves. Bonded fluidic manifolds have many advantages over the traditional tubing layout. Visit our website for more detail.

Connecticut Plastics has 30+ years of experience with the selection and precision machining of plastics, and we are always available to assist you with your application.

Please visit our website to learn more about our company, for contact info, or to fill out an inquiry form to request a quote. There you can also upload a drawing.

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