TECAFORM® AH Static Dissipative Rod, Unmarked

TECAFORM® AH SD is an acetal copolymer (POM-C) compounded with a conductive additive that sets surface resistivity in the 10^9 to 10^11 ohms per square range. That places it squarely in the static dissipative band: charge bleeds away in a controlled fashion rather than dumping through the part, as it can with heavily carbon-filled conductive grades. The base polymer keeps acetal's useful mechanical balance, with 5,000 psi tensile strength at yield, 7,000 psi flexural strength, 20% elongation at break, and good creep, fatigue, and wear resistance.

It is used for semiconductor handling fixtures, wafer and device carriers, electronics assembly jigs, test nests, guides and conveyor components on electronics lines, and equipment parts in chemical and packaging plants where charge build-up creates a contamination or ignition risk. Because the additive is dispersed through the section rather than applied as a coating, freshly machined surfaces retain the same resistivity, and the shapes machine like unfilled acetal with no abrasive filler to chew up tooling. Long-term service is 212°F (100°C) with 284°F short-term. Strength is below unfilled POM-C, natural is the only colour, and it carries no food-contact approval.