GMW16278

Description / Abstract: GMW16278, 4th Edition, July 2020 - Polyoxymethylene Copolymer - Carbon Filled, Electrostatically Dissipative, Gasoline Compatible

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

This specification covers the properties of a carbon powder and/or fiber filled, pellet formed, injection moldable, polyoxymethylene (acetal) copolymer. The different types are categorized by their level and type of carbon filler:

• C1: 4% to 7% Carbon powder

• C2: 7% to 10% Carbon powder

• C3: 10% to 15% Carbon powder + Carbon fiber blend

• C4: 10% to 15% Carbon fiber

Symbols.

The material abbreviation according to ISO 11469 is:

• C1: POM-CD5

• C2: POM-CD8

• C3: POM-(CD+CF)12

• C4: POM-CF12

Applicability.

Typical applications include fuel system components requiring electrostatically dissipative properties such as:

• C2: Inlet control valves and fuel pump module components.

• C3: Inlet control valves and filter components.