Nylon Glass Fiber Eryone White (PA6)

Carbon Fiber vs Fiberglass

Stiffness and Weight: The PA12-CF is the clear winner if you are looking for maximum stiffness with the lowest possible weight. Carbon fibre is extremely light and provides a very firm structure, ideal for parts that do not have to bend under load. In contrast, PA12-GF is heavier (glass has a higher density) and, although it is rigid, it maintains greater elasticity than carbon.

Electrical Behavior: This is a critical difference. The PA12-GF is a natural electrical insulator, making it perfect for electronics housings or connectors. PA12-CF, due to the nature of carbon, is usually conductive or dissipative, so it should not be used where insulation is required.

Toughness and Impact: Glass provides greater resistance to impact. A piece of PA12-GF can take a hit and absorb some of the energy, while PA12-CF, being so rigid, tends to be more brittle and can crack in the face of dry impacts or extreme vibrations.

PA12 vs PA6

Moisture stability: The most famous difference is that PA6 is "fluffy" at the molecular level; it absorbs a lot of water. This causes the part to swell slightly and lose stiffness over time. PA12 has minimal moisture absorption, so its dimensions do not change even if you work in marine or very humid environments.

Thermal Resistance: PA6 gains in heat. It has a higher melting point (around 220°C), which allows it to maintain its shape in temperatures where PA12 (which melts around 178°C) would already begin to soften.

Chemical Resistance: PA12 is exceptionally resistant to harsh chemicals, gasolines, and oils. That's why it's the preferred material for fuel lines and pneumatic systems. PA6 is hardy, but its porosity to moisture makes it more vulnerable to certain chemical degradants in the long term.

Ease of Processing: The PA12 is much more docile. In 3D printing it has less "warping" (deformation of the corners) and in injection it is more stable. The PA6 is more technical and "temperamental" to work with due to its thermal contractions and environmental sensitivity.