PEKK ESD vs PEKK GF30
Polymer · grade comparison
PEKK-ESD and PEKK GF30 are both polymer grades, both high performance plastic, compared here in the GF30 condition. PEKK GF30 is the stronger of the two: yield strength 95 MPa (13.8 ksi) against 78 MPa (11.3 ksi) for PEKK-ESD, about 22% more; tensile strength follows at 160 MPa (23.2 ksi) vs 82 MPa (11.9 ksi). In exchange, PEKK-ESD is the more ductile: elongation 3% versus 2.5% for PEKK GF30. PEKK-ESD is lighter (1.33 g/cm³ vs 1.53 g/cm³ for PEKK GF30) and PEKK GF30 is stiffer (11 GPa vs 3.5 GPa). On the shop floor, PEKK-ESD machines more easily (good vs fair) and PEKK GF30 welds better (good vs poor).
PEKK-ESDChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PEKK GF30Choose it when strength drives the design, or when the part sees heat.
PEKK-ESD vs PEKK GF30: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
Izod Impact, Notched
Hardness, Rockwell R
Bulk Modulus
Same in both: Poisson's Ratio 0.4 · Hardness, Shore D 86 Shore D · Hardness, Rockwell M 100 HRM
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Water Absorption (24 h)
Same in both: Glass Transition (Tg) 162°C324 °F · Water Absorption (Saturation) 0.5%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Max Service Temperature (short-term)
Same in both: Specific Heat Capacity 1,050 J/kg·K0.25 BTU/lb·°F · Heat Deflection Temp. @ 0.45 MPa 175°C347 °F · Limiting Oxygen Index 40%
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Surface Resistivity
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Comparative Tracking Index (CTI)
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Same in both: Corrosion Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Polishability
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Same in both: Embodied Carbon (primary production) 18 kg CO₂/kg · Typical Recycled Content 0%
Strength versus weight
Yield strength against density for every polymer grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | PEKK-ESD | PEKK GF30 |
|---|---|---|
| Default condition | — | Unfilled |
| Relative cost | $$$$$ Specialty | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both are offered for 3D printing. Both take the same 10 finishes: Conductive Coating, Dyeing (Nylon), EMI Shielding Coating, Painting, Primer Coating, Soft Touch Coating, Tinted Coating, UV Coating, Vacuum Metallization, Waterproof Coating.
PEKK-ESD vs PEKK GF30 — frequently asked
Is PEKK GF30 stronger than PEKK-ESD?
Yes. PEKK GF30 has a typical yield strength of 95 MPa (13.8 ksi) against 78 MPa (11.3 ksi) for PEKK-ESD — about 22% more. Tensile strength is 160 MPa (23.2 ksi) vs 82 MPa (11.9 ksi).
Which is cheaper, PEKK-ESD or PEKK GF30?
Both sit in the same relative cost tier ($$$$$, specialty); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, PEKK-ESD or PEKK GF30?
PEKK-ESD. Its machinability rates good (62/100) against fair (45/100) for PEKK GF30; for welding the order is PEKK GF30 first (good, 55/100) then PEKK-ESD (poor, 30/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PEKK-ESD and PEKK GF30 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.