PEEK-450G ESD vs PEEK-450G GF30
Polymer · PEEK-450G grade comparison
PEEK-450G ESD and PEEK-450G GF30 are two grades of the same polymer grade, PEEK-450G: ESD (ESD / static-dissipative) versus GF30 (450GL30). The chemistry is identical, so every difference below comes from the condition. PEEK-450G GF30 is the stronger of the two: yield strength 100 MPa (14.5 ksi) against 90 MPa (13.1 ksi) for PEEK-450G ESD, about 11% more; tensile strength follows at 165 MPa (23.9 ksi) vs 90 MPa (13.1 ksi). In exchange, PEEK-450G ESD is the more ductile: elongation 10% versus 2.5% for PEEK-450G GF30. PEEK-450G ESD is lighter (1.32 g/cm³ vs 1.51 g/cm³ for PEEK-450G GF30) and PEEK-450G GF30 is stiffer (10.5 GPa vs 4.2 GPa). On the shop floor, PEEK-450G ESD machines more easily (good vs fair) and PEEK-450G GF30 welds better (good vs fair).
PEEK-450G ESDChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PEEK-450G GF30Choose it when strength drives the design, or when it will be welded.
PEEK-450G ESD vs PEEK-450G 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell M
Same in both: Shear Modulus 1.4 GPa0.2 Msi · Bulk Modulus 5 GPa0.73 Msi · Poisson's Ratio 0.38 · Compressive Modulus 3.5 GPa0.51 Msi · Hardness, Rockwell R 126 HRR
Physical
Density and transition temperatures.
Density
Same in both: Melting Temperature (Tm) 343°C649 °F · Glass Transition (Tg) 143°C289 °F · Water Absorption (24 h) 0.12% · Water Absorption (Saturation) 0.45% · Refractive Index 1.65
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Limiting Oxygen Index
Same in both: Specific Heat Capacity 1,340 J/kg·K0.32 BTU/lb·°F · Min Service Temperature -60°C-76 °F · Max Service Temperature (short-term) 310°C590 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Surface Resistivity
Same in both: Dielectric Strength 20 kV/mm508 V/mil · Dielectric Constant (1 MHz) 3.2 · Dissipation Factor (1 MHz) 0.003 · Comparative Tracking Index (CTI) 150 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 40 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Mold Shrinkage
Melt Flow Rate
Same in both: Polishability 70 / 100 · Processing Melt Temperature (typ.) 380°C716 °F · Mold Temperature (typ.) 190°C374 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 290 MJ/kg124,678 BTU/lb · Embodied Carbon (primary production) 16 kg CO₂/kg · Embodied Water 500 L/kg59.9 gal/lb · 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.
PEEK-450G ESD vs PEEK-450G GF30 — frequently asked
Is PEEK-450G GF30 stronger than PEEK-450G ESD?
Yes. PEEK-450G GF30 has a typical yield strength of 100 MPa (14.5 ksi) against 90 MPa (13.1 ksi) for PEEK-450G ESD — about 11% more. Tensile strength is 165 MPa (23.9 ksi) vs 90 MPa (13.1 ksi).
Which grade does FabDigit quote by default, ESD or GF30?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, PEEK-450G ESD or PEEK-450G GF30?
PEEK-450G ESD. Its machinability rates good (60/100) against fair (45/100) for PEEK-450G GF30; for welding the order is PEEK-450G GF30 first (good, 55/100) then PEEK-450G ESD (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PEEK-450G ESD and PEEK-450G 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.