PEEK As Printed vs PEEK GF30
Polymer · grade comparison
PEEK As Printed and PEEK-GF30 are both polymer grades, compared here in the As Printed condition. PEEK-GF30 is the stronger of the two: tensile strength 165 MPa (23.9 ksi) against 85 MPa (12.3 ksi) for PEEK As Printed, about 94% more. In exchange, PEEK As Printed is the more ductile: elongation 10% versus 2.5% for PEEK-GF30. PEEK As Printed is lighter (1.29 g/cm³ vs 1.51 g/cm³ for PEEK-GF30) and PEEK-GF30 is stiffer (10 GPa vs 3.5 GPa). On the shop floor, PEEK As Printed machines more easily (good vs fair), PEEK As Printed welds better (45 vs 35 out of 100), and PEEK-GF30 sits in a lower cost tier (high, $$$$) than PEEK As Printed (specialty, $$$$$).
PEEK As PrintedChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PEEK-GF30Choose it when strength drives the design, or when the part sees heat.
PEEK As Printed vs PEEK-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
Bulk Modulus
Poisson's Ratio
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, Shore D
Hardness, Rockwell M
Hardness, Rockwell R
Physical
Density and transition temperatures.
Density
Water Absorption (24 h)
Water Absorption (Saturation)
Same in both: Melting Temperature (Tm) 343°C649 °F · Glass Transition (Tg) 143°C289 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Same in both: Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · Volume Resistivity 1×10¹⁶ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 150 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
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 Carbon (primary production)
Embodied Water
Same in both: 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 | PEEK As Printed | PEEK-GF30 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Injection molding | Yes | — |
| 3D printing | Yes | — |
| Default condition | Virgin | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 0.8 mm | — |
| Best machined surface | Ra 0.8 µm | — |
| Chrome Plating (Plastic) | Yes | — |
| Conductive Coating | Yes | — |
| Dyeing (Nylon) | Yes | — |
| EMI Shielding Coating | Yes | — |
| Painting | Yes | — |
| Primer Coating | Yes | — |
| Soft Touch Coating | Yes | — |
| Spray Painting | Yes | — |
| Tinted Coating | Yes | — |
| UV Coating | Yes | — |
| Vacuum Metallization | Yes | — |
| Waterproof Coating | Yes | — |
PEEK As Printed vs PEEK-GF30 — frequently asked
Is PEEK-GF30 stronger than PEEK As Printed?
Yes. PEEK-GF30 has a typical tensile strength of 165 MPa (23.9 ksi) against 85 MPa (12.3 ksi) for PEEK As Printed — about 94% more.
Which is cheaper, PEEK As Printed or PEEK-GF30?
PEEK-GF30 is the lower-cost material: it sits in the high tier ($$$$) while PEEK As Printed is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, PEEK As Printed or PEEK-GF30?
PEEK As Printed. Its machinability rates good (65/100) against fair (45/100) for PEEK-GF30; for welding the order is PEEK As Printed first (fair, 45/100) then PEEK-GF30 (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PEEK As Printed and PEEK-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.