PEEK-Medical-Grade BAS vs PEEK-Medical-Grade GF30
Polymer · PEEK-Medical-Grade grade comparison
PEEK-Medical-Grade BAS and PEEK-Medical-Grade GF30 are two grades of the same polymer grade, PEEK-Medical-Grade: BAS (image-contrast / radiopaque) versus GF30 (30% glass fibre reinforced medical grade). The chemistry is identical, so every difference below comes from the condition. PEEK-Medical-Grade GF30 is the stronger of the two: yield strength 98 MPa (14.2 ksi) against 88 MPa (12.8 ksi) for PEEK-Medical-Grade BAS, about 11% more; tensile strength follows at 165 MPa (23.9 ksi) vs 90 MPa (13.1 ksi). In exchange, PEEK-Medical-Grade BAS is the more ductile: elongation 12% versus 2.5% for PEEK-Medical-Grade GF30. PEEK-Medical-Grade GF30 is stiffer (10.5 GPa vs 4.3 GPa) and PEEK-Medical-Grade GF30 conducts heat better (0.43 W/m·K vs 0.3 W/m·K). On the shop floor, PEEK-Medical-Grade BAS machines more easily (good vs fair) and PEEK-Medical-Grade GF30 welds better (good vs fair).
PEEK-Medical-Grade BASChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
PEEK-Medical-Grade GF30Choose it when strength drives the design, or when it will be welded.
PEEK-Medical-Grade BAS vs PEEK-Medical-Grade 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.
PEEK-Medical-Grade BASPEEK-Medical-Grade GF30
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 4 GPa0.62 Msi · Poisson's Ratio 0.4 · Compressive Modulus 3.6 GPa0.52 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) 0.14% · Water Absorption (Saturation) 0.45%
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Heat Deflection Temp. @ 1.8 MPa
Limiting Oxygen Index
Same in both: Specific Heat Capacity 1,340 J/kg·K0.32 BTU/lb·°F · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -60°C-76 °F · Heat Deflection Temp. @ 0.45 MPa 315°C599 °F · Vicat Softening Point (B50) 315°C599 °F · Max Service Temperature (short-term) 300°C572 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Dielectric Strength 22 kV/mm559 V/mil · Dielectric Constant (1 MHz) 3.2 · Dissipation Factor (1 MHz) 0.003 · 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
Same in both: UV / Weathering Resistance 35 / 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 80 / 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) 13 kg CO₂/kg · Embodied Water 600 L/kg71.9 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-Medical-Grade BAS vs PEEK-Medical-Grade GF30 — frequently asked
Is PEEK-Medical-Grade GF30 stronger than PEEK-Medical-Grade BAS?
Yes. PEEK-Medical-Grade GF30 has a typical yield strength of 98 MPa (14.2 ksi) against 88 MPa (12.8 ksi) for PEEK-Medical-Grade BAS — about 11% more. Tensile strength is 165 MPa (23.9 ksi) vs 90 MPa (13.1 ksi).
Which grade does FabDigit quote by default, BAS 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-Medical-Grade BAS or PEEK-Medical-Grade GF30?
PEEK-Medical-Grade BAS. Its machinability rates good (62/100) against fair (45/100) for PEEK-Medical-Grade GF30; for welding the order is PEEK-Medical-Grade GF30 first (good, 60/100) then PEEK-Medical-Grade BAS (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PEEK-Medical-Grade BAS and PEEK-Medical-Grade 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.