PC/ASA GF20 vs PC/ASA GF30
Polymer · PC/ASA grade comparison
PC/ASA GF20 and PC/ASA GF30 are two grades of the same polymer grade, PC/ASA: GF20 (20% glass-fiber reinforced) versus GF30 (30% glass-fiber reinforced). The chemistry is identical, so every difference below comes from the condition. PC/ASA GF30 is the stronger of the two: tensile strength 100 MPa (14.5 ksi) against 85 MPa (12.3 ksi) for PC/ASA GF20, about 18% more. In exchange, PC/ASA GF20 is the more ductile: elongation 3.5% versus 3% for PC/ASA GF30. PC/ASA GF20 is lighter (1.3 g/cm³ vs 1.37 g/cm³ for PC/ASA GF30) and PC/ASA GF30 is stiffer (7.3 GPa vs 5.2 GPa).
PC/ASA GF20Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
PC/ASA GF30Choose it when strength drives the design.
PC/ASA GF20 vs PC/ASA 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)
Elongation at Break
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Same in both: Poisson's Ratio 0.38 · Yield Strength (0.2% offset) 54 MPa7.8 ksi · Compressive Strength 75 MPa10.9 ksi · Shear Strength 40 MPa5.8 ksi · Fracture Toughness (K_IC) 3 MPa·√m2.7 ksi·√in · Hardness, Shore D 80 Shore D · Hardness, Rockwell M 72 HRM · Hardness, Rockwell R 112 HRR
Physical
Density and transition temperatures.
Density
Same in both: Glass Transition (Tg) 120°C248 °F · Water Absorption (24 h) 0.2% · Water Absorption (Saturation) 0.6%
Thermal
How each material carries heat and how hot it can run.
Thermal Expansion (CTE, 20–100 °C)
Heat Deflection Temp. @ 1.8 MPa
Same in both: Thermal Conductivity 0.2 W/m·K0.12 BTU/hr·ft·°F · Specific Heat Capacity 1,300 J/kg·K0.31 BTU/lb·°F · Max Service Temperature (continuous) 95°C203 °F · Min Service Temperature -40°C-40 °F · Heat Deflection Temp. @ 0.45 MPa 115°C239 °F · Vicat Softening Point (B50) 128°C262 °F · Limiting Oxygen Index 24% · Max Service Temperature (short-term) 120°C248 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹⁴ Ω·m3.94×10²¹ µΩ·in · Dielectric Strength 28 kV/mm711 V/mil · Dielectric Constant (1 MHz) 3 · Dissipation Factor (1 MHz) 0.009 · Volume Resistivity 1×10¹⁶ Ω·cm · Surface Resistivity 1×10¹⁶ Ω · Comparative Tracking Index (CTI) 250 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 80 / 100 · UV / Weathering Resistance 88 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Mold Shrinkage
Same in both: Weldability 55 / 100 · Formability (cold) 55 / 100 · Polishability 70 / 100 · Melt Flow Rate 15 g/10 min · Processing Melt Temperature (typ.) 260°C500 °F · Mold Temperature (typ.) 70°C158 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 105 MJ/kg45,142 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 250 L/kg30 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.
PC/ASA GF20 vs PC/ASA GF30 — frequently asked
Is PC/ASA GF30 stronger than PC/ASA GF20?
Yes. PC/ASA GF30 has a typical tensile strength of 100 MPa (14.5 ksi) against 85 MPa (12.3 ksi) for PC/ASA GF20 — about 18% more.
Which grade does FabDigit quote by default, GF20 or GF30?
UNF is the default PC/ASA condition in the FabDigit quote flow (neither GF20 nor GF30). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, PC/ASA GF20 or PC/ASA GF30?
PC/ASA GF20. Its machinability rates good (55/100) against fair (50/100) for PC/ASA GF30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in PC/ASA GF20 and PC/ASA 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.