ABS GF15 vs ABS GF30
Polymer · ABS grade comparison
ABS GF15 and ABS GF30 are two grades of the same polymer grade, ABS: GF15 (15 % glass-fibre reinforced) versus GF30 (30 % glass-fibre reinforced). The chemistry is identical, so every difference below comes from the condition. ABS GF30 is the stronger of the two: tensile strength 95 MPa (13.8 ksi) against 72 MPa (10.4 ksi) for ABS GF15, about 32% more. In exchange, ABS GF15 is the more ductile: elongation 3% versus 2.3% for ABS GF30. ABS GF15 is lighter (1.13 g/cm³ vs 1.28 g/cm³ for ABS GF30) and ABS GF30 is stiffer (7.5 GPa vs 5 GPa). On the shop floor, ABS GF15 machines more easily (66 vs 55 out of 100).
ABS GF15Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
ABS GF30Choose it when strength drives the design.
ABS GF15 vs ABS 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: Shear Modulus 0.85 GPa0.12 Msi · Bulk Modulus 4 GPa0.51 Msi · Poisson's Ratio 0.35 · Yield Strength (0.2% offset) 42 MPa6.1 ksi · Compressive Strength 65 MPa9.4 ksi · Compressive Modulus 2.2 GPa0.32 Msi · Shear Strength 34 MPa4.9 ksi · Fracture Toughness (K_IC) 3 MPa·√m2.7 ksi·√in · Hardness, Shore D 78 Shore D · Hardness, Rockwell R 105 HRR
Physical
Density and transition temperatures.
Density
Same in both: Glass Transition (Tg) 105°C221 °F · Water Absorption (24 h) 0.3% · Water Absorption (Saturation) 1%
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
Same in both: Specific Heat Capacity 1,450 J/kg·K0.35 BTU/lb·°F · Max Service Temperature (continuous) 75°C167 °F · Min Service Temperature -20°C-4 °F · Heat Deflection Temp. @ 0.45 MPa 95°C203 °F · Vicat Softening Point (B50) 100°C212 °F · Limiting Oxygen Index 19% · Max Service Temperature (short-term) 95°C203 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Dielectric Strength 16 kV/mm406 V/mil · Dielectric Constant (1 MHz) 2.9 · Dissipation Factor (1 MHz) 0.009 · Volume Resistivity 1×10¹⁵ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 600 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 68 / 100 · UV / Weathering Resistance 22 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Mold Shrinkage
Same in both: Weldability 78 / 100 · Formability (cold) 82 / 100 · Polishability 60 / 100 · Melt Flow Rate 20 g/10 min · Processing Melt Temperature (typ.) 235°C455 °F · Mold Temperature (typ.) 60°C140 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 95 MJ/kg40,843 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 5%
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.
ABS GF15 vs ABS GF30 — frequently asked
Is ABS GF30 stronger than ABS GF15?
Yes. ABS GF30 has a typical tensile strength of 95 MPa (13.8 ksi) against 72 MPa (10.4 ksi) for ABS GF15 — about 32% more.
Which grade does FabDigit quote by default, GF15 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, ABS GF15 or ABS GF30?
ABS GF15, by a small margin. Both rate good for machinability — 66/100 against 55/100 for ABS GF30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ABS GF15 and ABS 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.