PSU-GF30 GF30 vs PSU-GF30 GF30-STOCK
Polymer · PSU-GF30 grade comparison
PSU-GF30 GF30 and PSU-GF30 GF30-STOCK are two grades of the same polymer grade, PSU-GF30: GF30 (30% glass-fiber reinforced injection molding grade) versus GF30-STOCK (GF30 extruded / compression-molded stock shape). The chemistry is identical, so every difference below comes from the condition. PSU-GF30 GF30 is the stronger of the two: tensile strength 108 MPa (15.7 ksi) against 90 MPa (13.1 ksi) for PSU-GF30 GF30-STOCK, about 20% more. In exchange, PSU-GF30 GF30-STOCK is the more ductile: elongation 3% versus 2.5% for PSU-GF30 GF30. PSU-GF30 GF30 is stiffer (8.8 GPa vs 7 GPa). On the shop floor, PSU-GF30 GF30 welds better (fair vs poor).
PSU-GF30 GF30Choose it when strength drives the design, or when it will be welded.
PSU-GF30 GF30-STOCKChoose it when the part is bent, formed or impact-loaded.
PSU-GF30 GF30 vs PSU-GF30 GF30-STOCK: 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.
PSU-GF30 GF30PSU-GF30 GF30-STOCK
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Shear Strength
Izod Impact, Notched
Hardness, Rockwell M
Hardness, Rockwell R
Same in both: Shear Modulus 3.2 GPa0.46 Msi · Poisson's Ratio 0.38 · Compressive Modulus 7.5 GPa1.1 Msi · Fracture Toughness (K_IC) 3 MPa·√m2.7 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 1.49 g/cm³0.05 lb/in³ · Glass Transition (Tg) 185°C365 °F · Water Absorption (24 h) 0.22% · Water Absorption (Saturation) 0.6%
Thermal
How each material carries heat and how hot it can run.
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Same in both: Thermal Conductivity 0.3 W/m·K0.17 BTU/hr·ft·°F · Specific Heat Capacity 1,100 J/kg·K0.26 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 22 µm/m·K12.2 µin/in·°F · Max Service Temperature (continuous) 165°C329 °F · Min Service Temperature -100°C-148 °F · Limiting Oxygen Index 32% · Max Service Temperature (short-term) 190°C374 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Dielectric Strength 19 kV/mm483 V/mil · Dielectric Constant (1 MHz) 3.7 · Dissipation Factor (1 MHz) 0.006 · Volume Resistivity 1×10¹⁵ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 150 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Corrosion Resistance 85 / 100 · UV / Weathering Resistance 30 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Polishability 30 / 100 · Mold Shrinkage 0.3% · Melt Flow Rate 6 g/10 min · Processing Melt Temperature (typ.) 355°C671 °F · Mold Temperature (typ.) 145°C293 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 130 MJ/kg55,890 BTU/lb · Embodied Carbon (primary production) 7.5 kg CO₂/kg · 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.
PSU-GF30 GF30 vs PSU-GF30 GF30-STOCK — frequently asked
Is PSU-GF30 GF30 stronger than PSU-GF30 GF30-STOCK?
Yes. PSU-GF30 GF30 has a typical tensile strength of 108 MPa (15.7 ksi) against 90 MPa (13.1 ksi) for PSU-GF30 GF30-STOCK — about 20% more.
Which grade does FabDigit quote by default, GF30 or GF30-STOCK?
GF30 is the default PSU-GF30 condition in the FabDigit quote flow. 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 welds better, PSU-GF30 GF30 or PSU-GF30 GF30-STOCK?
PSU-GF30 GF30. Its weldability rates fair (40/100) against poor (25/100) for PSU-GF30 GF30-STOCK.
Ready to make it?
Upload a CAD file and FabDigit prices the part in PSU-GF30 GF30 and PSU-GF30 GF30-STOCK 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.