POM-C GF30 vs POM-C MoS2
Polymer · POM-C grade comparison
POM-C GF30 and POM-C MoS2 are two grades of the same polymer grade, POM-C: GF30 (30% glass-fiber reinforced) versus MoS2 (molybdenum disulphide lubricated). The chemistry is identical, so every difference below comes from the condition. POM-C GF30 is the stronger of the two: yield strength 63 MPa (9.14 ksi) against 58 MPa (8.41 ksi) for POM-C MoS2, about 9% more; tensile strength follows at 130 MPa (18.9 ksi) vs 60 MPa (8.7 ksi). In exchange, POM-C MoS2 is the more ductile: elongation 18% versus 2.5% for POM-C GF30. POM-C MoS2 is lighter (1.44 g/cm³ vs 1.61 g/cm³ for POM-C GF30) and POM-C GF30 is stiffer (9 GPa vs 3 GPa). On the shop floor, POM-C MoS2 machines more easily (excellent vs fair) and POM-C GF30 welds better (fair vs poor).
POM-C GF30Choose it when strength drives the design, or when the part sees heat.
POM-C MoS2Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
POM-C GF30 vs POM-C MoS2: 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)
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
Hardness, Rockwell R
Same in both: Shear Modulus 1.1 GPa0.15 Msi · Bulk Modulus 3 GPa0.46 Msi · Poisson's Ratio 0.35 · Compressive Modulus 2.7 GPa0.39 Msi
Physical
Density and transition temperatures.
Density
Same in both: Melting Temperature (Tm) 166°C331 °F · Glass Transition (Tg) -60°C-76 °F · Water Absorption (24 h) 0.22% · Water Absorption (Saturation) 0.8% · Refractive Index 1.48
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Heat Deflection Temp. @ 1.8 MPa
Same in both: Specific Heat Capacity 1,470 J/kg·K0.35 BTU/lb·°F · Min Service Temperature -50°C-58 °F · Heat Deflection Temp. @ 0.45 MPa 158°C316 °F · Vicat Softening Point (B50) 158°C316 °F · Limiting Oxygen Index 16% · Max Service Temperature (short-term) 140°C284 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Dielectric Strength 20 kV/mm508 V/mil · Dielectric Constant (1 MHz) 3.7 · Dissipation Factor (1 MHz) 0.005 · Volume Resistivity 1×10¹⁴ Ω·cm · Surface Resistivity 1×10¹⁴ Ω · Comparative Tracking Index (CTI) 600 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 30 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Mold Shrinkage
Same in both: Polishability 55 / 100 · Melt Flow Rate 9 g/10 min · Processing Melt Temperature (typ.) 200°C392 °F · Mold Temperature (typ.) 90°C194 °F
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 100 MJ/kg42,992 BTU/lb · Embodied Carbon (primary production) 3.9 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.
POM-C GF30 vs POM-C MoS2 — frequently asked
Is POM-C GF30 stronger than POM-C MoS2?
Yes. POM-C GF30 has a typical yield strength of 63 MPa (9.14 ksi) against 58 MPa (8.41 ksi) for POM-C MoS2 — about 9% more. Tensile strength is 130 MPa (18.9 ksi) vs 60 MPa (8.7 ksi).
Which grade does FabDigit quote by default, GF30 or MoS2?
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, POM-C GF30 or POM-C MoS2?
POM-C MoS2. Its machinability rates excellent (88/100) against fair (50/100) for POM-C GF30; for welding the order is POM-C GF30 first (fair, 35/100) then POM-C MoS2 (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in POM-C GF30 and POM-C MoS2 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.