POM-C GF30 vs POM-C Metal Detectable
Polymer · POM-C grade comparison
POM-C GF30 and POM-C Metal Detectable are two grades of the same polymer grade, POM-C: GF30 (30% glass-fiber reinforced) versus Metal Detectable (x-ray/metal-detectable food-contact grade). 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 50 MPa (7.25 ksi) for POM-C Metal Detectable, about 26% more; tensile strength follows at 130 MPa (18.9 ksi) vs 50 MPa (7.25 ksi). In exchange, POM-C Metal Detectable is the more ductile: elongation 8% versus 2.5% for POM-C GF30. POM-C GF30 is stiffer (9 GPa vs 3.2 GPa) and POM-C GF30 runs hotter in service (110°C vs 100°C continuous). On the shop floor, POM-C Metal Detectable machines more easily (very good 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 Metal DetectableChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
POM-C GF30 vs POM-C Metal Detectable: 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.
POM-C GF30POM-C Metal Detectable
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. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Same in both: Specific Heat Capacity 1,470 J/kg·K0.35 BTU/lb·°F · Min Service Temperature -50°C-58 °F · Max Service Temperature (short-term) 140°C284 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Resistivity 1×10¹² Ω·m3.94×10¹⁹ µΩ·in · 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
Melt Flow Rate
Same in both: Polishability 55 / 100 · 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 Metal Detectable — frequently asked
Is POM-C GF30 stronger than POM-C Metal Detectable?
Yes. POM-C GF30 has a typical yield strength of 63 MPa (9.14 ksi) against 50 MPa (7.25 ksi) for POM-C Metal Detectable — about 26% more. Tensile strength is 130 MPa (18.9 ksi) vs 50 MPa (7.25 ksi).
Which grade does FabDigit quote by default, GF30 or Metal Detectable?
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 Metal Detectable?
POM-C Metal Detectable. Its machinability rates very good (75/100) against fair (50/100) for POM-C GF30; for welding the order is POM-C GF30 first (fair, 35/100) then POM-C Metal Detectable (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in POM-C GF30 and POM-C Metal Detectable 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.