P100 vs T300
Composite · grade comparison
P100 and T300 are both composite grades. T300 is the stronger of the two: tensile strength 3,530 MPa (512 ksi) against 2,410 MPa (350 ksi) for P100, about 46% more. T300 is the more ductile: elongation 1.5% versus 0.32% for P100. T300 is lighter (1.76 g/cm³ vs 2.15 g/cm³ for P100) and P100 is stiffer (758 GPa vs 230 GPa). On the shop floor, T300 machines more easily (poor vs not recommended).
P100Choose it when the part sees heat.
T300Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
P100 vs T300: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all composite 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 composite 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
Compressive Strength
Flexural Strength
Shear Strength
Physical
Density and transition temperatures.
Density
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Max Service Temperature (short-term)
Same in both: Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 95 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every composite grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | P100 | T300 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
P100 vs T300 — frequently asked
Is T300 stronger than P100?
Yes. T300 has a typical tensile strength of 3,530 MPa (512 ksi) against 2,410 MPa (350 ksi) for P100 — about 46% more.
Which is cheaper, P100 or T300?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, P100 or T300?
T300. Its machinability rates poor (25/100) against not recommended (12/100) for P100.
Ready to make it?
Upload a CAD file and FabDigit prices the part in P100 and T300 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.