High Strength Composite · Micro-Carbon Reinforced Nylon
Onyx
Onyx is a high strength composite composite — carbon-filled tough nylon. Typical values: 36 MPa yield, 1.2 g/cm³, rated to 145 °C. Available for 3D printing at FabDigit.
Properties
Typical room-temperature values for the default supply condition. Metric first, imperial in gray. The bars show where Onyx sits against the other 12 composite grades in the catalog.
Datasheet
| Yield strength | 36 MPa5 ksi |
|---|---|
| Tensile strength | 36 MPa5 ksi |
| Hardness | 100 HRR |
| Density | 1.2 g/cm³0.043 lb/in³ |
| Specific strength (yield ÷ density) | 30 |
| Min service temp | -150 °C-238 °F |
| Max service temp | 145 °C293 °F |
| Electrical conductivity | < 0.001 % IACSinsulator |
| Machinability | Fair40 / 100 |
| Weldability | Not recommended5 / 100 |
| Formability | Not recommended5 / 100 |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other composite grades
Strength versus weight in the composite family
Yield strength against density for every composite grade FabDigit runs. Onyx is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to Onyx. Design inside these and the part quotes instantly; outside them it routes to an engineer.
3D printing
| Technologies | FDM |
|---|---|
| Layer height | 20 – 60 µmdefault 30 µm |
| Minimum wall / feature | 0.5 / 0.3 mm |
| Build envelope | 250 × 250 × 325 mm |
| Supports | Yes |
| Anisotropy | Mild |
| Mandatory post-processing | heat treatment + HIP |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on Onyx, ranked by how often they make sense for this grade.
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for Onyx
Coatings and treatments compatible with composite on the processes Onyx runs on. Pick them in the quote configurator or call them out on the drawing.
Coating
- Clear Coating
- Conductive Coating
- EMI Shielding Coating
- Primer Coating
- Soft Touch Coating
- Tinted Coating
- UV Coating
- Waterproof Coating
Coloring
- Dyeing (Nylon)
- Painting
Metallization / Functional
- Vacuum Metallization
Equivalent designations
Standards and trade names that resolve to Onyx in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Markforged OnyxOnyx CF
- Also called
- Nylon CF Filament
Stock forms
Raw-material forms FabDigit sources Onyx in.
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.