6061/SiC/10p vs W75Cu25
Composite · grade comparison
6061/SiC/10p and W75Cu25 are both composite grades. W75Cu25 is the stronger of the two: yield strength 380 MPa (55.1 ksi) against 296 MPa (42.9 ksi) for 6061/SiC/10p, about 28% more; tensile strength follows at 620 MPa (89.9 ksi) vs 338 MPa (49 ksi). In exchange, 6061/SiC/10p is the more ductile: elongation 6% versus 5% for W75Cu25. 6061/SiC/10p is lighter (2.75 g/cm³ vs 14.8 g/cm³ for W75Cu25) and W75Cu25 is stiffer (250 GPa vs 81 GPa).
6061/SiC/10pChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
W75Cu25Choose it when strength drives the design, or when the part sees heat.
6061/SiC/10p vs W75Cu25: 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
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
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 -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Volume Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Polishability
Same in both: Machinability 30 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
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 | 6061/SiC/10p | W75Cu25 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
6061/SiC/10p vs W75Cu25 — frequently asked
Is W75Cu25 stronger than 6061/SiC/10p?
Yes. W75Cu25 has a typical yield strength of 380 MPa (55.1 ksi) against 296 MPa (42.9 ksi) for 6061/SiC/10p — about 28% more. Tensile strength is 620 MPa (89.9 ksi) vs 338 MPa (49 ksi).
Which is cheaper, 6061/SiC/10p or W75Cu25?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose 6061/SiC/10p over W75Cu25?
Pick 6061/SiC/10p when the part is bent, formed or impact-loaded, or when weight is the constraint. Pick W75Cu25 when strength drives the design, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 6061/SiC/10p and W75Cu25 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.