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6061/SiC/10p vs SCS-6/Ti-6Al-4V

Composite · grade comparison

6061/SiC/10p and SCS-6/Ti-6Al-4V are both composite grades. SCS-6/Ti-6Al-4V is the stronger of the two: yield strength 1,100 MPa (160 ksi) against 296 MPa (42.9 ksi) for 6061/SiC/10p, about 3.7 times as much; tensile strength follows at 1,750 MPa (254 ksi) vs 338 MPa (49 ksi). In exchange, 6061/SiC/10p is the more ductile: elongation 6% versus 0.85% for SCS-6/Ti-6Al-4V. 6061/SiC/10p is lighter (2.75 g/cm³ vs 3.93 g/cm³ for SCS-6/Ti-6Al-4V) and SCS-6/Ti-6Al-4V is stiffer (205 GPa vs 81 GPa). On the shop floor, 6061/SiC/10p machines more easily (poor vs not recommended).

6061/SiC/10pChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

SCS-6/Ti-6Al-4VChoose it when strength drives the design, or when the part sees heat.

6061/SiC/10p vs SCS-6/Ti-6Al-4V: properties

6061/SiC/10pSCS-6/Ti-6Al-4V

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

81 GPa11.7 Msi
205 GPa29.7 Msi

Shear Modulus

31 GPa4.5 Msi
62 GPa9 Msi

Bulk Modulus

79 GPa11.5 Msi
—

Poisson's Ratio

0.33
0.28

Tensile Strength (Ultimate)

338 MPa49 ksi
1,750 MPa254 ksi

Yield Strength (0.2% offset)

296 MPa42.9 ksi
1,100 MPa160 ksi

Elongation at Break

6%
0.85%

Compressive Strength

400 MPa58 ksi
2,100 MPa305 ksi

Compressive Modulus

82 GPa11.9 Msi
205 GPa29.7 Msi

Flexural Strength

480 MPa69.6 ksi
1,500 MPa218 ksi

Flexural Modulus

81 GPa11.7 Msi
195 GPa28.3 Msi

Shear Strength

215 MPa31.2 ksi
290 MPa42.1 ksi

Fracture Toughness (K_IC)

18 MPa·√m16.4 ksi·√in
40 MPa·√m36.4 ksi·√in

Physical

Density and transition temperatures.

Density

2.75 g/cm³0.1 lb/in³
3.93 g/cm³0.14 lb/in³

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

175 W/m·K101 BTU/hr·ft·°F
12 W/m·K6.9 BTU/hr·ft·°F

Specific Heat Capacity

880 J/kg·K0.21 BTU/lb·°F
600 J/kg·K0.14 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

20.7 µm/m·K11.5 µin/in·°F
6.6 µm/m·K3.7 µin/in·°F

Max Service Temperature (continuous)

175°C347 °F
500°C932 °F

Max Service Temperature (short-term)

250°C482 °F
700°C1,292 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

4.5×10⁻⁸ Ω·m1.77 µΩ·in
1.3×10⁻⁶ Ω·m51.2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

55 / 100
70 / 100

UV / Weathering Resistance

95 / 100
100 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

30 / 100
5 / 100

Polishability

55 / 100
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

225 MJ/kg96,733 BTU/lb
1,300 MJ/kg558,900 BTU/lb

Embodied Carbon (primary production)

13.5 kg CO₂/kg
80 kg CO₂/kg

Embodied Water

1,200 L/kg144 gal/lb
—

Typical Recycled Content

10%
0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

123 kN·m/kg
445 kN·m/kg

Specific Stiffness (E / density)

29.5 MN·m/kg
52.2 MN·m/kg

Modulus of Resilience

541 kJ/m³
2,951 kJ/m³

Thermal Diffusivity

72.3 mm²/s
5.1 mm²/s

Thermal Shock Resistance Index

35
16

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.

1101001,000510Density (g/cm³)Yield strength (MPa) — log scale6061/SiC/10pSCS-6/Ti-6Al-4V

Manufacturing and finishing

Capability6061/SiC/10pSCS-6/Ti-6Al-4V
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

6061/SiC/10p vs SCS-6/Ti-6Al-4V — frequently asked

Is SCS-6/Ti-6Al-4V stronger than 6061/SiC/10p?

Yes. SCS-6/Ti-6Al-4V has a typical yield strength of 1,100 MPa (160 ksi) against 296 MPa (42.9 ksi) for 6061/SiC/10p — about 3.7 times as much. Tensile strength is 1,750 MPa (254 ksi) vs 338 MPa (49 ksi).

Which is cheaper, 6061/SiC/10p or SCS-6/Ti-6Al-4V?

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, 6061/SiC/10p or SCS-6/Ti-6Al-4V?

6061/SiC/10p. Its machinability rates poor (30/100) against not recommended (5/100) for SCS-6/Ti-6Al-4V.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 6061/SiC/10p and SCS-6/Ti-6Al-4V 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.