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CLT vs Plywood

Natural Material · grade comparison

CLT and Plywood are both natural material grades. Plywood is the stronger of the two: tensile strength 30 MPa (4.35 ksi) against 16 MPa (2.32 ksi) for CLT, about 88% more. CLT is lighter (0.47 g/cm³ vs 0.55 g/cm³ for Plywood) and CLT is stiffer (11 GPa vs 9 GPa). On the shop floor, Plywood sits in a lower cost tier (budget, $) than CLT (standard, $$).

CLTChoose it when weight is the constraint.

PlywoodChoose it when strength drives the design, or when the part sees heat.

CLT vs Plywood: properties

CLTPlywood

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

11 GPa1.6 Msi
9 GPa1.3 Msi

Shear Modulus

0.69 GPa0.1 Msi
0.6 GPa0.09 Msi

Poisson's Ratio

0.3
0.18

Tensile Strength (Ultimate)

16 MPa2.3 ksi
30 MPa4.4 ksi

Elongation at Break

0.9%
1%

Compressive Strength

21 MPa3 ksi
25 MPa3.6 ksi

Flexural Strength

24 MPa3.5 ksi
45 MPa6.5 ksi

Shear Strength

4 MPa0.51 ksi
5 MPa0.73 ksi

Fracture Toughness (K_IC)

0.4 MPa·√m0.36 ksi·√in
0.8 MPa·√m0.73 ksi·√in

Physical

Density and transition temperatures.

Density

0.47 g/cm³0.02 lb/in³
0.55 g/cm³0.02 lb/in³

Porosity

65%
58%

Thermal

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

Thermal Conductivity

0.12 W/m·K0.07 BTU/hr·ft·°F
0.11 W/m·K0.06 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

4.5 µm/m·K2.5 µin/in·°F
6.5 µm/m·K3.6 µin/in·°F

Max Service Temperature (continuous)

55°C131 °F
65°C149 °F

Min Service Temperature

-50°C-58 °F
-40°C-40 °F

Same in both: Specific Heat Capacity 1,600 J/kg·K0.38 BTU/lb·°F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10⁸ Ω·m3.94×10¹⁵ µΩ·in
1×10⁹ Ω·m3.94×10¹⁶ µΩ·in

Dielectric Strength

4 kV/mm102 V/mil
3 kV/mm76.2 V/mil

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Corrosion Resistance 45 / 100

Manufacturability

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

Machinability

92 / 100
88 / 100

Polishability

35 / 100
25 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

9 MJ/kg3,869 BTU/lb
13 MJ/kg5,374 BTU/lb

Embodied Carbon (primary production)

0.42 kg CO₂/kg
0.9 kg CO₂/kg

Typical Recycled Content

2%
5%

Embodied Water

—
550 L/kg65.9 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

34 kN·m/kg
55 kN·m/kg

Specific Stiffness (E / density)

23.4 MN·m/kg
16.4 MN·m/kg

Thermal Diffusivity

0.2 mm²/s
0.1 mm²/s

Same in both: Thermal Shock Resistance Index 0

Strength versus weight

Yield strength against density for every natural material grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

Manufacturing and finishing

CapabilityCLTPlywood
Default condition——
Relative cost$$ Standard$ Budget
Min. machined wall——
Best machined surface——

CLT vs Plywood — frequently asked

Is Plywood stronger than CLT?

Yes. Plywood has a typical tensile strength of 30 MPa (4.35 ksi) against 16 MPa (2.32 ksi) for CLT — about 88% more.

Which is cheaper, CLT or Plywood?

Plywood is the lower-cost material: it sits in the budget tier ($) while CLT is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

When should I choose CLT over Plywood?

Pick CLT when weight is the constraint. Pick Plywood 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 CLT and Plywood 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.