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Hardboard vs LVL

Natural Material · grade comparison

Hardboard and LVL are both natural material grades. LVL is the stronger of the two: tensile strength 42 MPa (6.09 ksi) against 20 MPa (2.9 ksi) for Hardboard, about 110% more. In exchange, Hardboard is the more ductile: elongation 1% versus 0.8% for LVL. LVL is lighter (0.55 g/cm³ vs 0.95 g/cm³ for Hardboard) and LVL is stiffer (13.8 GPa vs 4.2 GPa). On the shop floor, LVL machines more easily (excellent vs very good).

HardboardChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.

LVLChoose it when strength drives the design, or when weight is the constraint.

Hardboard vs LVL: properties

HardboardLVL

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

4.2 GPa0.61 Msi
13.8 GPa2 Msi

Shear Modulus

1.3 GPa0.19 Msi
0.86 GPa0.12 Msi

Poisson's Ratio

0.25
0.35

Tensile Strength (Ultimate)

20 MPa2.9 ksi
42 MPa6.1 ksi

Elongation at Break

1%
0.8%

Compressive Strength

28 MPa4.1 ksi
45 MPa6.5 ksi

Flexural Strength

38 MPa5.5 ksi
60 MPa8.7 ksi

Fracture Toughness (K_IC)

0.7 MPa·√m0.64 ksi·√in
0.5 MPa·√m0.46 ksi·√in

Same in both: Shear Strength 7 MPa0.94 ksi

Physical

Density and transition temperatures.

Density

0.95 g/cm³0.03 lb/in³
0.55 g/cm³0.02 lb/in³

Porosity

32%
62%

Thermal

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

Thermal Conductivity

0.15 W/m·K0.09 BTU/hr·ft·°F
0.13 W/m·K0.08 BTU/hr·ft·°F

Specific Heat Capacity

1,400 J/kg·K0.33 BTU/lb·°F
1,600 J/kg·K0.38 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

12 µm/m·K6.7 µin/in·°F
4 µm/m·K2.2 µin/in·°F

Max Service Temperature (continuous)

80°C176 °F
50°C122 °F

Same in both: Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10⁷ Ω·m3.94×10¹⁴ µΩ·in
1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in

Dielectric Strength

2 kV/mm50.8 V/mil
4 kV/mm102 V/mil

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

30 / 100
35 / 100

Manufacturability

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

Machinability

70 / 100
85 / 100

Polishability

25 / 100
35 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

16 MJ/kg6,879 BTU/lb
11 MJ/kg4,729 BTU/lb

Embodied Carbon (primary production)

0.85 kg CO₂/kg
0.45 kg CO₂/kg

Embodied Water

25 L/kg3 gal/lb
700 L/kg83.9 gal/lb

Typical Recycled Content

85%
5%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

21 kN·m/kg
76 kN·m/kg

Specific Stiffness (E / density)

4.4 MN·m/kg
25.1 MN·m/kg

Same in both: Thermal Diffusivity 0.1 mm²/s · 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

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

Hardboard vs LVL — frequently asked

Is LVL stronger than Hardboard?

Yes. LVL has a typical tensile strength of 42 MPa (6.09 ksi) against 20 MPa (2.9 ksi) for Hardboard — about 110% more.

Which is cheaper, Hardboard or LVL?

Both sit in the same relative cost tier ($, budget); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, Hardboard or LVL?

LVL. Its machinability rates excellent (85/100) against very good (70/100) for Hardboard.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Hardboard and LVL 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.