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Hard Maple vs Walnut

Natural Material · grade comparison

Hard Maple and Walnut are both natural material grades. Hard Maple is the stronger of the two: tensile strength 108 MPa (15.7 ksi) against 100 MPa (14.5 ksi) for Walnut, about 8% more. Hard Maple is the more ductile: elongation 1.5% versus 1.2% for Walnut. Walnut is lighter (0.61 g/cm³ vs 0.7 g/cm³ for Hard Maple) and Hard Maple is stiffer (12.6 GPa vs 11.6 GPa). On the shop floor, Walnut machines more easily (excellent vs very good).

Hard MapleChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

WalnutChoose it when weight is the constraint, or when the part is machined in volume.

Hard Maple vs Walnut: properties

Hard MapleWalnut

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

12.6 GPa1.8 Msi
11.6 GPa1.7 Msi

Shear Modulus

1.1 GPa0.16 Msi
1 GPa0.15 Msi

Poisson's Ratio

0.42
0.5

Tensile Strength (Ultimate)

108 MPa15.7 ksi
100 MPa14.5 ksi

Elongation at Break

1.5%
1.2%

Compressive Strength

54 MPa7.8 ksi
52 MPa7.6 ksi

Flexural Strength

109 MPa15.8 ksi
101 MPa14.6 ksi

Shear Strength

16 MPa2.3 ksi
9 MPa1.4 ksi

Same in both: Fracture Toughness (K_IC) 0.5 MPa·√m0.46 ksi·√in

Physical

Density and transition temperatures.

Density

0.7 g/cm³0.03 lb/in³
0.61 g/cm³0.02 lb/in³

Porosity

53%
59%

Thermal

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

Thermal Conductivity

0.16 W/m·K0.09 BTU/hr·ft·°F
0.12 W/m·K0.07 BTU/hr·ft·°F

Specific Heat Capacity

1,900 J/kg·K0.45 BTU/lb·°F
1,600 J/kg·K0.38 BTU/lb·°F

Same in both: Thermal Expansion (CTE, 20–100 °C) 4.5 µm/m·K2.5 µin/in·°F · Max Service Temperature (continuous) 90°C194 °F · Min Service Temperature -60°C-76 °F

Electrical

Conductivity and insulation.

Dielectric Strength

—
3 kV/mm76.2 V/mil

Same in both: Electrical Resistivity 1×10⁹ Ω·m3.94×10¹⁶ µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

30 / 100
55 / 100

Manufacturability

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

Machinability

70 / 100
88 / 100

Polishability

85 / 100
82 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

12 MJ/kg5,159 BTU/lb
10 MJ/kg4,299 BTU/lb

Embodied Carbon (primary production)

0.55 kg CO₂/kg
0.5 kg CO₂/kg

Typical Recycled Content

0%
5%

Same in both: Embodied Water 600 L/kg71.9 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

154 kN·m/kg
164 kN·m/kg

Specific Stiffness (E / density)

18 MN·m/kg
19 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

CapabilityHard MapleWalnut
Default condition——
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Hard Maple vs Walnut — frequently asked

Is Hard Maple stronger than Walnut?

Yes. Hard Maple has a typical tensile strength of 108 MPa (15.7 ksi) against 100 MPa (14.5 ksi) for Walnut — about 8% more.

Which is cheaper, Hard Maple or Walnut?

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

Which is easier to machine, Hard Maple or Walnut?

Walnut. Its machinability rates excellent (88/100) against very good (70/100) for Hard Maple.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Hard Maple and Walnut 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.