Comparison

Mycelium Composite vs ABS

A side-by-side comparison of Mycelium Composite Material, Structural Grade V and Acrylonitrile Butadiene Styrene.

Property

Mycelium Composite

ABS

Physical

Density

0.1 - 0.5 g/cm³

1.04 – 1.07 g/cm³

Water Absorption (24h)

2.0-5.0 %

0.20 – 0.45 %

Transparency

Opaque

Shrinkage

Varies with growth process

0.4 – 0.9 %

Specific Gravity

—

1.05

Surface Finish

—

Matte to glossy

Mechanical

Young's Modulus

Highly variable (depends on density and substrate)

1.8 – 2.5 GPa

Tensile Strength

Highly variable

40 – 50 MPa

Elongation at Break

Highly variable

10 – 50 %

Impact Strength (Izod)

Highly variable

200 – 400 J/m

Flexural Strength

—

60 – 80 MPa

Hardness (Rockwell R)

—

100 – 115

Thermal

Glass Transition Temperature

Not applicable (natural material)

105 °C

Melting Point

None (decomposes)

Amorphous (no true Tm)

Continuous Service Temperature

60 °C

70 – 90 °C

Heat Deflection Temperature

Not applicable

85 – 100 °C

Thermal Conductivity

—

0.17 W/m·K

CTE

—

80 – 100 × 10⁻⁶ /K

Electrical

Dielectric Constant

Variable

2.7 – 3.2

Volume Resistivity

Variable

10¹⁶ Ω·cm

Dielectric Strength

Low to moderate

15 – 20 kV/mm

Surface Resistivity

—

10¹⁵ Ω

Chemical resistance

Acids

Sensitive

—

Bases

Sensitive

Good

Solvents

Resistant to most common solvents but can be degraded by strong acids/bases

—

UV Resistance

Poor

Poor (unless stabilized)

Acids (dilute)

—

Good

Alcohols

—

Good

Oils & Greases

—

Fair

Gasoline

—

Poor

Acetone

—

Attacks / dissolves

Weathering

—

Poor without stabilizers

Sustainability

Recyclability

Biodegradable (compost)

Recyclable (mechanical)

Recycling Code

7 (Other)

Carbon Footprint

Negative to very low (utilizes waste streams, sequesters carbon)

~3.1 kg CO₂e / kg

Bio-based Content

—

0 %