. 2019 Feb 22;22(1):8–53. doi: 10.1080/15685551.2019.1565664

Table 3.

Summary of properties of CNTs.

Mechanical properties	(1) Young’s modulus of SWCNTs ~ 1 TPa (2) Young’s modulus of MWCNTs ~ 1–12 TPa (3) Tensile strength of SWCNT ropes ~60 GPa Tensile strength of MWCNT ~0.15 TPa
Thermal properties at room temperature	Thermal conductivity of SWCNT ~ 1750–5800 W/mk Thermal conductivity of MWCNT > 3000 W/mk
Electronic properties	SWCNT bandgap When n-m is divisible by 3(0 eV, metallic) When n-m is not divisible by 3(0.4–2 eV, semiconducting) MWCNTs bandgap ~0 eV (non-semiconducting)
Electrical properties	Typical resistivity of SWCNT and MWCNTs = 10⁻⁶ Ωm Typical maximum current density = 10^{7 −1}0⁹ Acm⁻² Typical quantized conductance (measured) = 12.9 kΩ⁻¹

Mechanical properties

(1) Young’s modulus of SWCNTs ~ 1 TPa
(2) Young’s modulus of MWCNTs ~ 1–12 TPa
(3) Tensile strength of SWCNT ropes ~60 GPa
Tensile strength of MWCNT ~0.15 TPa

Thermal properties at room temperature

Thermal conductivity of SWCNT ~ 1750–5800 W/mk
Thermal conductivity of MWCNT > 3000 W/mk

Electronic properties

SWCNT bandgap

When n-m is divisible by 3(0 eV, metallic)
When n-m is not divisible by 3(0.4–2 eV, semiconducting)

MWCNTs bandgap ~0 eV (non-semiconducting)

Electrical properties

Typical resistivity of SWCNT and MWCNTs = 10⁻⁶ Ωm
Typical maximum current density = 10^{7 −1}0⁹ Acm⁻²
Typical quantized conductance (measured) = 12.9 kΩ⁻¹