Thermal conductivity of sheath material

The sources are:

The values for copper and aluminium are form the standard IEC 60287-2-1, Figure 4, stating the thermal resistivity, which is the inverse of the thermal conductivity.
Physical and mechanical properties for naturally hard copper alloys such as Bronze and Brass can be found in the electrical-contacts-wiki
The other values are average values from various sources such as values at 20°C (or approximately) taken from engineeringtoolbox.com

Symbol

$k_{sh}$

Unit

W/(m.K)

Related

$M_{sh}$

Material of sheath

$\zeta_M$

Density of material [g/cm$^3$]

Choices

Material	Value	Reference
Cu	370.37	IEC 60287-2-1, $ρ=$0.0027
Al	208.33	IEC 60287-2-1, $ρ=$0.0048
Pb	33.4	engineeringtoolbox.com (1/0.0299)
Brz	118	electrical-contacts-wiki (CuSn4)
S	36.1	electrical-contacts-wiki (CuZn10)
SS	14.4	engineeringtoolbox.com
Zn	116	engineeringtoolbox.com