Reciprocal of temperature coefficient of sheath material

Reciprocal of temperature coefficient of resistance at 0 °C of the sheath material.

Symbol
$\beta_{sh}$
Unit
K
Formulae
$\frac{1}{\alpha_{sh}}-20$
Choices
MaterialValue
Cu234.5
Al230.3
Pb228.0
Brz313.0
S202.0
SS980.0
Zn230.0