Reciprocal of temperature coefficient of armour material

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

Symbol
$\beta_{ar}$
Unit
K
Formulae
$\frac{1}{\alpha_{ar}}-20$
Choices
MaterialValueReference
Cu234.5IEC 60853-2
Al228.0IEC 60853-2
Brz313.0IEC 60853-2
CuZn506.3$1/α_{ar}$
S202.0IEC 60853-2
SS980.0$1/α_{ar}$