# Reciprocal of temperature coefficient of armour material

Reciprocal of temperature coefficient of resistance at 0 $^{\circ}$C of the armour material.

Symbol
$\beta_{ar}$
Unit
K
Formulae
$-20 + \frac{1}{\alpha_{ar}}$
Related
$a_{type}$
$\alpha_{ar}$
Used in
$\beta_{k}$
Choices
ConstructionValue
SWR202.0
SWF202.0
ST202.0
SSR980.0
SSF980.0
CuWR234.5
CuWF234.5
BrzWR313.0
BrsWR506.3
AlWR230.3
TECK230.3