This Smart Metals sample pack contains labelled samples of all the smart metals for evaluation, supplied in a rigid plastic case.1 x Smart Spring.1 x Two‐Way Memory Spring.1 x Smart Wire 0.006″ diameter (125mm).1 x Memory Metal (125mm)Smart Spring:At room temperature this spring is soft enough to pull out to approximately 50mm by applying a small force
When heated to 70¼C by passing an electric current through it (or by other means such as hot water or a heat gun, etc), the spring contracts to its original length with a useful pulling force (equivalent to lifting a 0.5kg weight)
4mm internal diameterTwo Way Memory Spring:These remarkable springs, based on a brass alloy, ‘;remember’; to open up when heated and close again when cool
If immersed in hot water at or around 90¼C they will open in a split second and close as quickly if dropped in cold water
Such springs have many industrial applications – e
g
, in sprinkler and fire damping systems where they replace expensive single‐use only fusible links
Spring weight: 3g
The spring is 10mm long, extending to 25mm in hot water.11.5mm external diameter.9mm internal diameterSmart Wire:Smart wire is a shape memory alloy (SMA) that changes its length with a useful pulling force when a small current is passed through it
The Smart Wire is activated by passing a small electric current through it
It is also affected by temperature.125mm length.0.15mm diameter wire
