A plug needs to address the needs of the current requirement and also be sustainable for longer periods of time. The material used is the most important primary variable that needs to be taken into contention. Apart from this, the particles that are used to make the material need to keep the processing cost down. Hence the material cost also plays an imperative role. Products that are needed to make the plugs need to be robust, durable and also lower in cost.
“Interesting to note the high value at which the market rates some properties and the low value applied to others. Relatively little economic value is attached to a high modulus of elasticity, for example…the attractive appearance of the plastics vastly overweighs their poor dimensional stability.”
A pin requires certain important material properties. There are the issues of overheating that must be considered. Heating from the current is drawn based on the appliance and resistance of conductor. It is derived from I2R losses. Hence the material must have lower electrical resistance within the pin. The plug that needs to be inserted needs to have high material strength. It needs to be durable and robust.