Skyler, don't believe the many myths around which over stress and over complicate the importance of the type of metal used for the elements of a yagi antenna for instance. For all the common types of suitable metal available with which to make an antenna, in reality it makes little if no noticeable difference which metal you use, especially below 30 MHz. Having said that, the less resistance the better, but the small differences in resistance between metals never seems to affect the operation of an antenna in any significant way in my experience. Excluding the effects of environmental conditions, for fixed installations, aluminium is no doubt the best thing to use in just about all cases.