Everyone talks about the benefits of metal business cards at this current point in time, and we have to agree with all of these benefits due to the reason that metal is just a far superior material for you work with when you are in the initial design phase of your cards. However, it is also important to bear in mind the various limitations of business cards made out of metal not because this has the potential to make you want to reverse your decision in any way but more because this would help you to ensure that no damage ends up coming to them.
A major advantage of Metal Business Cards is that they are so durable, but you should know that this durability has its limits just like everything else. Water is something that can make metal rust, and as a result of the fact that this is the case you should look into keeping your metal business cards as dry as you possibly can at all times. If even the slightest bit of water got on your card, the end result of this would be that the card would start to rust more or less immediately and this can be rather disastrous for you if you think about it.
Water is the worst thing that your business card can be exposed to without a shadow of a doubt if the primary material used to make it is metal. Try to keep them in a water tight location if they are in storage, and remember that once they are in the hands of a potential client there is not much that you can do to prevent water damage from occurring.