Business cards consist of various elements and most of these elements have been optimized for a single purpose: conveying to someone or the other what your business is focusing on more than anything else. There will be other information included on this card as well such as your phone number, email address or a wide range of things that people can use to stay in touch with you and do business with you whenever the need arises for them, but it is important to note that this primary purpose should always be factored into the business card design that you are eventually going to go for.
A lot of the information that you include on metal business cards does not have to be all that prominent due to the reason that it will be read by people that pay attention to the card so it’s not all that useful to make this the most visible aspect of the card in question. At the end of the day, it’s your brand name and logo that would be most clearly visible on the card so that it can catch someone’s eye and give them a reason not actually look at this card in further detail.
A clearly defined card needs to have some extra added color, and this is where your brand logo can come in most handy. This might lead you to make your logo or brand name so prominent that it would cover all of the other details that the card is meant to provide, so remember to adopt a holistic approach while you are designing it so that everything gets the attention that it deserves.