Apple has advised customers of its recently launched Apple Card to keep the titanium card in a soft bag where it won't touch other credit cards, keys or loose change, and to gently clean it with a microfibre cloth.

Apple launched its credit card this week for customers in the US and issued a set of instructions for the card's care on its website.

"Place your card in a slot in your wallet or billfold without touching another credit card," the instructions state. "If two credit cards are placed in the same slot your card could become scratched."

"Don't place your titanium Apple Card in a pocket or bag that contains loose change, keys, or other potentially abrasive objects," it continued.

Leather wallets or the pockets of denim jeans may cause permanent discolouration of the card that will not wash off, the company said.

Unlike most credit cards that are made from plastic, the Apple Card is made from a titanium base material, with a multi-layer, white coating.

The Apple Card has no card number, CVV security code, expiration date or signature strip. The stripped-back design simply features the Apple logo laser-etched in the top right corner, with the card-holder's name below.

Further instructions for how to "safely store and carry" the card note that it should only be stored in a wallet, pocket or bag that is "made from soft materials".

Should the card be kept close to the magnetic latch of a purse the magnetic strip may become demagnetised, the instructions warn.

If the user transgresses and the card is stained, it can be cleaned by wiping gently with a soft, slightly damp, lint-free microfibre cloth.

The company recommends sopropyl alcohol as an appropriate cleaning fluid. It warns against window or household cleaners, compressed air, aerosol sprays, solvents, ammonia, or abrasives, any of which may damage the card's delicate surface.

The Apple Card was announced in March this year. The tech company has partnered with American investment bank Goldman Sachs on the card, which according to Apple is more secure than any other physical credit card.

It is designed to work with the iPhone, offering a seamless payment experience. A physical credit card is optional, as Apple envisions that most payments will be made through the iPhone via Apple Pay.

The customer's spending is broken down for them on their iPhone by week, month or category. Apple has promised that it won't share payment data with third parties for marketing purposes.

Speaking at the launch announcement, Apple CEO Tim Cook called the Apple Card "the most significant change in the credit card experience in 50 years".

Apple is yet to announce when the card will be available internationally.