Card body for a chip card, and chip card

1 . A card body for a chip card, having a metallic layer composed of a steel alloy, wherein the steel alloy of the metallic layer contains carbon with a mass fraction of 0.07% to 4%, and in that the steel alloy of the metallic layer contains sulfur with a mass fraction of 0.02% to 0.04%.

2 . The card body according to claim 1 , wherein the steel alloy is a stainless-steel alloy having the designation 1.43.01.

3 . The card body according to claim 1 , wherein the steel alloy of the metallic layer contains copper with a mass fraction of 0.01% to 5%.

4 . The card body according to claim 1 , wherein there is a slot in the metal layer between an edge of the metallic layer and the module opening.

5 . The card body according to claim 1 , wherein there is a respective plastic outer layer on two main faces of the metallic layer.

6 . The card body according to claim 1 , wherein there is a module opening in the metallic layer for receiving a chip module.

7 . A chip card comprising a card body according to claim 6 and a chip module embedded at least partly into the module opening of the card body.

8 . The chip card according to claim 6 , wherein the chip module comprises a coil and a chip.

9 . A card body for a chip card, having a metallic layer composed of a steel alloy, wherein the steel alloy of the metallic layer comprises a stainless-steel alloy having the designation 1.43.01 with additive specifications comprising carbon with a mass fraction of 0.07% to 4%, sulfur with a mass fraction of 0.02% to 0.04%, and copper with a mass fraction of 0.01% to 5%.

10 . The card body according to claim 9 , wherein the additive specifications comprise carbon with a mass fraction of 0.1% to 3%, sulfur with a mass fraction of 0.02% to 0.04%, and copper with a mass fraction of 0.1% to 1%.