Chain or similar that can be underground?

[Rolle85]

Are there chains or similar that can be underground without rusting away?

 

[Thomas_Blekinge]

Stainless steel or very thick material that takes many years to rust away. What should it withstand?

 

[Rolle85]

It should be placed in a flower bed and support a can on the flower bed as a counterhold.

 

[fribygg]

It is supposed to be in a flowerbed and support a can on the flowerbed as a brace

Then maybe 10mm rebar might do