If I am a Silver member travelling on Y class on CX, I know that I can have a lounge invitation card for CX lounges such as The Wing / Pier... Can I use that lounge invitation card to go to other Oneworld lounge, such as QF/BA lounge in HKG or SIN?? (Or only gold and diamond members can??)

Because I heard that the new CX lounge in SIN is not as good as BA/QF lounge, so would like to go there instead.