Heavier cards — is more weight actually better?

Heard conflicting things about card weight as a quality indicator. Tested this properly with a digital scale and comparison cards. Here is what the data shows.

What makes cards heavy or light

Card weight depends primarily on the substrate material. True polycarbonate (PC) cards are denser than PVC cards of the same dimensions. Composite cards that mix materials land somewhere between. A 0.76mm polycarbonate card typically weighs around 5.0 to 5.5 grams. PVC cards of the same dimensions run about 4.5 to 5.0 grams. The difference is noticeable in direct comparison but subtle in isolation.

What I measured

Weighed eight cards on a 0.01 gram digital scale. Four claimed polycarbonate vendor cards, three genuine state licenses, and one obvious PVC vendor card. Results: genuine licenses ranged 5.1 to 5.4 grams. Three of the four claimed-poly vendor cards measured 4.9 to 5.1 grams. The fourth vendor card measured 4.3 grams — clearly PVC despite the vendor's materials claim. The obvious PVC card came in at 4.2 grams, consistent with PVC.

Is heavier always better?

Within the polycarbonate range, no — variation between 5.0 and 5.5 grams in a genuine card reflects legitimate material variation, not quality difference. A vendor card at 5.0g is not noticeably better or worse than one at 5.4g.

Below 4.8 grams on what is supposed to be a polycarbonate card, you are probably looking at PVC or a composite that is mostly PVC. That is a meaningful quality distinction — not because of the weight itself, but because it indicates the substrate material claim is inaccurate.

The practical takeaway

Weight is a useful sanity check for substrate materials claims but not a gradient quality indicator within the polycarbonate range. Use it to detect PVC-pretending-to-be-poly, not to rank polycarbonate cards against each other.

The weight test is most useful when evaluating multiple cards side by side, not as a standalone purchase-decision tool. Combined with the tactile poly ring test and edge delamination check, it gives you a reasonably complete picture of whether a card is constructed from the materials the vendor claims. Any single test is less reliable than a combination of physical checks applied together.