Table 5.
Chemical composition of as-received non-stick cookware tested by OES (weight %)
| Coating type, Manufacturer | Si | Mn | P | Cr | Ni | Ti | Mg | Pb | Sn | Sr | Zr | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PTFE, Manuf-1 | 0.0468 | 0.0113 | 0.0038 | 0.0019 | 0.0005 | 0.0246 | 0.0048 | 0.0065 | 0.0005 | 0.0010 | 0.0002 | 99.5333 |
| PTFE, Manuf-2 | 0.13 | 0.63 | 0.00 | 0.01 | 0.00 | 0.02 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 98.60 |
| PTFE, Manuf-3 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 99.30 |
| Granite, Manuf-4 | 10.60 | 0.23 | 0.00 | 0.03 | 0.11 | 0.04 | 0.21 | 0.05 | 0.02 | 0.00 | 0.01 | 84.37 |
| Granite, Manuf-5 | 0.16 | 0.69 | 0.00 | 0.01 | 0.00 | 0.02 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 98.50 |
| Granite, Manuf-6 | 0.11 | 0.02 | 0.00 | 0.02 | 0.00 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.00 | 99.40 |
| Coating type, Manufacturer | Cu | Zn | Fe | V | Co | Ca | Sb | B | Cd | Ag | Ga | Identified Al alloy series |
| PTFE, Manuf-1 | 0.0010 | 0.0033 | 0.3175 | 0.0101 | 0.0005 | 0.0006 | 0.0034 | 0.00 | 0.00 | 0.00 | 0.01 | AA 1050 |
| PTFE, Manuf-2 | 0.00 | 0.01 | 0.51 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | AA 1100 |
| PTFE, Manuf-3 | 0.00 | 0.00 | 0.48 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | AA 1230 |
| Granite, Manuf-4 | 2.59 | 0.89 | 0.82 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | AA 4145 |
| Granite, Manuf-5 | 0.00 | 0.01 | 0.57 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | AA 1100 |
| Granite, Manuf-6 | 0.01 | 0.07 | 0.33 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | AA 1145 |