World Salinity Reference
| Sea Surface Salinity (PSU) | Sp. Gr. @ 60 ºF | Sp. Gr. @ 85 ºF | Recommended Material |
|---|---|---|---|
| 31 | 1.024 | 1.0195 | Bronze CDA958 |
| 31.5 | 1.0244 | 1.020 | Bronze CDA958 |
| 32 | 1.0248 | 1.0203 | Bronze CDA958 |
| 32.5 | 1.0252 | 1.0207 | Bronze CDA958 |
| 33 | 1.0256 | 1.021 | Bronze CDA958 |
| 33.5 | 1.026 | 1.0214 | Bronze CDA958 |
| 34 | 1.0263 | 1.0218 | Bronze CDA958 |
| 34.5 | 1.0267 | 1.0222 | Bronze CDA958 |
| 35 | 1.0271 | 1.0226 | Bronze CDA958 |
| 35.5 | 1.0275 | 1.023 | Duplex 2205 |
| 36 | 1.0279 | 1.0234 | Duplex 2205 |
| 36.5 | 1.0283 | 1.0238 | Duplex 2205 |
| 37 | 1.0287 | 1.0242 | Duplex 2205 |
| 37.5 | 1.0291 | 1.0245 | Duplex 2205 |
| 38 | 1.0295 | 1.0249 | Duplex 2205 |
| 38.5 | 1.0299 | 1.0254 | Duplex 2205 |
| 39 | 1.0302 | 1.0257 | Duplex 2205 |
| 39.5 | 1.0306 | 1.0261 | Duplex 2205 |
| 40 | 1.031 | 1.0265 | Duplex 2205 |