Phosphorus and Sulfur are important elements in Low Alloy Steel and Stainless Steel. Sulfur is particularly important in determining if a steel has experienced resulfurization as well as grade differentiation. When operators must analyze sulfur or phosphorus in the field the UVTouch probe is your best friend.
For example: Differentiating 303 stainless steel from 304 stainless steel.
| AISI | C | Si | Mn | P | S | Ni | Cr |
| 303 | Max 0.15 | Max 1.00 | Max 2.00 | Max .20 | Min. 0.15 | 8.00~10.00 | 17.00~19.00 |
| 304 | Max 0.08 | Max 1.00 | Max 2.00 | Max 0.045 | Max 0.030 | 8.00~10.50 | 18.00~20.00 |
303 and 304 stainless steel are separated by Carbon, Phosphorous, Sulfur, and Moly.Chromium and Nickel are slight differentiating factors.
| AISI | C | P | S |
| 303 | Max 0.15 | Max 0.200 | Min. 0.15 |
| 304 | Max 0.08 | Max 0.045 | Max 0.030 |
As we know Sulfur is the most important element to accurately determine the difference between 303 and 304.
On top of that, the UVTouch probe can even handle extremely low levels of carbon down to 0.003. Look to the UVTouch for in the field accuracy and precision. To learn more about the UVTouch and mobile OES contact us.
OES MAINTENANCE & CALIBRATION: