316 Stainless Steel Valve Ball
Type 316 steel is an austenitic chromium-nickel stainless steel that contains between two and three percent molybdenum. The molybdenum content increases corrosion resistance, improves resistance to pitting in chloride ion solutions and increases strength at high temperatures.
316L Stainless Steel Valve Ball
Type 316L stainless steel is an extra-low carbon version of the 316 steel alloy. The lower carbon content in 316L minimizes deleterious carbide precipitation as a result of welding. Consequently, 316L is used when welding is required in order to ensure maximum corrosion resistance.
Type 316 and 316L Stainless Steel Composition:
| Element | Type 316 (%) | Type 316L (%) |
| Carbon | 0.08 max. | 0.03 max. |
| Manganese | 2.00 max. | 2.00 max. |
| Phosphorus | 0.045 max. | 0.045 max. |
| Sulfur | 0.03 max. | 0.03 max. |
| Silicon | 0.75 max. | 0.75 max. |
| Chromium | 16.00-18.00 | 16.00-18.00 |
| Nickel | 10.00-14.00 | 10.00-14.00 |
| Molybdenum | 2.00-3.00 | 2.00-3.00 |
| Nitrogen | 0.10 max. | 0.10 max. |
| Iron | Balance | Balance |