## Introduction
While titanium has gained popularity, **Medical Grade SS316L Stainless Steel** remains the workhorse for orthopedic trauma plating, particularly in developing markets and high-load applications. Its long-term success depends entirely on its resistance to the corrosive environment of the human body.
## The Chemistry of SS316L
The “L” in 316L stands for **Low Carbon**. By keeping carbon levels below 0.03%, the risk of “sensitization” (corrosion at the grain boundaries) during machining or sterilization is eliminated.
* **Molybdenum (2-3%):** Provides essential resistance to “pitting corrosion,” which is triggered by the chloride ions found in blood and sweat.
## The Passive Layer: The Invisible Shield
Stainless steel is not inherently “stainless”; it is protected by a microscopic **Chromium Oxide layer**.
1. **Self-Healing:** If scratched during surgery, the layer can reform in the presence of oxygen.
2. **Passivation:** At the factory, Ortholyx plates undergo a chemical passivation process to ensure this shield is thick, uniform, and free of iron impurities.
## When to Choose SS316L?
SS316L is the preferred material for:
* **Temporary Trauma Fixation:** Where the plate will be removed after healing.
* **High Strength Requirements:** Stainless steel is stiffer than titanium, making it ideal for certain complex femoral shaft fractures.
## Conclusion
SS316L is a reliable and cost-effective material when manufactured to the highest standards. Ortholyx SS316L implants are vacuum-melted and precision-passivated to ensure they remain inert and strong until the bone has fully bridged.