Metallurgical grades designed for ultimate corrosion resistance in tough environments.
Stainless steel fasteners offer superior rust resistance and high-temperature capability compared to carbon steel. The addition of chromium creates a self-healing chromium oxide film on the surface, preventing galvanic corrosion in damp, coastal, and chemical refinery environments.
We manufacture fasteners in three primary stainless steel categories: A2 (SS 304) for general outdoor weather, A4 (SS 316) with molybdenum for chloride marine environments, and SS 310 for high-temperature furnace applications.
| Alloy Grade | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Carbon (C) Max | PREN Number |
|---|---|---|---|---|---|
| SS 304 (A2 Class) | 18.0 - 20.0 % | 8.0 - 10.5 % | - | 0.08 % | 18.0 (Low-medium rust resistance) |
| SS 316 (A4 Class) | 16.0 - 18.0 % | 10.0 - 14.0 % | 2.0 - 3.0 % | 0.08 % | 24.5 (High marine rust resistance) |
| SS 310 (Heat Class) | 24.0 - 26.0 % | 19.0 - 22.0 % | - | 0.15 % | 25.0 (High temperature scaling limit) |