Pipe-Lok Vales & Fittings Company delivers precision-engineered instrumentation fittings and valves trusted for reliability, safety, and performance in industrial applications with a strong focus on engineering excellence and quality control.
6Mo super-austenitic stainless steel (UNS S31254) offers exceptional resistance to pitting and crevice corrosion in chloride-rich environments, making it a strong choice for VCR fittings in seawater and aggressive chemical process applications.
A high-molybdenum, high-nitrogen super-austenitic stainless steel engineered for superior resistance to chloride-induced localized corrosion.
| Element | Weight Percentage (%) |
|---|---|
| Nickel (Ni) | 17.5 - 18.5 |
| Chromium (Cr) | 19.5 - 20.5 |
| Molybdenum (Mo) | 6.00 - 6.50 |
| Copper (Cu) | 0.50 - 1.00 |
| Nitrogen (N) | 0.18 - 0.22 |
| Carbon (C) | 0.020 max |
| Manganese (Mn) | 1.00 max |
| Iron (Fe) | Balance |
*Composition limits are as per the applicable ASTM/ASME/UNS specification; actual limits may vary depending on product form.
6Mo delivers strength and corrosion resistance well beyond standard austenitic grades, suited for seawater and acidic chloride service.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 650 MPa min |
| 0.2% Yield Strength | 300 MPa min |
| Elongation | 35% min |
| Hardness | 223 HB max |
| Density | Approx. 8.0 g/cm³ |
*Mechanical requirements depend on product form, heat treatment and applicable ASTM/ASME specification. Confirm final values against the material specification used for the VCR fitting component.
High-performance material specifications for our complete VCR Fittings range.
Engineered for demanding fluid and gas-handling systems where leak-tight sealing, corrosion resistance and long service life are essential.
Handles the most aggressive acids and oxidizing media in specialty chemical production.
High-purity systems where corrosion resistance and product purity are essential.
Lightweight, high-strength components for demanding aerospace applications.
Exceptional resistance to seawater and chloride-rich marine environments.
Ultra-pure fluid handling in semiconductor fabrication processes.
Used in nuclear and specialty reactor applications requiring extreme corrosion resistance.