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.
Super Duplex grades combine high chromium, molybdenum and nitrogen content to provide superior mechanical strength and outstanding resistance to pitting, crevice and stress corrosion cracking, making them ideal for VCR fittings in offshore, marine and aggressive chemical processing environments.
Super Duplex UNS S32750 combines high chromium, molybdenum and nitrogen content to provide excellent strength and resistance to pitting, crevice corrosion and chloride stress corrosion cracking.
| Element | Weight Percentage (%) |
|---|---|
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 6.0 - 8.0 |
| Molybdenum (Mo) | 3.0 - 5.0 |
| Nitrogen (N) | 0.24 - 0.32 |
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.20 max |
| Silicon (Si) | 0.80 max |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.020 max |
| Copper (Cu) | 0.50 max |
| Iron (Fe) | Balance |
*Composition limits are as per the applicable ASTM/ASME/UNS specification; actual limits may vary depending on product form.
Super Duplex UNS S32750 provides significantly higher strength than conventional austenitic stainless steels while maintaining good ductility and excellent corrosion resistance.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 795 MPa min |
| 0.2% Yield Strength | 550 MPa min |
| Elongation | 15% min |
| Hardness | 310 HB max |
| Density | Approx. 7.8 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.
Super Duplex 2506 (UNS S32506) is a duplex stainless steel with a balanced ferritic-austenitic structure and a small tungsten addition, offering high strength together with strong resistance to chloride pitting and stress corrosion cracking.
| Element | Weight Percentage (%) |
|---|---|
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 5.5 - 7.2 |
| Molybdenum (Mo) | 3.0 - 3.5 |
| Nitrogen (N) | 0.08 - 0.20 |
| Tungsten (W) | 0.05 - 0.30 |
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 0.90 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.015 max |
| Iron (Fe) | Balance |
*Composition limits are as per the applicable ASTM/ASME/UNS specification; actual limits may vary depending on product form.
UNS S32506 delivers roughly twice the yield strength of standard austenitic stainless steel while retaining good ductility and impact toughness.
| Property | Typical / Minimum Value |
|---|---|
| Tensile Strength | 690 MPa min |
| 0.2% Yield Strength | 450 MPa min |
| Elongation | 18% min |
| Hardness | 290 HB max |
| Density | Approx. 7.8 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.
Suitable for offshore platforms, pipelines, production systems and high-pressure installations.
Reliable performance for chemical processing, refining and aggressive process environments.
Ideal for seawater systems and offshore equipment where chloride corrosion resistance is critical.
Used in corrosive process lines and chemical handling systems requiring dependable containment.
Suitable for high-pressure process systems and auxiliary equipment in power plants.
Excellent for seawater desalination and industrial water treatment systems.