Home > Super Duplex Steel > Super Duplex Steel Hydraulic Fittings
Situated in the heart of Hamilton, Mason Tubefittings stands as a key manufacturer dedicated to excellence in fluid system components. We take pride in producing robust Super Duplex Steel Hydraulic Fittings, engineered to tackle the most demanding industrial environments. Our focus is on delivering reliability and longevity, providing our clients across New Zealand and beyond with connections they can truly depend on, backed by a commitment to superior quality and local craftsmanship.
Super Duplex steel is defined by its precise composition, which blends chromium, nickel, molybdenum, and nitrogen. This specific alloy creates an exceptional strength-to-weight ratio and offers outstanding resistance to pitting and crevice corrosion. Mechanically, these fittings boast a very high tensile strength, allowing them to withstand immense system pressures far better than standard stainless steels, making them a remarkably durable choice.
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | SUPER DUPLEX UNS S32750, UNS S32760 |
| SERIES | LL- LOW PRESSURE , L- MEDIUM PRESSURE, S- HIGH PRESSURE |
| WORKING PRESSURE | 1 BAR TO 700 BAR |
| SIZE RANGE | 6 MM TO 42 MM |
| CONNECTIONS | TUBE TO TUBE , TUBE TO MALE THREAD , TUBE TO FEMALE THREAD , TUBE TO BUTT WELD , TUBE TO SOCKET WELD , TUBE TO JIC 37* , TUBE TO 24* CONE, TUBE TO SWIVEL END , TUBE TO ADJUSTBALE STANDPIPE |
| WELD NIPPLE TO MALE THREAD , WELD NIPPLE TO FEMALE THREAD , WELD NIPPLE TO BUTT WELD , WELD NIPPLE TO SOCKET WELD , WELD NIPPLE TO 24* CONE , WELD NIPPLE TO 37* JIC , WELD NIPPLE TO SWIVEL | |
| BODY TYPE | FORGED, BAR STOCK |
| SURFACE | EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH |
| Grade | S32750 | S32760 |
| C | 0.030 max | 0.05 max |
| Mn | 1.20 max | 1.00 max |
| Si | 0.80 max | 1.00 max |
| P | 0.035 max | 0.030 max |
| S | 0.020 max | 0.010 max |
| Cr | 24.00 – 26.00 | 24.00 – 26.00 |
| Mo | 3.00 – 5.00 | 3.00 – 4.00 |
| Ni | 6.00 – 8.00 | 6.00 – 8.00 |
| N | 0.24 – 0.32 | 0.20 – 0.30 |
| Fe | 58.095 min | 57.61 min |
| Density (g/cm 3) | 7.8 |
| Density (lb/in 3) | 0.281 |
| Melting Point (°C) | 1350 |
| Melting Point (°F) | 2460 |
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex 2507 | 1.4410 | S32750 |
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The exceptional resilience of our Super Duplex fittings makes them essential in industries where failure is not an option. You’ll find them performing reliably in offshore oil and gas platforms, resisting harsh seawater, and within demanding chemical processing plants. They are also vital in desalination facilities and high-pressure hydraulic systems on heavy machinery, ensuring safe and efficient operation where extreme pressures and corrosive media are part of the daily challenge.
Please feel free to contact us if you need any further information or for enquiry.
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