ASTM A815 UNS S32750 Reducer Con.
ASTM A815 specifications cover two broad categories: wrought ferritic, ferritic/austenitic and martensitic stainless steel fittings of WP and CR, seamless and welded construction. WP grade pipe fittings are divided into four subcategories: WP-S, WP-W, WP-WX and WP-WU. Fitting materials shall include forgings, rods, plates, or seamless or welded tubing.
The ASTM A815 specification covers two broad categories: WP and CR, with the latest revision, A960/A960M, covering wrought ferritic, ferritic/austenitic and martensitic stainless steel fittings of seamless and welded construction. Fittings that differ from these standards may be supplied in accordance with Supplementary Requirement S58 of Specifications A960/A960M. Class CR fittings are manufactured in accordance with the requirements of MSS SP-43 and shall have a pressure rating compatible with 13.3. This specification does not apply to cast accessories.
ASTM A815 UNS S32750 is a specification for butt weld fittings of wrought austenitic, ferritic, and duplex stainless steels. Designed for high pressure, high temperature and corrosive environments, these couplings are used in a variety of industries including oil and gas, chemical processing, petrochemicals and more. The term "UNS S32750" refers to a specific grade of duplex stainless steel, also known as superduplex stainless steel. Duplex stainless steels are characterized by a mixed microstructure of austenitic and ferrite phases, which gives them enhanced mechanical properties and corrosion resistance compared to conventional austenitic stainless steels
Super Duplex Steel S32750 Butt weld Fittings
ASTM A815 S32750 Super Duplex Steel Pipe Fittings Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex 2507 | 1.4410 | S32750 |
Super Duplex S32750 ASTM A815 Butt weld Fittings Chemical Composition
| C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
Ferritic/Austenitic Super Duplex Steel 1.4410 Pipe Fittings Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
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Large Diameter ASTM A815 UNS S32750 Reducer Con. Images
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