UNS S32750 EFW Duplex Stainless Steel Pipe
UNS S32750 EFW Duplex Stainless Steel Pipe is known to have better stress corrosion, cracking resistance and mechanical properties. The high corrosion resistance of 32750 Seamless Pipe supplies makes them ideal for onshore and offshore environments in oil and gas applications. Please see our industry pages for more information regarding the implications of Super Duplex piping. Super Duplex is an Austenitic Ferritic Iron Chromium – Nickel Alloys with Molybdenum addition. It has good resistance to pitting and a very high tensile strength and high resistance too stress corrosion cracking at moderate temperatures compared to that of conventional austenitic stainless steels.
ASTM A928 UNS S32750 EFW Duplex Stainless Steel Pipe Specification
Quality Standard for ASTM A928 UNS S32750 Super Duplex Stainless Steel EFW pipes / EFW Electric Fusion Welded Pipe:
High quality EFW Electric Fusion Welded Pipe is all made and controlled to the relevent standards such as: ASME, ASTM, BS and DIN/WERKSTOFFE.
Sizes for ASTM A928 UNS S32750 Super Duplex Stainless Steel EFW pipes / EFW Electric Fusion Welded Pipe/UNS S32750 EFW Duplex Stainless Steel Pipe:
ASTM A928 UNS S32750 Super Duplex Stainless Steel EFW pipesis available available in sizes from 1/8" through to 64" Nominal Bore.
Chemical Composition of UNS S32750 Super Duplex Stainless Steel EFW Pipes
| Trade Name | UNS | Super Duplex Industry Specifications | Chemical Composition | Min.Tensile (KSI) | Min.Yield (KSI) | Elongation % |
| SAF 2507® | UNS S32750 | ASTM A182 F53, A240, A276, A479, A789, A790, A815, A928, A988 SAE J405 | C 0.030 max Cr 24.0-26.0 Cu 0.5 max Mn 1.20 max Mo 3.0-5.0 N 0.24-0.32 Ni 6.0-8.0 P 0.035 max S 0.020 max Si 0.8 max | 116 | 80 | 15 |
| UNS S32760 | ASTM A182 F55, A240, A276, A314, A473, A479, A789, A790, A815, A928, A988 SAE J405 | C 0.03 max Cr 24.0-26.0 Cu 0.5-1.0 Mn 1.0 max Mo 3.0-4.0 N 0.2-0.3 Ni 6.0-8.0 P 0.03 max S 0.01 max Si 1.0 max W 0.5-1.0 | 109 | 80 | 2 |
Chemical Composition of UNS S32750 Super Duplex Stanless Steel Pipes and Tubes
Elements | C | Cr | Cu | Fe | Mo | Mn | N | Ni | P | S | Si | W |
Minimum | 24.0 | REMAINDER | 3.00 | 0.24 | 6.00 | 0.20 | 0.50 | |||||
Maximum | 0.030 | 26 | 0.50 | 5.00 | 1.20 | 0.32 | 8.00 | 0.035 | 0.020 | 0.80 | 1.00 |
Mechanical Properties of UNS S32750 Super Duplex Stanless Steel Pipes and Tubes
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 550[79.8] |
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 800 [116] |
| Elongation (%) minimum | 25 |
| Hardness (HBN) | 270 max |
| Reduction of Cross Section Area (%) | 45 |
| Charpy V-notch Impact at ambient Temp (J) [ft.lb] | 80min [59min] |
| Charpy V-notch Impact at -46°C (J) [ft.lb] | 45av, 35min [33av, 25.8min] |
