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UNS S32550 VS. UNS S32760
Both UNS S32550 and UNS S32760 are super duplex stainless steel grades. S32550 stainless steel pipe generally has higher yield strength and tensile strength, while S32760 stainless steel pipe generally has better resistance to pitting corrosion.
Chemical composition:
S32550 super duplex pipe (also known as 25Cr-6Ni-3Mo-N) contains approximately 24-26% chromium, 4.5-6.5% nickel, 2.9-3.9% molybdenum, and 0.10-0.30% nitrogen.
S32760 super duplex pipe (also known as 25Cr-7Ni-3.5Mo-0.25N) contains approximately 24-26% chromium, 6-8% nickel, 3-4% molybdenum, and 0.20-0.30% nitrogen.
Mechanical properties:
S32550 stainless steel pipe generally exhibits higher yield strength and tensile strength compared to S32760.
S32760 stainless steel pipe generally has better resistance to pitting corrosion than S32550, especially in chloride-rich environments.
Standards and Designations
| Material Grade | UNS Designation | EN/DIN Standard | Common Trade Name |
| S32550 | UNS S32550 | 1.4507 | Ferralium 255 / F61 |
| S32750 | UNS S32750 | 1.4410 | SAF 2507 / F53 |
Application:
1.4507 stainless steel is typically used in applications requiring high strength, such as oil and gas industry components, chemical processing equipment, and marine environments.
The S32760 is typically used in highly corrosive environments including offshore oil and gas platforms, desalination plants, and chemical processing facilities.
Why Choose HT Steel Pipe for Your Super Duplex Projects?
As a leading supplier of high-performance alloys, HT Steel Pipe provides fully certified S32550 and S32750 pipes, fittings, and flanges.
Certifications: ASTM A789, A790, EN 10216-5.
Quality Control: 100% PMI testing, Ultrasonic test, and Corrosion test according to ASTM G48.
Global Logistics: Fast shipping to Houston, Rotterdam, Singapore, and Jebel Ali.
