Duplex and Super Duplex UNS S32750 U-Bolts or J-Bolts

The Duplex and Super Duplex UNS S32750 U-Bolts and J-Bolts are specialized fasteners manufactured from the premium Super Duplex stainless steel alloy, UNS S32750 (also known as F53 or 2507). This material boasts a balanced austenitic-ferritic microstructure, which provides the final product with exceptional strength—nearly double that of standard austenitic stainless steels—and unparalleled resistance to corrosion. Specifically, Super Duplex UNS S32750 offers outstanding protection against chloride pitting, crevice corrosion, and stress corrosion cracking in aggressive environments, making it indispensable for critical applications. Zeron Fasteners specializes in supplying and manufacturing these high-integrity U-Bolts and J-Bolts, which are primarily used for pipe support, structural anchoring, and securing components in industries such as offshore oil & gas, chemical processing plants, desalination facilities, and marine infrastructure, ensuring safety and longevity in the most demanding conditions.

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UNS S32750 U-Bolts or J-Bolts

Duplex and Super Duplex UNS S32750 U-Bolts or J-Bolts

Manufacturing Specifications
Standard MSS SP-58 or SP-69, ASME B18.31.5, API 20E
Material Grade Super Duplex UNS S32750 (F53, SAF 2507)
Type Round Bend U-Bolts, Square Bend U-Bolts, J-Bolts
Pipe Size Range 1/2 inch to 36 inches
Thread UNC, UNF, Metric Coarse or Fine
Finish Self-Color, PTFE Coated

Chemical Composition (UNS S32750)

Element Composition (%)
Chromium (Cr) 24.0 to 26.0
Nickel (Ni) 6.0 to 8.0
Molybdenum (Mo) 3.0 to 5.0
Nitrogen (N) 0.24 to 0.32
Carbon (C) Max 0.030
Silicon (Si) Max 0.80
Manganese (Mn) Max 1.20
Phosphorus (P) Max 0.035
Sulfur (S) Max 0.020
Copper (Cu) Max 0.50

Mechanical Properties (UNS S32750)

Property Minimum Value
Ultimate Tensile Strength 800 MPa Min
Yield Strength (0.2% Proof) 550 MPa Min
Elongation (A) 15 % Min
Hardness (Max) 290 HBW Max
Impact Energy (Charpy V-Notch) 80 J Min at -50°C

Features Product

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