Nickel Alloys Monel K500 Socket Weld Flanges

Nickel Alloys Monel K500 Socket Weld Flanges (SW Flanges) are specialized pipe flanges designed primarily for small nominal bore piping systems where high pressure and leakage integrity are critical. Zeron Fasteners manufactures and supplies these specialized high-strength flanges from the precipitation-hardenable nickel-copper alloy Monel K500 (UNS N05500). The distinguishing feature of this product is the recessed shoulder into which the pipe is inserted and then secured with a single fillet weld around the outer diameter. This construction offers both structural strength and simplified assembly. Monel K500 is specifically utilized for its superior strength (due to age-hardening) and exceptional resistance to corrosion in high-velocity seawater, hydrofluoric acid, and caustic solutions. Crucially, the material is compliant with NACE MR0175 standards, ensuring resistance to Sulfide Stress Corrosion Cracking (SSCC). The primary application of these Monel K500 Socket Weld Flanges is in instrumentation lines, critical process lines handling hazardous or corrosive fluids, and small diameter pressure piping systems within chemical processing and offshore facilities.

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Monel K500 Socket Weld Flanges

Nickel Alloys Monel K500 Socket Weld Flanges Chemical Composition

Element Content (%)
Nickel (Ni) 63.0 min
Copper (Cu) 27.0–33.0
Aluminum (Al) 2.30–3.15
Iron (Fe) 2.0 max
Manganese (Mn) 1.5 max
Titanium (Ti) 0.35–0.85
Carbon (C) 0.25 max

Nickel Alloys Monel K500 Socket Weld Flanges Mechanical Properties

Property Value (Age-Hardened)
Tensile Strength (min) 1100 MPa (160 ksi)
Yield Strength (0.2% Offset min) 760 MPa (110 ksi)
Elongation in 4D (min) 20%
Hardness (Brinell typ.) 265-320 HB

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