Zeron Fastners
Nickel Alloys Monel K500 Weld Neck Flanges
Nickel Alloys Monel K500 Weld Neck Flanges are highly specialized pipe flanges designed for use in the most severe service conditions, especially those involving high pressure, temperature, and cyclic stresses. Zeron Fasteners manufactures and supplies these premium high-strength flanges from the precipitation-hardenable nickel-copper alloy Monel K500 (UNS N05500). The distinguishing feature of this product is its long tapered hub which is butt-welded to the pipe, providing a joint that efficiently transfers stress to the pipe and minimizes stress concentration. Monel K500 is specifically chosen for its superior strength (due to age-hardening) and exceptional resistance to corrosion in high-velocity seawater and aggressive chemicals. Crucially, the material is compliant with NACE MR0175 standards for resistance to Sulfide Stress Corrosion Cracking (SSCC). The primary application of these Monel K500 Weld Neck Flanges is in critical piping systems within deep-well production, high-pressure chemical reactors, and severe service offshore platforms.
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Nickel Alloys Monel K500 Weld Neck 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 Weld Neck 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 |