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Golden Steel Material is a premier ISO-certified stockist based in Al Jubail. We supply high-performance pipes, fittings, valves, and flanges to the Oil & Gas and Industrial sectors across Saudi Arabia and the GCC.
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Monel 400 and K500 Flanges are high-performance nickel-copper alloy components renowned for their exceptional resistance to seawater, steam, and highly corrosive chemical solutions. Monel 400 (UNS N04400) is a solid-solution alloy that offers excellent toughness and corrosion resistance across a wide temperature range, making it a standard material for marine engineering, salt production, and hydrocarbon processing. It is particularly resistant to rapidly flowing brackish water and seawater, providing a reliable sealing solution in offshore environments.
For applications requiring greater mechanical strength, Monel K500 (UNS N05500) flanges provide the same corrosion resistance as the 400 grade but with the added benefits of increased yield and tensile strength. This is achieved through age hardening (precipitation hardening), where aluminum and titanium additions create submicroscopic particles throughout the matrix. Our range of Monel weld neck, slip-on, blind, and lap joint flanges are manufactured to ASTM B564 specifications, ensuring they meet the rigorous pressure and safety standards of the oil, gas, and aerospace industries. Each flange is precision-engineered to provide long-term durability against stress-corrosion cracking and pitting in the most volatile conditions.
| Specification | Details |
|---|---|
| Specification: | ASTM / ASME SB 564 / 160 / 472 |
| UNS Grade: | Monel 400 (UNS No. N04400), Monel K500 (UNS No. N05500) |
| Standard: | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Types of Flanges: | Weld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges (SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges, Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges, etc. |
| Flange Face Type: | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Dimensions: | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Size Range: | ½” to 36″ |
| Pressure Ratings: | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Coating/Surface Treatment: | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
| Marking & Packing: | Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products. |
| Test Certificates: | Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
| Value Added Services: | CNC Machining, Customised Flanges |
| Flange Type | Dimension Range | Standard / Drawing Valid Norm |
|---|---|---|
| Monel 400 / K500 Blind Flanges | DN15 – DN2500 | DIN2527 PN16 DN150 BL 300lb 6" |
| ½" – 24" | Standard ANSI / ASME Class 150 to 2500 | |
| Monel 400 / K500 Threaded with neck | DN15 – DN150 | DIN2566 DN32 / 42.4 TH 300lb 1" |
| Monel 400 / K500 Threaded Flanges | ½" – 24" | Standard Threaded NPT / BSPT Sizes |
| Flanges smooth for welding (Plate) | DN15 – DN2500 | DIN2576 DN150 |
| Monel 400 / K500 Welding Neck Flanges | DN15 – DN2500 | DIN2635 DN150 / 168.3 WN 300lb 6", GOST Dy150 Py16 |
| ½" – 24" / Dy10 – Dy2400 | ASME B16.5 WN Classes 150 – 2500 | |
| Monel 400 / K500 loose flanges, smooth Bunde | DN15 – DN2500 | DIN2642 DN150 |
| Monel 400 / K500 loose flanges Stub | DN15 – DN2500 | DIN2673 DN150 |
| Monel 400 / K500 Welding flanges with neck | DN15 – DN2500 | DIN86030 DN150 |
| Monel 400 / K500 Slip On Flanges | ½" – 24" | SO 300lb 6" |
| Dy10 – Dy2400 | GOST Standard Specifications | |
| Monel 400 / K500 Lap Joint Flanges | ½" – 24" | LJ 300lb 6" |
| Monel 400 / K500 Socket Welding Flanges | ½" – 3" | SW 300lb 6" |
| Forged and Plate Flanges (Slip-On, Weld Neck, Blind, Lap Joint, Threaded, Socket Weld, Reducing, Plate) |
½" – 36" | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue & Groove |
Monel 400 / K500 Weld Neck Flange
Monel 400 / K500 Long Weld Neck Flange
Monel 400 / K500 Orifice Flange
Monel 400 / K500 Blind Flange
Monel 400 / K500 Ring Flange
Monel 400 / K500 Socket Weld Flange
| Element | Monel 400 (UNS N04400) % | Monel K500 (UNS N05500) % |
|---|---|---|
| Nickel (Ni) | 63.0 min | 63.0 min |
| Copper (Cu) | 28.0 – 34.0 | 27.0 – 33.0 |
| Iron (Fe) | 2.5 max | 2.0 max |
| Aluminum (Al) | - | 2.30 – 3.15 |
| Titanium (Ti) | - | 0.35 – 0.85 |
| Manganese (Mn) | 2.0 max | 1.5 max |
| Carbon (C) | 0.3 max | 0.25 max |
| Silicon (Si) | 0.5 max | 0.5 max |
| Sulfur (S) | 0.024 max | 0.01 max |
| Property | Monel 400 (Annealed) | Monel K500 (Age Hardened) |
|---|---|---|
| Tensile Strength (Min) | 480 MPa (70,000 psi) | 965 MPa (140,000 psi) |
| Yield Strength (Min) | 195 MPa (28,000 psi) | 690 MPa (100,000 psi) |
| Elongation (Min %) | 35% | 20% |
| Hardness (Typical) | 60 - 80 HRB | 27 - 32 HRC |
| Density (g/cm³) | 8.80 | 8.44 |
| Melting Range | 1300 – 1350°C | 1315 – 1350°C |
| Magnetic Permeability | Slightly Magnetic | Non-Magnetic (to -100°C) |
| Industrial Locations & Keywords |
|---|
| Riyadh Industrial Cities (1st, 2nd, 3rd & Sudair) |
| Jeddah Industrial Cities (1st, 2nd & 3rd) |
| Dammam Industrial Areas (1st, 2nd & 3rd) |
| Jubail Industrial City |
| Yanbu Industrial City |
| Rabigh Industrial City |
| Al Khobar Industrial Area |
| Al Ahsa Industrial City |
| Madinah Industrial City |
| Makkah Industrial City |
| Taif Industrial City |
| Tabuk Industrial City |
| Jazan Industrial City |
| Industrial supplier in Saudi Arabia |
| Pipe fittings supplier in Jubail / Dammam / Riyadh |
| Flange and valve supplier Saudi Arabia |
| Fast delivery industrial materials KSA |