Khuliso Fittings is a reputable manufacturer and supplier located in Cape Town, South Africa, specializing in top-notch **Monel Buttweld Fittings**. These fittings are designed to withstand corrosion like a champ, especially when it comes to seawater, hydrofluoric acid, and other harsh environments. Made from Monel, a nickel-copper alloy, they boast impressive strength, toughness, and durability across a variety of temperatures. Khuliso Fittings is committed to ensuring that every product adheres to international quality standards, catering to industries such as chemical processing, marine, offshore oil and gas, desalination, and power generation with reliable, precision-engineered piping solutions that promise long-lasting performance even in tough conditions.
Specifications : ASTM B366 / ASME SB366
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : Seamless Butt Weld Fittings: 1/2″ – 10″, Welded Butt Weld Fittings: 1/2″ – 48″
Type : Seamless / Welded / Fabricated
Schedule : Sch 5 TO Sch XXS.
Thickness : 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc.
Grades : Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Monel Buttweld Fittings are primarily composed of nickel (63-70%) and copper (28-33%), with small amounts of iron, manganese, silicon, and carbon. This unique composition provides excellent resistance to corrosion, particularly in seawater and acidic environments. The mechanical properties include a tensile strength of up to 1050 MPa and a yield strength of approximately 275 MPa. Monel fittings maintain their strength at high temperatures, making them ideal for high-pressure applications. They also offer superior resistance to stress corrosion cracking, pitting, and crevice corrosion, ensuring durability in harsh environments.
| Grade | C | Mn | Si | S | Cu | Fe | Ni |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.024 max | 28.00 – 34.00 | 2.50 max | 63.00 min |
| Monel K500 | 0.25 max | 1.5 max | 0.5 max | 0.010 max | 27.00 – 33.00 | 0.5 – 2 | 63.00 min |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 | 40 % |
| Monel K500 | 8.44 g/cm3 | 1350 °C (2460 °F) | Psi – 160000 , MPa – 1100 | Psi – 115000 , MPa – 790 | 20 % |
**Monel Buttweld Fittings** are primarily made up of about 67% nickel and 23–29% copper, along with trace amounts of iron, manganese, and carbon. This unique blend gives them remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive settings, while also providing excellent mechanical strength. Typically, these fittings showcase a tensile strength of around 550–690 MPa, yield strength of 240–310 MPa, and an elongation of 30–40%, all while maintaining toughness and stability across a broad temperature range.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | GOST | EN |
| Monel | 2.4375 | N05500 | – | – | – | – | – |
Choose Monel Buttweld Fittings from Khuliso Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Monel Buttweld Fittings offer numerous advantages, including exceptional corrosion resistance, particularly in seawater, acidic, and alkaline environments. They are highly durable, resisting pitting, crevice corrosion, and stress corrosion cracking, which ensures reliable performance in harsh conditions. These fittings also retain their strength and mechanical properties at elevated temperatures, making them ideal for high-pressure and high-temperature applications. Monel Buttweld Fittings are also known for their excellent weldability, machinability, and long-term reliability. Their versatility and ability to withstand aggressive environments make them a preferred choice for marine, chemical, and industrial applications.
Yes, custom sizes for Monel Buttweld Fittings are available at Khuliso Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@khulisofittings.co.za
You’ll find **Monel Buttweld Fittings** in various applications where top-tier corrosion resistance and mechanical performance are essential. They’re commonly used in seawater systems, chemical reactors, heat exchangers, desalination plants, and offshore oil and gas piping systems. Plus, they’re perfect for handling hydrofluoric acid, marine engineering, and the chemical processing industry. The blend of strength, durability, and corrosion resistance makes these fittings a go-to choice for demanding industrial piping systems that face harsh chemicals and challenging environmental conditions.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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