ARK Stainless Inc. is a renowned name in manufacturing and supplying high-performance Monel Buttweld Fittings, known for their superior strength, resistance to corrosion, and reliability in harsh environments. These fittings are meticulously designed to withstand exposure to challenging substances such as seawater, sulfuric acid, hydrofluoric acid, and alkalis, making them ideal for critical applications in both high and low-temperature environments.
We provide a diverse range of grades including Monel 400 and Monel K500, each offering distinct advantages. Monel 400 is known for its exceptional mechanical properties, such as higher tensile strength and hardness due to the inclusion of titanium. On the other hand, Monel K500 offers superior tensile strength and yield strength, with enhanced resistance to pitting and crevice corrosion. Our Monel buttweld fittings are manufactured according to international standards, including ASTM B366 / ASME SB366, and dimension standards like ASME B16.9, B16.28, and MSS-SP-43, ensuring high consistency and top-tier quality.
| Grade | Ni | Fe | C | Mn | Si | Cu | Al | Ti | S |
|---|---|---|---|---|---|---|---|---|---|
| 400 | 63.0- 70.00 max | 2.50 max | 0.3 max | 2.00 max | 0.50 max | Remainder | - | - | 0.024 max |
| K500 | 63.0 min | 05 - 2 | 0.25 max | 1.5 max | 0.5 max | 27.0 - 33.0 | 2.3 - 3.15 | 0.35 - 0.85 | 0.010 max |
| Grade | Tensile (ksi) | .2% Yield (ksi) | Elongation % | Hardness (HRb) |
|---|---|---|---|---|
| 400 | 75 to 90 | 25 to 50 | 60 to 35 | 60 to 80 |
| K500 | Psi – 1,60,000 , MPa – 1100 | Psi – 1,15,000 , MPa – 790 | 20 % | - |
Monel 400/K500 Buttweld Fittings find extensive application across various industries and engineering sectors, including power generation, gas processing, seawater equipment, heat exchangers, chemical equipment, pulp and paper industry, pharmaceutical equipment, offshore oil drilling, and more.
We conduct several rigorous tests on these buttweld fittings to ensure their quality before delivery to our valued customers. The tests include mechanical testing, PMI testing, chemical testing, flattening tests, micro and macro examinations, and IGC testing, among others. We provide all necessary documentation and test certificates along with these buttweld fittings.
| STANDARD | UNS | WNR. | JIS | EN |
|---|---|---|---|---|
| Monel 400 | N04400 | 2.4360 | NW 4400 | NiCu30Fe |
| Monel K500 | N05500 | 2.4375 | - | - |
