ARK Stainless Inc. is a trusted name in the supply and manufacturing of high-performance Monel Buttweld Fittings known for their excellent strength, corrosion resistance, and reliability in aggressive environments. These fittings are precisely engineered to withstand exposure to seawater, sulfuric acid, hydrofluoric acid, and alkalis, making them ideal for demanding applications in both high and low-temperature ranges.
We offer a wide range of grades including Monel 400 and Monel K500, each providing unique benefits. Monel 400 offers exceptional mechanical properties such as higher strength, tensile strength, and hardness due to the addition of titanium, while Monel K500 provides superior tensile strength and yield strength, alongside enhanced pitting and crevice corrosion resistance. Our Monel buttweld fittings are manufactured in accordance with international specifications such as ASTM B366 / ASME SB366 and dimensional standards like ASME B16.9, B16.28, and MSS-SP-43, ensuring consistency and high quality in every piece.
| Grade | Ni | Fe | C | Mn | Si | Cu | Al | Ti | S |
|---|---|---|---|---|---|---|---|---|---|
| Monel 400 | 63.0- 70.00 max | 2.50 max | 0.3 max | 2.00 max | 0.50 max | Remainder | - | - | 0.024 max |
| Monel 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 are used by several applications of industries and in different engineering sectors. The industries in which these buttweld fittings are used such as power generation, gas processing, seawater equipment, heat exchangers, chemical equipment, pulp and paper industry, pharmaceutical equipment, oil-shore oil drilling industry, and many more.
We carry out several material testing’s on these buttweld fittings to ensure the quality of these before supplying them to our esteem patrons. The several tests we execute are like mechanical test, PMI testing, chemical test, flattening test, micro test, macro test, IGC test, etc. We provide all the important documentation and test certificates with these buttweld fittings.
| STANDARD | UNS | WNR. | EN | JIS | GOST | AFNOR | BS |
|---|---|---|---|---|---|---|---|
| Monel 400 | N04400 | 2.4360 | NiCu30Fe | NW 4400 | МНЖМц 28-2,5-1,5 | NU-30M | NA 13 |
| Monel K500 | N05500 | 2.4375 | - | - | - | - | - |
