Monel Alloy grades at a glance with ASTM specification and equivalent chart
Monel refers to a group of nickel alloys characterised by the presence of nickel as the primary component along with copper and other elements. When the copper content surpasses that of nickel, the alloy is termed cupronickel. Typically, Monel consists of 52 to 67% nickel, rendering it stronger than pure nickel. The material can be formed through hot rolling or cold drawing, with cold-drawn products exhibiting precision in dimensions and hot-rolled ones possessing greater strength. Notably resistant to the rapid flow of seawater, Monel is particularly well-suited for marine applications. It is easily weldable, machinable, and amenable to cold working. The Monel price per kg varies based on the grade and specific product, and a detailed price list can be obtained by contacting us. Various Monel metal grades are available in the market, each featuring distinct compositions, mechanical properties, and applications. Designated by letters and numbers, grades like Alloy 400, 401, 404, 405, 450, K-500, R-405, and 502 serve specific purposes. The Monel alloy’s chemical composition differs among grades. Alloy 400, for instance, boasts high strength and excellent corrosion resistance, finding applications in hydrocarbon processing, marine contexts, and heat exchangers. Alloy 401 is particularly utilised in electric and electronic applications with compatible brazing properties. Alloy 404, known for low permeability, is employed in electrical and electronic applications, while Alloy 405, despite a less smooth surface finish due to increased sulphur content, is robust and used in automatic screw machines. The applications of Monel alloy vary depending on the specific grades, with R-405, for example, being highly resistant to hydrofluoric and hydrochloric acids in special applications.
Monel Alloy Grades
Monel 400 |
Monel K500 |
Monel 405 |
Types of Monel Alloy
Alloy 400 |
Alloy 401 |
Alloy R-405 |
Alloy 450 |
Alloy K-500 |
Alloy 404 Copper-Nickel Alloy |
Monel Alloy ASTM Standard
Alloy grade | UNS designation | ASTM standard |
---|---|---|
Alloy 400 | N04400 | B 127, B 164 / SB 127, SB 164 |
Alloy 401 | N04401 | – |
Alloy 404 | N04404 | B 164/ SB 164 |
Alloy K-500 | N05500 | B 865/ SB 865 |
Alloy R-405 | N04405 | – |
Monel Alloy Material Specification
STANDARD | WERKSTOFF NR. equivalents | UNS | GOST | JIS | BS | AFNOR | EN |
Alloy 400 | 2.4360 | N04400 | МНЖМц 28-2,5-1,5 | NW 4400 | NA 13 | NU-30M | NiCu30Fe |
Alloy K500 | 2.4375 | N05500 | – | – | – | – | – |
Monel Alloy Temperature Range
- Temperature limit: up to 480 Deg C (896°F)
- Melting Point: 1300-1350 Deg C (2372-2462°F)
Monel Alloy Applications & Uses
- Power generation
- Sea-water applications
- Commercial Gas Turbines
- Food Processing
- Chemical Processing
- Cryogenic Storage / Pressure vessels Tanks
- Nuclear reactors
Monel Alloy Chemical Compatibility Chart
Designation | Ni% | C% | Ti% | Ai% | Co% | Cr% | V% | W% | Mo% | Cu% | Nb/Cb Ta% | Fe% | Sonstige Autres-Other % |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alloy 400 | 65.0 | 0.12 | – | – | – | – | – | – | – | 32.0 | – | 1.5 | Mn 1.0 |
Alloy 401 | 43.0 | 0.10 | – | – | – | – | – | – | – | 53.0 | – | 0.75 | Si 0.25; Mn 2.25 |
Alloy 404 | 52.0-57.0 | 0.15 | – | 0.05 | – | – | – | rest/bal | – | 0.50 | Mn 0.10; Si 0.10;S o.024 | ||
Alloy 502 | 63.0-17.0 | 0.10 | 0.50 | 2.5-3.5 | – | – | – | – | – | rest/bal | – | 2.0 | Mn 1.5;Si 0.5; S 0.010 |
Alloy K 500 | 64.0 | 0.13 | 0.6 | 2.8 | – | – | – | – | – | 30.0 | – | 1.0 | Mn 0.8 |
Alloy R 405 | 66.0 | 0.15 | – | – | – | – | – | – | – | 31.0 | – | 1.2 | Mn 1.0; S 0.04 |
Monel Alloy Properties
Characteristics
- Stronger than steel
- Highly resistant to corrosion
- Malleable
- Low coefficient of thermal expansion
- Highly resistant to alkalis
- Suitable for welded, brazed and soldered
Monel Alloy Mechanical Analysis
Tensile strength, Ultimate | Tensile strength, Yield | Elongation at Break |
550 Mpa | 240 Mpa | 48% |
Monel Alloy Electrical Properties
Electrical Resistance | Curie Temperature (the temperature above which a ferromagnetic substance loses its ferromagnetism) |
5.47e-005 ohm-cm | 35°C |
Monel Alloy Thermal Properties
CTE, linear 20°C | Heat Capacity | Thermal Conductivity | Melting Point | Solidus | Liquidus |
13.9 µm/m- Deg C | 0.427 J/g-Deg C | 21.8 W/m-K | 1300 – 1350 Deg C | 1300 Deg C | 1350 Deg C |