Monel alloys are known to be very durable, especially in harsh marine environments. Monel round bars have a high level of copper, which increases their resistance to corrosion where there is a solution of brine or sodium chloride. Since most metals normally contain an average of 3.5 percent of salt content by weight in oceans and seas, the problem of corrosion is of great concern to the standard metals. Salt contains chlorine, which is an aggressive corrosion element that can destroy passive corrosion layers and hasten rust development.
But the nickel-copper mixture of Monel produces one of the most robust alloys, which has an incredible performance when subjected to marine conditions. Unifit Fastener Monel square and hex bars are designed in such a manner that they are able to resist these corrosive problems. These alloys have low levels of corrosion, even in high-velocity water (e.g., 10 m/s), and are significantly better than the standard stainless steel alloys, such as 304.
The hygroscopic property of salt causes moisture to be retained on the metal surfaces, and this acts even more to enhance corrosion. However, Monel flat bars are immune to the harmful effects of salty sprays, and because of this, they can be used in offshore and coastal applications in the long term. Also, Monel 400 round bar and monel k500 round bar are superior in the prevention of biofouling and in MIC (microbially induced corrosion), which is why they are safe in pipelines, pumps, valves, and other essential parts of the marine devices.
In projects that need dependable, corrosion-free fasteners and other structural elements, the Unifit Fastener has solutions in Monel alloy, which will perform miraculously in the most extreme conditions at sea.
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| Specification | Details |
|---|---|
| Standards | EN, ASME, AISI, BS, JIS, DIN, ASTM |
| Round Bar Size | Thickness: 2 – 100 mm |
| Tolerance | K11, H8, H12, K12, H13, H10, H9, K9, K10, H11, or customized |
| Forms Available | Round, Rod, T-Bars, Channel Bars, Precision Ground Bars, Flat Bars, Square, Blocks, Rings, Hollow, Triangle, Threaded, Hex (A/F), Rectangle, Half Round Bars, Profiles, Billet, Ingot, Forging, I/H Bars |
| Flat Bar Size | Thickness: 3 – 800 mm; Width: 10 – 500 mm |
| Angle Bar Size | 3 × 20 × 20 mm to 12 × 100 × 100 mm |
| Section Bar Thickness | 3 – 12 mm |
| Channel Bar Size | Thickness: 5 – 6 mm; Section: 80 × 40 mm to 150 × 75 mm |
| Hollow Bar Size | OD: 32 – 250 mm; ID: 16 – 200 mm |
| Rectangle Bar Size | 34 × 30 mm to 295 × 1066 mm |
| Billet Size | Diameter: 0.5 – 495 mm |
| Surface Finish | Hot Rolled Pickled, Bright, Sand Blasted, Cold Drawn, Hairline, Polished |
| Finish Options | Cold (Bright) Drawn, Hot Rolled, Slit Rolled Edge, Peeled, Centreless Ground, Hot Rolled Annealed, Rough Turned, Polished, Grinding & Black |
| Manufacturing Techniques | Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar/Rod |
| Condition | Annealed, Tempered, Hardened |
| Processing Capability | Cutting up to 650 mm |
| Grade | Standard | Werkstoff Nr. | UNS | JIS | BS | GOST | AFNOR | EN |
|---|---|---|---|---|---|---|---|---|
| Monel 400 | ASTM B164 | 2.4360 | N04400 | NW 4400 | NA 13 | МНЖМц 28-2,5-1,5 | NU-30M | NiCu30Fe |
| Monel K500 | ASTM B164 | 2.4375 | N05500 | – | – | – | – | – |
| Designation | C% | Co% | Cr% | Mo% | Ni% | V% | W% | Al% | Cu% | Nb/Cb/Ta% | Ti% | Fe% | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monel 400 | 0.12 | – | – | – | 65.0 | – | – | – | 32.0 | – | – | 1.5 | Mn 1.0 |
| Monel 401 | 0.10 | – | – | – | 43.0 | – | – | – | 53.0 | – | – | 0.75 | Si 0.25; Mn 2.25 |
| Monel 404 | 0.15 | – | – | – | 52.0–57.0 | – | – | 0.05 | balance | – | – | 0.50 | Mn 0.10; Si 0.10; S 0.024 |
| Monel 502 | 0.10 | – | – | – | 63.0–67.0 | – | – | 2.5–3.5 | balance | – | 0.50 | 2.0 | Mn 1.5; Si 0.5; S 0.010 |
| Monel K500 | 0.13 | – | – | – | 64.0 | – | – | 2.8 | 30.0 | – | 0.6 | 1.0 | Mn 0.8 |
| Monel R405 | 0.15 | – | – | – | 66.0 | – | – | – | 31.0 | – | – | – | – |
| Size (inches/mm) | Weight (kg/m) | Weight (kg/ft) |
|---|---|---|
| 1/8" / 3 mm | 0.062 | 0.019 |
| 5/32" / 5 mm | 0.095 | 0.029 |
| 3/16" / 6 mm | 0.141 | 0.043 |
| 7/32" / 7 mm | 0.190 | 0.058 |
| 1/4" / 8 mm | 0.249 | 0.076 |
| 5/16" / 10 mm | 0.387 | 0.118 |
| 3/8" / 11 mm | 0.557 | 0.170 |
| 7/16" / 12 mm | 0.761 | 0.232 |
| 1/2" / 13 mm | 0.994 | 0.303 |
| 9/16" / 14 mm | 1.256 | 0.383 |
| 5/8" / 15 mm | 1.551 | 0.473 |
| 11/16" / 17 mm | 1.880 | 0.573 |
| 3/4" / 18 mm | 2.237 | 0.682 |
| 20 mm | 2.470 | 0.753 |
| 22 mm | 2.979 | 0.908 |
| 24 mm | 3.543 | 1.080 |
| 25 mm | 3.871 | 1.180 |
| 26 mm | 4.170 | 1.271 |
| 27 mm | 4.490 | 1.368 |
| 30 mm | 5.548 | 1.691 |
| 32 mm | 6.314 | 1.894 |
| 35 mm | 7.553 | 2.390 |
| 36 mm | 7.999 | 2.438 |
| 38 mm | 8.903 | 2.792 |
| 40 mm | 9.872 | 3.009 |
| 45 mm | 12.555 | 3.807 |
| 48 mm | 14.205 | 4.330 |
| 50 mm | 15.414 | 4.698 |
| 60 mm | 22.205 | 6.768 |
| 1" / 25.4 mm | 3.00 | 0.914 |
| 2" / 50 mm | 15.906 | 4.848 |
| 3" / 75 mm | 35.762 | 10.900 |
| 4" / 100 mm | 63.340 | 19.306 |
| 5" / 125 mm | 99.940 | 30.461 |
| 6" / 150 mm | 143.900 | 43.860 |
| 7" / 175 mm | 196.000 | 59.432 |
| 8" / 200 mm | 254.550 | 77.586 |
| 10" / 250 mm | 397.140 | 121.048 |
| Hex Bar Size (inches) | Weight per Ft (lbs) | Weight per 12′ (lbs) |
|---|---|---|
| 3/16″ | 0.104 | 1.248 |
| 1/4″ | 0.180 | 2.160 |
| 5/16″ | 0.290 | 3.480 |
| 3/8″ | 0.625 | 4.920 |
| 7/16″ | 0.560 | 6.720 |
| 1/2″ | 0.740 | 8.880 |
| 9/16″ | 0.930 | 11.160 |
| 5/8″ | 1.150 | 13.800 |
| 11/16″ | 1.390 | 16.680 |
| 3/4″ | 1.660 | 19.920 |
| 13/16″ | 1.950 | 23.400 |
| 7/8″ | 2.300 | 27.600 |
| 15/16″ | 2.625 | 31.200 |
| 1″ | 2.900 | 34.800 |
| 1-1/16″ | 3.300 | 39.600 |
| 1-1/8″ | 3.700 | 44.400 |
| 1-1/4″ | 4.625 | 55.200 |
| 1-5/16″ | 5.100 | 61.200 |
| 1-3/8″ | 5.625 | 67.200 |
| 1-7/16″ | 6.100 | 73.200 |
| 1-1/2″ | 6.625 | 79.200 |
| 1-5/8″ | 7.800 | 93.600 |
| 1-3/4″ | 9.030 | 108.360 |
| 1-7/8″ | 10.400 | 124.800 |
| 2″ | 11.800 | 141.600 |
| 2-1/4″ | 14.920 | 179.040 |
| 2-3/8″ | 16.920 | 203.040 |
| 2-1/2″ | 18.420 | 221.040 |
| 3″ | 26.530 | 318.360 |
| Diameter (in) | Diameter (mm) | Size (in fractional) | Density (lbs/in³) | Weight (lbs/ft) | Weight (kg/m) |
|---|---|---|---|---|---|
| 0.25 | 6.35 | 1/4 | 0.319 | 0.187 | 0.2783 |
| 0.281 | 7.1374 | 9/32 | 0.319 | 0.237 | 0.3527 |
| 0.343 | 8.7122 | 11/32 | 0.319 | 0.354 | 0.5268 |
| 0.375 | 9.525 | 3/8 | 0.319 | 0.421 | 0.6265 |
| 0.406 | 10.3124 | 13/32 | 0.319 | 0.495 | 0.7367 |
| 0.437 | 11.0998 | 7/16 | 0.319 | 0.574 | 0.8542 |
| 0.468 | 11.8872 | 15/32 | 0.319 | 0.649 | 0.9658 |
| 0.5 | 12.7 | 1/2 | 0.319 | 0.749 | 1.1147 |
| 0.531 | 13.4874 | 17/32 | 0.319 | 0.846 | 1.2590 |
| 0.562 | 14.2748 | 9/16 | 0.319 | 0.948 | 1.4108 |
| 0.593 | 15.0622 | 19/32 | 0.319 | 1.06 | 1.5775 |
| 0.625 | 15.875 | 5/8 | 0.319 | 1.17 | 1.7412 |
| 0.656 | 16.6624 | 21/32 | 0.319 | 1.29 | 1.9198 |
| 0.687 | 17.4498 | 11/16 | 0.319 | 1.42 | 2.1132 |
| 0.718 | 18.2372 | 23/32 | 0.319 | 1.55 | 2.3067 |
| 0.75 | 19.05 | 3/4 | 0.319 | 1.69 | 2.5151 |
| 0.781 | 19.8374 | 25/32 | 0.319 | 1.83 | 2.7234 |
| 0.812 | 20.6248 | 13/16 | 0.319 | 1.98 | 2.9466 |
| 0.843 | 21.4122 | 27/32 | 0.319 | 2.13 | 3.1699 |
| 0.875 | 22.225 | 7/8 | 0.319 | 2.29 | 3.4080 |
| 0.906 | 23.0124 | 29/32 | 0.319 | 2.46 | 3.6610 |
| 0.937 | 23.7998 | 15/16 | 0.319 | 2.63 | 3.9140 |
| 0.968 | 24.5872 | 31/32 | 0.319 | 2.81 | 4.1818 |
| 1 | 25.4 | 1 | 0.319 | 3.00 | 4.4646 |
| Section / Shape | Size (mm) | Permitted Variation (mm) |
|---|---|---|
| Flat (Thickness) | < 18 | +0 to -0.110 |
| >18 ≤ 30 | +0 to -0.130 | |
| >30 ≤ 50 | +0 to -0.250 | |
| >50 ≤ 80 | +0 to -0.350 | |
| Flat (Width) | < 18 | +0 to -0.110 |
| >18 ≤ 30 | +0 to -0.130 | |
| >30 ≤ 50 | +0 to -0.160 | |
| >50 ≤ 80 | +0 to -0.190 | |
| >80 ≤ 100 | +0 to -0.220 | |
| >100 ≤ 130 | +0 to -0.350 | |
| >130 ≤ 160 | +0 to -1.00 | |
| >160 ≤ 320 | ±1.00 | |
| Square & Hexagon | ≥6 ≤ 18 | +0 to -0.090 |
| >18 ≤ 30 | +0 to -0.110 | |
| >30 ≤ 50 | +0 to -0.130 | |
| >50 ≤ 80 | +0 to -0.160 | |
| >80 ≤ 105 | +0 to -0.250 | |
| Round | ≥6 ≤ 18 | +0 to -0.070 |
| >18 ≤ 30 | +0 to -0.085 | |
| >30 ≤ 50 | +0 to -0.100 | |
| >50 ≤ 80 | +0 to -0.120 | |
| >80 ≤ 100 | +0 to -0.140 |
| US Bar | Bar Size (US) | Metric (mm) | Bar Size (Metric) | Japanese (mm) | Bar Size (JP) | Canadian / ASTM (mm) | Bar Size (CAN/ASTM) |
|---|---|---|---|---|---|---|---|
| 0.250 | #2 | 5 | 5 | 6 | 6 | 100 | 10M |
| 0.375 | #3 | 5.5 | 5.5 | 10 | 10 | 200 | 15M |
| 0.500 | #4 | 6 | 6 | 13 | 13 | 300 | 20M |
| 0.625 | #5 | 7 | 7 | 16 | 16 | 500 | 25M |
| 0.750 | #6 | 8 | 8 | 19 | 19 | 700 | 30M |
| 0.875 | #7 | 9 | 9 | 22 | 22 | 1000 | 35M |
| 1.000 | #8 | 10 | 10 | 25 | 25 | 1500 | 45M |
| 1.125 | #9 | 11 | 11 | 29 | 29 | 2500 | 55M |
| 1.250 | #10 | 12 | 12 | 32 | 32 | – | – |
| 1.375 | #11 | 14 | 14 | 35 | 35 | – | – |
| 1.500 | #12 | 16 | 16 | 38 | 38 | – | – |
| 1.625 | #13 | 18 | 18 | 41 | 41 | – | – |
| 1.750 | #14 | 20 | 20 | 44 | 44 | – | – |
| 1.875 | #15 | 22 | 22 | 48 | 48 | – | – |
| 2.000 | #16 | 25 | 25 | 51 | 51 | – | – |
| 2.250 | #18 | 28 | 28 | 57 | 57 | – | – |
| – | – | 32 | 32 | – | – | – | – |
| – | – | 36 | 36 | – | – | – | – |
| – | – | 40 | 40 | – | – | – | – |
| – | – | 44 | 44 | – | – | – | – |
| – | – | 50 | 50 | – | – | – | – |
| Description | Price (INR per unit) | Price (USD) | Price (EURO) |
|---|---|---|---|
| Nickel Copper Round Bar, Grade Niclal 400 (Monel 400), Dia 12.2 × 3500 mm | 1,069 | 14.50 | 11.96 |
| Nickel Alloy Round Bar, Grade Monel 400 UNS N04400 | 869 | 11.79 | 9.72 |
| Monel 400 Round Bar (Goods for Re-export, No Ex-Bonding Allowed) | 37,404 | 507.48 | 418.44 |
| Monel 400 Round Bar (Goods for Re-export, No Ex-Bonding Allowed) | 106,270 | 1,441.82 | 1,188.84 |
| Nickel Copper Round Bar, Monel 400, Dia 14.28 × 3000 mm H12 | 1,254 | 17.01 | 14.03 |
| Nickel Copper Round Bar, Grade Niclal 400 (Monel 400), Dia 12.2 × 3500 mm | 1,190 | 16.15 | 13.31 |
| Nickel Alloy Round Bar, Grade Monel [Ni 65%, Cu 32%] | 447 | 6.06 | 5.00 |
| Round Bar Niclal 400, Dia 12.2 × 3500 mm H12 (Monel 400 ASTM B-164) | 1,212 | 16.44 | 13.56 |
| UNS N04400 Monel 400 Rectangular Bars | UNS 4400 Monel Polished Bars Stock |
| Monel 400 Square Bars Bright | Monel 400 Grade Bright Bars Cold Drawn |
| ASTM B164 Alloy 400 Square Bars Annealed | Monel 400 UNS N04400 Bright Bars Flat |
| Monel 2.4360 Threaded Bars M16 | Monel 400 Threaded Rods |
| Alloy 400 Monel 2.4360 Rectangular Bars Cold Drawn | Werkstoff 2.4360 Monel Polished Square Bars |
| Monel 2.4360 Rectangular Bars Polished | Monel ASTM B164 Polished Round Bars |
| 2.4360 Monel 400 Threaded Bars M12 | Monel 400 ASTM B164 Threaded Bars Stock |
| Monel UNS N04400 Square Bars | UNS N04400 Monel 400 Polished Flat Bars |
| 2.4360 Monel 400 Rectangular Bars Bright | Monel Grade 400 Bright Bars Hollow |
Monel round bars are renowned for their exceptional corrosion resistance, high strength, and durability in harsh environments. Common applications include:
ASTM B164 is the standard specification for nickel-copper alloy (Monel) bars. Monel 400 and K500 are the most common grades, offering excellent corrosion resistance and high strength.
Monel bars are available in diameters from 3 mm (1/8") up to 300 mm (12") and in lengths up to 12 feet or customized as per requirement.
Monel is a nickel-copper alloy used for its excellent corrosion resistance and high strength. It is commonly used in marine, offshore, chemical, oil & gas, and aerospace applications, including pumps, valves, fasteners, heat exchangers, and seawater equipment.
An EN8 round bar is a medium carbon steel known for good strength and machinability. It is widely used in shafts, bolts, studs, gears, and general engineering components and can be heat treated for improved performance.