Monel Round Bar

Round Bar

M-Pipe & Fitting Solution Inc is a reputable business that makes and sells high-quality monel round bars. Monel Round Bar, also called Monel bars, is a type of nickel-copper alloy that resists corrosion very well in many different conditions. Because they are so reliable and have great qualities, they are used a lot in the marine, chemical processing, oil and gas, and aerospace industries. Monel Round Bars, including what they are made of, how they work, what they can be used for, and how to weld them.

How Monel Round Bars are Made: 

About 63–70% of Monel Round Bars are made of nickel, and about 28–34% are made of copper. Small amounts of iron, manganese, carbon, and silicon may also be in them. The metal gets its name from Special Metals Corporation, the company that made it. There are different grades of Monel round bars. The most popular ones are Monel 400 and Monel K500. About 67% of Monel 400 is nickel and 30% is copper. Monel K500 has extra elements like aluminum and titanium that make it stronger and harder.

Monel Round Bars Have the Following Traits:

Corrosion-Resistance: Monel Round Bars are very resistant to rust in seawater, acids (sulfuric, hydrochloric, and phosphoric), alkalis, and non-oxidizing media.

High Strength: Monel Round Bars have great mechanical properties, such as high tensile strength and resistance to impact, which makes them good for uses that require a lot of strength.

Heat Resistance: These round bars can handle high temperatures and keep their shape at both high and low temps.

Low Magnetic Permeability: Monel Round Bars don’t let much magnetic interference through, which makes them useful in situations where magnetic interference needs to be kept to a minimum.

Excellent Weldability: Gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) are just two ways to easily join Monel Round Bars.

Good ability to be made into different shapes: Monel Round Bars can be easily made into rods, sheets, plates, and forgings, giving them a wide range of uses.

Monel Round Bars Can Be Used For:

Due to their high resistance to corrosion in seawater, Monel Round Bars are used a lot in the marine industry for things like shipbuilding, offshore structures, and equipment that handles saltwater.

Chemical Processing: These round bars are used a lot in the chemical business to make equipment and parts that come into contact with corrosive chemicals. Monel Round Bars are used in the oil and gas industry for research, production, and refining, especially in environments with sulfuric acid, hydrofluoric acid, and brine solutions.

Aerospace Industry: These round bars are used in the aerospace industry to make parts that need to be resistant to both high temperatures and toxic environments. Monel Round Bars are used in electrical and computer parts because they conduct electricity well and won’t rust in corrosive environments. In the medical industry, these round bars are used in things like surgical and dental tools, where corrosion protection is very important.

Food Processing: In the food processing business, Monel Round Bars are used to make equipment that comes into contact with corrosive food substances.

Welding Techniques for Monel Round Bars: It is important to use the right techniques when welding Monel Round Bars to make sure the joints are strong and reliable. Some common ways to weld Monel are the following:

Gas Tungsten Arc Welding (GTAW): TIG welding, which is another name for GTAW, is a popular way to join Monel Round Bars. It makes a good weld joint by using a tungsten electrode and a protecting gas.

Gas Metal Arc Welding (GMAW): GMAW, which is also called MIG welding, is another common way to join Monel together. It uses a wire electrode that is used up and a protecting gas to make the weld joint.

Shielded Metal Arc Welding (SMAW): Also called “stick welding,” SMAW is another way to join Monel Round Bars together. For this, a coated electrode is used to provide both the filler metal and the protective gas.

When welding Monel Round Bars, it is important to take the following measures and think about the following things:

Cleanliness: Before welding, the sides of the Monel Round Bars should be cleaned well to get rid of any dirt, oil, or grease that might be on them. You can use solvents or mechanical cleaning ways to do this.

Preheating: In some cases, you may need to heat the Monel Round Bars before you weld them to lower the chance of cracking and make sure the weld is done right. The temperature for preheating should depend on the type of Monel metal and how it will be welded.

Welding Parameters: The current, voltage, travel speed, and electrode size should be chosen based on the thickness of the Monel Round Bars and the specific welding method used. For the best results, you must follow the manufacturer’s instructions and welding methods.

Post-Weld Heat Treatment: Depending on the application and the needs of the welded joints, post-weld heat treatment may be needed to ease residual stresses and improve the mechanical qualities of the welds.

Consumables: To make high-quality welds, it’s important to use the right filling materials. Monel filler rods or lines with the same chemical makeup as the base metal are often used to make sure they work well together and keep the alloy’s resistance to corrosion.

Welding Environment: It is important to do welding in a clean and controlled environment to keep the welds from getting messed up and to make sure they are strong. Keeping drafts away from the area where you are welding and using the right shielding gases or fluxes can help keep the welding arc solid and stop oxidation.

In short, Monel Round Bars are nickel-copper alloy rods that can be used in many different businesses and are resistant to corrosion. Because of their great strength, resistance to heat, and ability to be welded, they are used in the marine, chemical processing, oil and gas, aerospace, electrical, medical, and food processing industries, among others. When working with Monel Round Bars, strong and reliable weld joints can be made by using the right welding methods and following the suggested steps. M-Pipe & Fitting Solution Inc. sells certified round bars that meet API, ASTM, and ISO 9001:2015 worldwide standards.


Specifications:ASTM B164 / ASTM SB164
Size:5 mm To 500 mm
Diameter:0.1 mm to 100 mm
Length:100 mm To 3000 mm Long & Above
Finish:Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Tolerance:H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Form:Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.


Monel 4000.30 max2.00 max 0.50 max28.00 – 34.00 2.50 max63.00 min0.024 
Monel K5000.25 max1.5 max0.5 max27.00 – 33.000.5 – 263.00 min0.010 max

ASTM B164 is a specification standard the American Society for Testing and Materials (ASTM) set for Monel round bars. Monel is a nickel-copper alloy known for its excellent corrosion resistance, high strength, and good mechanical properties. It is commonly used in various industries, including marine, chemical, and aerospace.

  • Gas Processing Industry
  • Pharmaceuticals Industry
  • Chemical Industry
  • Pulp and Paper Industry
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers