Monel Round Bars
Monel Round Bars Manufacturer & Supplier in India
Monel round bars are high-performance nickel-copper alloy products widely used in industries that require excellent corrosion resistance, high strength, and long-term durability. These bars are primarily manufactured from Monel alloys that contain a high percentage of nickel and copper, providing outstanding resistance to seawater corrosion, acids, and harsh industrial environments. Because of these properties, monel round bars are widely used in marine engineering, chemical processing equipment, oil and gas components, pumps, valves, and heat exchanger systems.
Monel 400 (UNS N04400) and Monel K500 (UNS N05500) are the two primary grades available in the Monel alloy family. Monel 400 round bars offer excellent resistance to corrosion in seawater and acidic environments, making them ideal for marine and chemical industries. In comparison, Monel K500 round bars provide enhanced strength and hardness due to precipitation hardening, making them suitable for high-stress industrial applications. Monel rods and monel bar stock are available in various diameters, finishes, and specifications to meet different engineering requirements.
Stellar Alloys Steel Pipes and Tubes is a trusted manufacturer and supplier of premium-quality monel round bars, including monel 400 round bars and monel K500 round bars, produced according to internationally recognized material standards. The company focuses on supplying high-performance nickel alloys that deliver reliability and long service life in demanding industrial applications.
Stellar Alloys supplies Monel 400 round bars and Monel K500 round bars to ASTM B164 and ASTM B865 specifications with full material test certificates. Products are available from stock in diameters 6 mm to 500 mm, with third-party inspection support available on request. Export shipments are regularly supplied to UAE, Saudi Arabia, USA, UK, Singapore, and Australia, supporting industries such as marine engineering, petrochemicals, offshore oil and gas, and power generation.
Table of Contents
- Types of Monel Round Bars
- Monel Round Bars Specifications
- Chemical Composition of Monel 400 (UNS N04400) & K500 (UNS N05500) Round Bars
- Mechanical Properties of Monel 400 & Monel K500 Round Bars
- Monel Round Bars Sizes & Weight Chart
- Monel Round Bars Price List
- Applications & Uses of Monel Round Bars
- Monel 400 vs Monel K500 — Key Differences
- Testing & Certifications for Monel Round Bars
- FAQs about Monel Round Bars
Types of Monel Round Bars
We manufacture stainless steel round bars in multiple grades and finishes to meet diverse industrial requirements:
Monel 400 Round Bars
Monel K500 Round Bars
Monel 400 Round Bars
Monel 400 round bars are nickel-copper alloy bars known for their excellent corrosion resistance and high strength in marine and chemical environments. These bars provide outstanding resistance to seawater, acids, and alkaline solutions. Monel 400 round bars are widely used in marine components, pump shafts, heat exchangers, and chemical processing equipment due to their durability and reliability.
Monel K500 Round Bars
Monel K500 round bars are precipitation-hardened nickel-copper alloy bars that offer higher strength and hardness compared to Monel 400. These bars maintain excellent corrosion resistance while providing improved mechanical properties, making them suitable for high-stress applications such as marine shafts, fasteners, oil and gas components, and industrial equipment.
Monel Round Bars Specifications
| Specification | Details |
| Material | Monel Alloy |
| Grades | Monel 400, Monel K500 |
| UNS Numbers | Monel 400: UNS N04400 / Monel K500: UNS N05500 |
| DIN Equivalent | Monel 400: DIN 2.4360 / Monel K500: DIN 2.4375 |
| Form | Monel Round Bars / Monel Rods / Monel Bar Stock |
| Diameter | 6 mm to 500 mm |
| Length | 3 m to 6 m |
| Finish | Black, Bright, Polished |
| Condition | Monel 400: Hot Rolled / Annealed / Cold Drawn Monel K500: Annealed or Age Hardened (H Condition) |
| Surface Treatment | Hot Rolled, Cold Drawn, Peeled, Turned & Polished, Centerless Ground |
| Standards | ASTM B164, ASTM B865, ASME, DIN, EN |
Chemical Composition of Monel 400 (UNS N04400) & K500 (UNS N05500) Round Bars
Element | Monel 400 (%) | Monel K500 (%) |
Nickel | 63 – 70 | 63 – 70 |
Copper | 28 – 34 | 27 – 33 |
Iron | 2.5 max | 2.0 max |
Manganese | 2.0 max | 1.5 max |
Carbon | 0.30 max | 0.25 max |
Silicon | 0.50 max | 0.50 max |
Sulfur | 0.024 max | 0.010 max |
Aluminum | — | 2.3 – 3.15 |
Titanium | — | 0.35 – 0.85 |
Note: The chemical composition of Monel round bars follows ASTM B164 (Monel 400) and ASTM B865 (Monel K500) standards, ensuring excellent corrosion resistance and mechanical stability in marine and chemical environments.
Mechanical Properties of Monel 400 & Monel K500 Round Bars
Property | Monel 400 | Monel K500 |
Tensile Strength | 550 MPa | 965 MPa |
Yield Strength | 240 MPa | 690 MPa |
Elongation | 35% | 20% |
Hardness | 150 HB | 270 HB |
Density | 8.83 g/cm³ | 8.44 g/cm³ |
Melting Range | 1300 – 1350°C | 1315 – 1350°C |
Note: Mechanical properties listed for Monel K500 represent the age-hardened (H) condition as per ASTM B865. In the annealed condition, Monel K500 typically exhibits tensile strength of approximately 690 MPa and yield strength of around 310 MPa.
Monel Round Bars Sizes & Weight Chart
Monel round bars are available in a wide range of diameters suitable for various industrial applications. The table below shows approximate weight per metre for Monel 400 round bars, which helps engineers and procurement teams estimate material requirements and shipping weights.
Diameter (mm) | Approx Weight (kg/m) |
10 mm | 0.62 |
20 mm | 2.47 |
25 mm | 3.85 |
32 mm | 6.31 |
40 mm | 9.86 |
50 mm | 15.40 |
65 mm | 26.00 |
80 mm | 39.40 |
100 mm | 61.50 |
Note: Dimensional tolerances for Monel round bars typically follow ASTM B164 standards. Custom diameters and lengths can also be supplied based on project requirements.
Monel Round Bars Price List
Product | Size | Approx Price |
Monel Round Bars | 10 mm – 50 mm | ₹1300 – ₹2000 per kg |
Monel 400 Round Bars | 20 mm – 200 mm | ₹1400 – ₹2200 per kg |
Monel K500 Round Bars | 20 mm – 200 mm | ₹1800 – ₹2600 per kg |
Note:
- Prices may vary depending on size, grade, and quantity.
- Additional Information for International Buyers
- Prices shown are indicative INR per kg rates. International buyers can contact us for pricing in USD or AED.
- Payment Modes:
LC (Letter of Credit), TT (Telegraphic Transfer), Cheque - Export Destinations:
UAE, Saudi Arabia, USA, UK, Singapore, South Africa, and Australia.
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
Applications & Uses of Monel Round Bars
Monel round bars are widely used in industries that require excellent corrosion resistance, high strength, and long-term reliability in harsh environments. Due to their nickel-copper composition, Monel 400 and Monel K500 round bars perform exceptionally well in marine, chemical, and high-pressure industrial systems.
- Marine Engineering
Monel 400 and Monel K500 round bars are specified for propeller shafts, rudder stocks, marine fasteners, and seawater valve components because they are highly resistant to pitting and crevice corrosion in chloride-rich seawater environments. - Oil & Gas Industry
Monel K500 round bars are commonly used for downhole valve stems, pump shafts, and instrumentation components in oil and gas operations where exposure to H₂S, CO₂, and saline environments requires both corrosion resistance and high mechanical strength. - Chemical Processing Industry
Monel 400 round bars are widely used in reactor components, agitator shafts, column internals, and heat exchanger parts because the alloy provides excellent resistance to hydrofluoric acid, hydrochloric acid, alkalis, and salt solutions. - Heat Exchangers & Condensers
Monel rods and round bars are used in heat exchanger systems, condenser tubes, and thermal equipment components where materials must withstand high temperatures, corrosive fluids, and continuous operational stress. - Pumps, Valves & Industrial Fasteners
Monel bar stock is commonly machined into pump shafts, valve trim components, studs, and high-strength fasteners because the alloy maintains its strength and corrosion resistance even in aggressive chemical environments. - Power Generation Plants
In power plants, Monel round bars are used in turbine components, seawater cooling systems, and high-pressure piping assemblies where long-term durability and resistance to corrosion are critical for operational reliability. - Aerospace & Exhaust Systems
Monel K500 round bars are used in aircraft engine components, exhaust collector rings, and structural fasteners where the combination of high strength, corrosion resistance, and reliability under extreme conditions is essential.
Monel 400 vs Monel K500 — Key Differences
Understanding the difference between Monel 400 round bars and Monel K500 round bars helps engineers and procurement teams choose the correct alloy based on strength, corrosion resistance, and operating conditions.
Property | Monel 400 | Monel K500 |
UNS Number | N04400 | N05500 |
ASTM Standard | ASTM B164 | ASTM B865 |
DIN Equivalent | 2.4360 | 2.4375 |
Key Addition vs 400 | — | Aluminum + Titanium (precipitation hardening) |
Tensile Strength | 550 MPa (annealed) | 965 MPa (age-hardened) |
Hardness | 150 HB | 270 HB |
Corrosion Resistance | Excellent | Excellent (similar to Monel 400) |
Primary Applications | Marine equipment, chemical processing, heat exchangers | Marine shafts, oil & gas downhole tools, aerospace fasteners |
Testing & Certifications for Monel Round Bars
To ensure the highest quality standards, Monel round bars undergo strict testing and inspection procedures during manufacturing and before shipment. These quality control measures guarantee compliance with international standards and reliable performance in critical applications.
- Chemical Composition Analysis
Each batch of Monel 400 and Monel K500 round bars is tested using PMI (Positive Material Identification) or spectrometric analysis to verify the correct nickel, copper, aluminum, and titanium composition according to ASTM standards. - Mechanical Property Testing
Mechanical tests such as tensile strength, yield strength, elongation, and hardness testing are conducted to confirm that the material meets the required specifications for industrial applications. - Corrosion Resistance Testing
Where required, corrosion resistance testing may be performed in accordance with ASTM G48 or equivalent standards to evaluate resistance to pitting and crevice corrosion in aggressive environments. - Dimensional Inspection
All Monel rods and round bars are inspected for diameter accuracy, straightness, and surface finish to ensure they meet dimensional tolerances. - Non-Destructive Testing (NDT)
Additional testing such as Ultrasonic Testing (UT) or Dye Penetrant Testing (PT) may be carried out upon request to detect internal or surface defects. - Material Test Certificates (MTC)
All shipments are supplied with Material Test Certificates in accordance with EN 10204 3.1, confirming chemical composition, mechanical properties, and compliance with ASTM standards.
FAQs about Monel Round Bars
Monel 400 (UNS N04400) provides outstanding corrosion resistance in seawater, acids, and alkaline environments and is the standard choice for marine and chemical applications. Monel K500 (UNS N05500) contains additions of aluminum and titanium that allow it to be precipitation-hardened (aged), achieving approximately double the tensile strength of Monel 400. Specify K500 when higher mechanical strength is required alongside corrosion resistance — such as pump shafts, marine propellers, and downhole oil and gas components.
Monel 400 round bars are manufactured to ASTM B164 (UNS N04400). Monel K500 round bars are manufactured to ASTM B865 (UNS N05500). Both specifications cover chemical composition, mechanical properties, dimensional tolerances, and testing requirements for nickel-copper alloy bar products.
Monel round bars are nickel-copper alloy bars that offer excellent corrosion resistance and high strength in marine and chemical environments.
They are commonly used in marine engineering, chemical processing, oil and gas equipment, and heat exchanger systems due to their corrosion resistance and durability.