Monel plates and sheets are a performance nickel-copper alloy that has been designed to suit the conditions that need resistance to corrosion, strength retention and protracted service life. They have extensive applications in marine, chemical processing, oil and gas, and affordable applications of heat exchangers, which are subject to seawater, acidic, and harsh operating conditions.
Stellar Alloys is a reputable Monel plates and sheets supplier in India and has a complete collection of Monel alloy products such as plates, sheets, coils, strips, foils and also shim sheets. Monel 400 and Monel K500 are our main products, which are sold in the hot rolled and cold rolled form, with controlled thickness and surface finish. The materials are produced to ASTM standards and ASME standards and come with full traceability, mill test certification, and export packaging.
Table of Contents
- Overview of Monel Plates and Sheets
- Product Forms Supplied by Stellar Alloys
- Monel Grades Available at Stellar Alloys
- Dimensional Range and Surface Finishes
- Standards Followed for Monel Plates and Sheets
- Chemical Composition of Monel Alloys
- Mechanical Properties of Monel Plates and Sheets
- Industrial Applications of Monel Plates and Sheets
- Fabrication and Welding Considerations for Monel
- Monel Plate Thickness and Weight Guidance
- Frequently Asked Questions About Monel Plates and Sheets
Overview of Monel Plates and Sheets
Monel is a set of nickel alloys that are famed as having an outstanding resistance to corrosion in seawater, acids, and alkaline environments. In contrast to traditional stainless steels, Monel alloys do not lose their mechanical properties due to incessant exposure to the adverse influence of harsh chemicals and high-pressure conditions. The monel plates and sheets are generally used in critical parts, and they cannot tolerate failure.
Product Forms Supplied by Stellar Alloys

Monel Plates

Monel Sheets

Monel Coils and Strips

Monel Foils and Shim Sheets
Monel Grades Available at Stellar Alloys

Monel 400 Plates and Sheets (UNS N04400)
Monel 400 Plates and Sheets have a great strength and resistance to seawater, hydrofluoric acid, sulfuric acid, and alkaline solutions. It has great ductility, thermal conductivity, and stable mechanical performance, and therefore can be used in equipment in marine, heat exchangers, pumps, and valves.

Monel K500 Plates and Sheets (UNS N05500)
Monel K500 Plates and Sheets are produced using alloys that are corrosion-resistant and possess greater strength achieved by means of precipitation hardening. It is associated with offshore construction, marine fasteners, pump shafts, and high-load mechanical parts.
Dimensional Range and Surface Finishes
| Parameter | Details |
| Thickness | 0.5 mm to 50 mm |
| Width | Up to 2000 mm |
| Length | Up to 6000 mm |
| Rolling Condition | Hot Rolled and Cold Rolled |
| Surface Finish | 2B, BA, No.1, No.4 |
Standards Followed for Monel Plates and Sheets
| Specification Type | Standard |
| ASTM | ASTM B127 |
| ASME | ASME SB127 |
| UNS | N04400, N05500 |
| EN Equivalent | EN 10088 |
Chemical Composition of Monel Alloys
| Element | Monel 400 | Monel K500 |
| Nickel | 63% minimum | 63% minimum |
| Copper | 28–34% | 27–33% |
| Iron | 2.5% maximum | 2% maximum |
| Aluminum | – | 2.3–3.15% |
| Titanium | – | 0.35–0.85% |
Mechanical Properties of Monel Plates and Sheets
Property | Monel 400 | Monel K500 |
Tensile Strength | 480 MPa | 760 MPa |
Yield Strength | 170 MPa | 450 MPa |
Elongation | 35% | 20% |
Hardness | 65 HRB | 35 HRC |
Industrial Applications of Monel Plates and Sheets
- Marine engineering and seawater systems
- Heat exchangers and condensers
- Chemical reactors and processing equipment
- Offshore oil and gas platforms
- Pump and valve components
- Aerospace and defense fabrication
Fabrication and Welding Considerations for Monel
The monel plates and sheets are easily made by standard forming and machining. The welding is normally performed through the GTAW or GMAW process with equivalent filler metals. Correct management of heat input and post-weld cleaning is done to achieve maximum corrosion protection and mechanical functioning.
Looking to Purchase Monel Plates and Sheets
In case you are considering buying Monel plates or sheets in India, you must know the weight of the material to be able to properly estimate the cost, plan logistics, and fabrication needs. The price and delivery of the weight depend on grade, thickness, width, and cutting tolerance, where the former factors directly influence the latter.
Our Monel plates and sheets weight calculator helps in estimating the weight of the material depending on the dimensions that you require. This is used to assist buyers, engineers, and procurement teams in making sound decisions prior to making a quotation request.
Monel Plate Thickness and Weight Guidance
Stellar Alloys offers plate thickness and weight estimation services for Monel so that buyers can use these services to plan logistics and estimate costs. Calculation of weight is carried out using density, thickness, width and length.
Note: Calculated weights are indicative and subject to rolling tolerances.
Estimated Price Range for Monel Plates and Sheets
Monel plate and sheet prices vary based on grade, thickness, finish, and order quantity. The table below provides indicative price ranges to help buyers with initial cost estimation.
Monel Plates and Sheets Price Estimation Table
Monel Grade | Product Form | Thickness Range | Estimated Price Range (INR / Kg) | Action |
Monel 400 | Sheets | 0.5 mm to 3 mm | ₹3,800 – ₹4,600 | Request a Quote |
Monel 400 | Plates | 3 mm to 25 mm | ₹3,900 – ₹4,800 | Request a Quote |
Monel K500 | Sheets | 0.8 mm to 3 mm | ₹4,800 – ₹5,600 | Request a Quote |
Monel K500 | Plates | 3 mm to 30 mm | ₹5,000 – ₹6,200 | Request a Quote |
Monel Alloy | Coils / Strips | Custom thickness | Price on Request | Request a Quote |
Monel Alloy | Foils / Shim Sheets | Thin gauge | Price on Request | Request a Quote |
Why Choose Stellar Alloys for Monel Plates and Sheets
Stellar Alloys is known to provide certified Monel materials that have a steady quality and have accurate documentation. We hold stock in common of popularly demanded Monel grades and dimensions that can be quickly dispatched to projects that require time. EN 10204 3.1 mill test certificates and optional third-party inspection are provided with all the materials.
We have a technical team of employees who assist the customers in selecting the grades, guide them in fabrication, and optimize the thickness. Stellar Alloys operates as a long-term, not a transactional supplier with in-house cutting services, export-grade packaging, and worldwide supply experience.
Quality Assurance and Testing
- Positive Material Identification
- Ultrasonic Testing
- Tensile and Hardness Testing
- Dimensional Inspection
- Surface Quality Checks
- Third-Party Inspection on request
Monel Stock Availability
- Monel 400 Plates and Sheets
- Monel K500 Plates and Sheets
- Monel Coils and Strips
Related High Performance Alloy Products
- Monel Pipes and Tubes
- Inconel Plates and Sheets
- Hastelloy Plates and Sheets
- Super Duplex Steel Plates
Frequently Asked Questions About Monel Plates and Sheets
A Monel plate is a flat-rolled item manufactured using a nickel-copper alloy that has a high rate of corrosion resistance, particularly in sea and chemical conditions. Monel plates are generally available in Monel 400 and Monel K500 grades and are required where corrosion resistance and strength are important.
Monel is applied in areas where it has to deal with seawater, acids, alkalis, as well as high pressure. Typical applications are marine engineering, heat exchangers, chemical process equipment, offshore oil and gas, and pump and valve parts.
The cost of monel compared to carbon steel is high because the metal contains high levels of nickel; it is an alloy whose manufacture is a complicated process, and its production needs specialization. Its high resistance to corrosion, high service life, and minuscule maintenance requirements in hostile environments are reflected in its high cost.
Compared to most steels, Monel alloys have greater corrosion resistance and do not lose their mechanical properties in harsh conditions. Although high-strength steels can possess greater tensile strength, Monel is better in corrosive and marine environments, where the steel can break.
Monel 400 is a solid-solution alloy that has superior corrosion resistance and fair ductility. Monel K500 has added aluminum and titanium, which enables the material to be age-hardened and can achieve high strength, yet still has corrosion resistance.
Yes, Monel plates are extensively utilized in marine and offshore systems since they possess superior resistance to seawater corrosion, biofouling, and chloride-induced stress corrosion cracking.
Monel sheets may be welded by the normal welding processes like GTAW and GMAW with proper filler metals. Corrosion resistance and mechanical integrity are maintained by proper welding procedures after being fabricated.
