Bimetal Washers
Bimetal washers also known as bimetallic washers are specially engineered components made by bonding two dissimilar metals typically copper on one side & aluminium on the other. These washers are manufactured using a rolling bonding process, where copper (sheet metal) is permanently clad onto pure aluminium (base metal) to form a strong mechanical bond. Unlike electroplating or alloys, the metals are not fused chemically but joined through pressure and heat to create a durable & inseparable layer. With an 80:20 composition ratio (80% aluminium and 20% copper), these washers are used in electrical or industrial applications that require high conductivity, mechanical strength & corrosion resistance.Bimetal sheet are popular products that used for electrical devices. It is composed of different separate metals combined together. It converts the changes of temperature into the mechanical displacement. It is widely used for the connections between aluminium conductor as well as copper. The bimetallic washers and plate help to prevent the problem’s onset. The bimetallic products are obtained by explosion welding.
Key Features :
- High durability and tensile strength
- Excellent resistance to corrosion and stress cracking (SCC)
- Withstands high temperatures and pressure
- Rugged construction with dimensional accuracy
- Long service life with perfect surface finish
Bimetal Washers Manufacturer & Supplier In India
Kalpataru Piping Solutions is a leading bimetal washer manufacturer in India and offers high-quality & durable products to specific industrial applications. We specialize in manufacturing high-quality bimetal washers made by bonding copper and aluminum together with the help of an advanced roll-bonding technology. We design washers with a standard ratio of aluminum to copper or as per the specific composition or designs provided by our clients. They are available in both metric and inch sizes. Our washers are designed for high performance in electrical & mechanical systems. We ensure timely delivery, affordable pricing & great customer support. Our bimetal washers are exported worldwide & known for their consistent performance under high pressure, temperature & mechanical stress.
Why Choose Kalpataru Piping?
- Customized Manufacturing: Design bimetal washer as per customer specific designs to fulfill business needs.
- Quality Materials: Produced by using high-grade raw materials to ensure strength, corrosion resistance & long service life.
- Precision Engineering: Designed to meet international standards like ASTM, ASME, JIS & API.
- Advanced Testing: Every washer is tested for PMI, hardness, macro-micro structure & corrosion resistance.
- Wide Applications: Used in circuit breakers, transformers, isolators, power plants, automotive parts, offshore structures & more.
Bimetal Washers Types
As a trusted bimetal washer manufacturer, exporter & supplier in India offer many types of washers in different sizes, thicknesses & compositions based on customer specifications.
Bimetallic Round Washers
Our bimetal round washers are designed using a combination of copper and aluminium (typically 20 Cu & 80 Al). They are used for applications that require excellent conductivity, corrosion resistance & mechanical strength. These are commonly used in electrical and industrial systems for high performance.
Bimetallic Square Washers
Our bimetal square washers are known for their high durability and great resistance to galvanic corrosion. These flat washers are also available in square shapes, designed with precision. They are used in sectors like oil & gas, petrochemicals, aviation & automotive.
Bimetallic Washers Specifications
| Material | Aluminium+Copper |
| Thickness | 1mm to 3mm |
| Size | M3 To M100 |
| Standard | AISI,ASTM,DIN,GB |
Bimetal Washers Technical Parameters
| Bimetal Washers | Base layer thickness(mm) | Cover layer thickness(mm) |
| Cu-Al block | Cu δ38~40 | Al δ10~12 |
| Al-Steel block | Steel δ38~40 | Alδ10~12 |
Mechanical Properties of Bimetallic Washers
| Material Grade | Copper T2, Aluminum 1060 |
| Copper purity | 99.9%min |
| Aluminum purity | 99.6%min |
| Ratio for Aluminum : Copper (Volume) | 80% : 20% |
| Ratio for Aluminum : Copper (Weight) | 55% : 45% |
| Density(g/cm3) | 3.8 |
| Resistivity(Ω mm2/m) | <0.019 |
| Tensile Strength(N/mm2) | more than 120 |
| Elongation (%) | 27-38 |
| Peeling Strength(N/mm) | more than 12 |
| Hardness | H24 (half hard) |
Physical Properties of Bimetal Washers
| Element | Tensile Strength | Shearing Strength | heat Temperature | Interface Combination Rate | Interface Full Figure |
| Bimetal Washers | ≥150 Mpa/mm2 | ≥95 Mpa/mm2 | ≦ 400 ℃ | 100% | undulant |
Bimetallic Washers Price
At Kalpataru Piping Solutions, we offer the best affordable prices for bimetallic washers without compromising on quality or performance. We understand that every project has unique technical & budget requirements. We provide pricing options based on washer size, thickness, composition & quantity. Bimetal round or square washers are available with standard sizes or fully customized dimensions. Offer cost-effective solutions that meet industry standards and client specifications. For the latest bimetallic washer price details and customized quotations, reach out to our sales team. We ensure fast response times, transparent pricing, and reliable delivery across India and worldwide.
Applications of Bimetal Washers
Bimetallic washers are specialized components made by bonding two dissimilar metals mainly copper and aluminum to deliver unique mechanical or electrical properties. Their dual-metal construction allows them to handle complex industrial application needs, including conductivity, thermal expansion & corrosion resistance. Kalpataru Piping Solutions supplies high-quality bimetallic washers to use across multiple industries for the following applications:
- Circuit Protection Systems: They are used in circuit breakers & fuse systems to support thermal or electrical sensitivity for ensuring effective circuit interruption during faults.
- Electrical & Electronic Devices: These washers used to maintain electrical continuity & reduce contact resistance, making them ideal for use in connectors, switches & distribution panels.
- Power Transmission & Isolators: In high-voltage isolators & terminals, bimetal washers help minimize galvanic corrosion and improve current-carrying performance.
- Fire Safety Systems: Bimetallic washers are incorporated in fire alarms & heat-sensitive systems where they act as reliable thermal triggers to activate alarms.
- Temperature-Sensitive Instruments: In devices like thermometers & thermostats, these washers respond to temperature changes, providing precise mechanical movement or switching action.
Want to buy premium bimetallic washers?
Get durable, high-performance bimetal washers products for your business needs. Need bulk orders or custom sizes? Talk to our team today!
Frequently Asked Questions About Bimetal Washers
What are Bimetallic Washers?
Bimetallic washers consist of copper cladded on pure aluminum, joined by a rolling bonding process. They are mechanically welded sheets, not alloys or electroplated.
What are the types of bimetal washers?
Common types include round (flat) washers and square washers, made with copper and aluminum layers.
Which grades of bimetal washers are available in India?
Grades vary based on copper and aluminum composition, typically 80% aluminum and 20% copper, meeting standards like ASTM, ASME, JIS, and API.
What are the various standards available for bimetallic washers?
Standards include ASTM, ASME, JIS, API, and other industry-specific certifications.
What are the standard sizes available for bimetallic washers?
Sizes vary by thickness, outer diameter, and inner diameter; available in both metric (mm) and imperial (inches) units.
What is the price of bimetallic steel washers?
Prices depend on size, quantity, and specifications. Contact suppliers for a customized quote.
Do you provide products with any custom size requirements?
Yes, custom sizes and specifications are supported based on client needs.
