Cupro Nickel Washers Manufacturer & Supplier in India
Unifit Fastener is a reputable manufacturer and distributor of various copper nickel washers in many different varieties, like flat washers, star washers, square washers, sealing washers, slot washers and split washers. By having a substantial inventory of quality metal products and having a team of professional people, we are confident in the fact that each customer will be provided with washers of exacting quality. We provide products all over the world, helping industries get their products delivered with good time and reliability.
We have copper alloy washers that are characterised by high tensile strength, excellent durability and higher yield strength. Their outstanding conductivity and creep resistance render them best suited for low-temperature processing, heat exchangers and storage devices. The Cu-Ni 70/30 washers are very corrosive and ductile and resist stress corrosion cracking; hence, they are applicable in applications in medical equipment, jewellery, cooling plants, pneumatic chillers, seawater, and marine environments.
Cu-Ni 90/10 washers are mixed with very little nickel, and this helps to increase their performance under high temperatures and pressure. They are highly resistant against oxidation, and their structure is resistant to structural degradation in harsh environments. These washers are mostly applied in marine, offshore, chemical, petrochemical, and shipbuilding sectors with excellent long-life performance.
In Unifit Fastener, all products are tested to fit the industry standards, thus being safe and performing. Call us now to get high-quality copper and copper nickel washers at a good price. Customer satisfaction is the driving force that makes us offer products which will withstand the test of time.
Request QuoteTable of Contents
- What Are Cupro Nickel Washers?
- Types of Cupro Nickel Washer
- Copper Nickel Washer Specifications
- Send Your Enquiry
- Equivalent Grades Cupro Nickel Washer
- Chemical Composition of Cupro Nickel Washer
- Mechanical Properties of Cupro Nickel Washer
- Copper Washers Size Chart
- Copper Spring Washer Dimensions
- Applications of Copper & Cupro Nickel Washers
- People Ask About Duplex Steel Washer Manufacturer
What Are Cupro Nickel Washers?
Cupro nickel washers are specialty fasteners which have high corrosion resistance underwater (particularly in salt-water) and high thermal conductivity, making them ideal in marine, offshore, and heat exchanger applications, and come in grades such as 70/30 (C71500) and 90/10 (C70600) in either flat, lock, or spring washer.
Cu-Ni 70 30 Washers Supplier, Cupronickel 90 10 Washers Exporter in India, Cu-Ni Spring Washer, Cu-Ni Alloy Punched Washer, Cupronickel Washers, Copper Nickel Washers Manufacturer, Cu-Ni Flat Spring Washers Stockists, Cu-Ni Copper Alloy Machine Washer, Copper Nickel Star Washer, Copper Nickel Square Washers, Cupro Nickel Round Washer, ASTM / ASME SB 152 Cu-Ni Flat Washer.
Types of Cupro Nickel Washer
Cupro Nickel Star Washer
Cupro Nickel Spring Washer
Cupro Nickel Sealing Washer
Cupro Nickel Lock Washer
Cu-Ni Square Washer
Cu-Ni Split Washer
ASTM B151 Cupro Nickel Plain Washer tab washer
ASTM B151 Cu-Ni Flat Washer
ASME SB151 Cupro Nickel Tab Washer
Copper Nickel Washer Specifications
| Specification | Details |
|---|---|
| Standards / Specs | ASTM / ASME SB 61 / 62 / 151 / 152 |
| Dimensions | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
| Size Range | 1/2″ to 12″ |
| Applicable Standards | ASTM, ASME Washer, ANSI Washer, DIN Washer, EN Washer, BS Washer, etc. |
| Grades | Copper, Cupro Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500), UNS C71640 |
| Class / Pressure Ratings | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN |
Send Your Enquiry
Equivalent Grades Cupro Nickel Washer
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| Cupro Nickel 90/10 | 2.0872 | C70600 |
| Cupro Nickel 70/30 | 2.0882 | C71500 |
Chemical Composition of Cupro Nickel Washer
| Grade | Cu (%) | Mn (%) | Pb (%) | Ni (%) | Fe (%) | Zn (%) |
|---|---|---|---|---|---|---|
| 90/10 | 88.6 min | 1.0 max | 0.05 max | 9–11 | 1.8 max | 1 max |
| 70/30 | 65 min | 1.0 max | 0.05 max | 29–33 | 0.4–1.0 | 1 max |
Mechanical Properties of Cupro Nickel Washer
| Grade | Density (lb/in³) | Melting Point (°F) | Tensile Strength (psi) | Yield Strength (0.2% Offset) (psi) | Elongation (%) |
|---|---|---|---|---|---|
| 90/10 | 0.323 | 2260 | 50,000 | 20,000 | 30 |
| 70/30 | 0.323 | 2260 | 50,000 | 20,000 | 30 |
Copper Washers Size Chart
| Size | USS | SAE | Inside Diameter (A) | Outside Diameter (B) | Thickness (C) |
|---|---|---|---|---|---|
| #2 | – | 3/32″ | – | 1/4″ | 0.020″ |
| #4 | – | 1/8″ | – | 5/16″ | 0.032″ |
| #6 | – | 5/32″ | – | 3/8″ | 0.049″ |
| #8 | – | 3/16″ | – | 7/16″ | 0.049″ |
| #10 | – | 7/32″ | – | 1/2″ | 0.049″ |
| #12 | 1/4″ | 5/16″ | 0.734″ | 0.065″ | – |
| 9/32″ | 5/8″ | – | 0.065″ | – | – |
| 5/16″ | 3/8″ | 7/8″ | 0.083″ | – | – |
| 11/32″ | 11/16″ | 0.065″ | – | – | – |
| 3/8″ | 7/16″ | 1″ | 0.083″ | – | – |
| 13/32″ | 13/16″ | 0.065″ | – | – | – |
| 7/16″ | 1/2″ | 1-1/4″ | 0.083″ | – | – |
| 15/32″ | 15/16″ | 0.065″ | – | – | – |
| 9/16″ | 5/8″ | 1-3/8″ | 0.109″ | – | – |
| 17/32″ | 1-1/16″ | 0.095″ | – | – | – |
| 5/8″ | 11/16″ | 1-15/32″ | 0.109″ | – | – |
| 19/32″ | 1-5/32″ | 0.095″ | – | – | – |
| 3/4″ | 13/16″ | 2″ | 0.148″ | – | – |
| 13/16″ | 1-15/32″ | 0.134″ | – | – | – |
| 7/8″ | 15/16″ | 2-1/4″ | 0.165″ | – | – |
| 1″ | 1-1/16″ | 2-1/2″ | 0.165″ | – | – |
| 1-1/8″ | 1-1/4″ | 2-3/4″ | 0.165″ | – | – |
| 1-1/4″ | 1-3/8″ | 3″ | 0.165″ | – | – |
| 1-3/8″ | 1-1/2″ | 3-1/4″ | 0.180″ | – | – |
| 1-1/2″ | 1-5/8″ | 3-1/2″ | 0.180″ | – | – |
| 1-3/4″ | 1-7/8″ | 4″ | 0.180″ | – | – |
| 2″ | 2-1/8″ | 4-1/2″ | 0.213″ | – | – |
Copper Spring Washer Dimensions
| Nom Size | Inner Dia (d) Basic (mm) | Tol (+) | Outer Dia (d1) Max (mm) | Width (b) Basic (mm) | Tol (+/-) (mm) | Thickness (S) Basic (mm) | Tol (+/-) (mm) | Weight per 1000 pcs (kg) |
|---|---|---|---|---|---|---|---|---|
| 3 | 3.1 | 0.3 | 6.2 | 1.3 | 0.1 | 0.8 | 0.1 | 0.11 |
| 4 | 4.1 | 0.3 | 7.6 | 1.5 | 0.1 | 0.9 | 0.1 | 0.18 |
| 5 | 5.1 | 0.3 | 9.2 | 1.8 | 0.1 | 1.2 | 0.1 | 0.36 |
| 6 | 6.1 | 0.4 | 11.8 | 2.5 | 0.15 | 1.6 | 0.1 | 0.83 |
| 8 | 8.1 | 0.4 | 14.8 | 3 | 0.15 | 2 | 0.1 | 1.60 |
| 10 | 10.2 | 0.5 | 18.1 | 3.5 | 0.2 | 2.2 | 0.15 | 2.53 |
| 12 | 12.2 | 0.5 | 21.1 | 4 | 0.2 | 2.5 | 0.15 | 3.82 |
| 14 | 14.2 | 0.5 | 24.1 | 4.5 | 0.2 | 3 | 0.15 | 6.01 |
| 16 | 16.2 | 0.8 | 27.4 | 5 | 0.2 | 3.5 | 0.2 | 8.91 |
| 18 | 18.2 | 0.8 | 29.4 | 5 | 0.2 | 3.5 | 0.2 | 9.73 |
| 20 | 20.2 | 1 | 33.6 | 6 | 0.2 | 4 | 0.2 | 15.20 |
| 22 | 22.5 | 1 | 35.9 | 6 | 0.2 | 4 | 0.2 | 16.50 |
| 24 | 24.5 | 1 | 40 | 7 | 0.25 | 5 | 0.2 | 26.20 |
| 27 | 27.5 | 1 | 43 | 7 | 0.25 | 5 | 0.2 | 28.70 |
| 30 | 30.5 | 1.2 | 48.2 | 8 | 0.25 | 6 | 0.2 | 44.30 |
| 33 | 33.5 | 1.2 | 55.2 | 10 | 0.25 | 6 | 0.2 | 63.00 |
| 36 | 36.5 | 1.2 | 58.2 | 10 | 0.25 | 6 | 0.2 | 67.30 |
| 39 | 39.5 | 1.2 | 61.2 | 10 | 0.25 | 6 | 0.2 | 71.70 |
| 42 | 42.5 | 1.2 | 68.2 | 12 | 0.25 | 7 | 0.25 | 111.00 |
| 45 | 45.5 | 1.2 | 71.2 | 12 | 0.25 | 7 | 0.25 | 117.00 |
| 48 | 49 | 1.5 | 75 | 12 | 0.25 | 7 | 0.25 | 123.00 |
| 52 | 53 | 1.5 | 83 | 14 | 0.25 | 8 | 0.25 | 320.00 |
Widest Stock of Copper Nickel Washers
| Copper Nickel Industrial Washers | Copper Nickel SAE Flat Washers |
| Copper Nickel Curved Disc Spring Washer | Copper Nickel Wave Washers |
| Cu-Ni Tooth Washer | Cu-Ni Hex Washer |
| Copper Nickel Tab Washer Supplier | Copper Nickel Bonded Sealing Washer |
| Copper Nickel Finishing Washers | Copper Nickel Dock Washer Stock |
| Cu-Ni Split Washer | Copper Nickel Hillside Washers |
| Copper Nickel Square Washer | Cu-Ni Fender Washer |
| Copper Nickel Spherical Washer | Cu-Ni Cup Washer |
Applications of Copper & Cupro Nickel Washers
Copper and Cupro Nickel Washers are widely used in industries where corrosion resistance, high conductivity, and durability are critical. Typical applications include:
- Marine and Offshore Industry: Seawater cooling systems, shipbuilding, offshore platforms.
- Chemical & Petrochemical Plants: Piping systems, heat exchangers, pressure vessels.
- Automotive & Heavy Engineering: Engine components, shafts, and machinery assemblies.
- Electrical & Electronics: Electrical connectors, terminals, and grounding systems.
- Industrial Equipment: Pneumatic chillers, cooling plants, pumps, valves, and strainers.
- Specialty Applications: Medical equipment, jewelry manufacturing, and high-temperature processing equipment.
People Ask About Duplex Steel Washer Manufacturer
What is Cupro Nickel used for?
Cupro Nickel washers are widely used in marine, chemical, petrochemical, and industrial applications. Their excellent corrosion resistance, thermal conductivity, and durability make them ideal for use in seawater, chemical solutions, and high-temperature environments.
What is the difference between Copper and Cupro Nickel washers?
Copper washers are highly conductive and corrosion-resistant, while Cupro Nickel washers (70/30 or 90/10) include nickel to provide higher strength, improved oxidation resistance, and better performance in seawater and harsh chemical conditions.
What grades of Cupro Nickel washers do you offer?
We offer Cupro Nickel 70/30 (C71500) and 90/10 (C70600) grades, both suitable for demanding industrial applications where high strength, corrosion resistance, and durability are required.
Can custom sizes be manufactured?
Yes, Unifit Fastener provides custom sizes, dimensions, and surface coatings for Cupro Nickel washers to meet specific client requirements.
Are the washers certified?
Yes, our Cupro Nickel washers are dual-certified according to ASTM and ASME standards. Test certificates include EN 10204 / 3.1, PED 97/23/EC, and Merkblatt AD 2000 W2, ensuring compliance with international quality standards.
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