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Mira Fasteners is a reliable manufacturer and supplier of Copper Nickel 70/30 Washers in Kuala Lumpur, Malaysia. Our washers are made from Cu-Ni 70/30 (UNS C71500) and provide superior seawater corrosion resistance, biofouling resistance, and high-temperature oxidation resistance. Our washers find perfect application in marine and offshore environments where strength and corrosion resistance are the main priorities. We provide flat washers, spring washers, and lock washers in nominal and custom sizes, following ASTM and DIN standards. Mira Fasteners has high accuracy, consistent thickness, and enduring performance in even the most severe saltwater and industrial conditions.
Copper Nickel 70/30 Washers consist of 70% copper, 30% nickel, and traces of iron and manganese. This alloy offers enhanced mechanical strength (tensile strength: 480–500 MPa), high corrosion resistance in seawater, and high thermal stability. The washers function well at temperatures of up to 400°C, withstanding stress and crevice corrosion. Mira Fasteners produces washers with close tolerances and uniform hardness for structural and sealing performance in harsh marine environments.
Grade | Cu | Mn | Pb | Ni | Fe | Zn |
Cupro Nickel 70/30 | 88.6 min | 1.0 max | 0.05 max | 9-11 max | 1.8 max | 1 max |
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
Cupro Nickel 70/30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| Specifications | 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 | 1/2” to 12″ |
| Standards | ASTM, ASME Washer, ANSI Washer, DIN Washer, EN Washer, BS Washer etc |
| Grade | Copper & Copper Nickel Nickel 70/30 (C71500) |
| Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Copper Nickel 70/30 Washers have widespread applications in desalination plants, marine pipelines, offshore platforms, heat exchangers, and naval shipbuilding. Their seawater erosion and biofouling resistance makes them perfect for splash-zone and submerged installations. These washers are also applicable in thermal power plants and oil refinery systems subject to chlorinated water and high velocity flow. Mira Fasteners provides Cu-Ni 70/30 washers with outstanding strength, conductivity, and protection against corrosion for applications in critical fastener assemblies of ships and industrial machinery.
Our Copper Nickel 70/30 washers at Mira Fasteners are carefully packed to ensure that they do not lose their quality. These washers are protected and packed separately in hard containers to avoid any harm and contamination from moisture. Proper labeling makes it easier to locate and manage the items for the best results. The packaging process is very accurate to ensure that the washers reach their destination in perfect condition and are usable as soon as they get to the client, which is a clear indication of our dedication to providing high-quality products and excellent services to our clients.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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