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Brian Fasteners is a well-established name in Houston as a manufacturer and supplier of high–quality Copper Nickel 70/30 Washers. We provide industries throughout the USA with fasteners designed to function in the most extreme of environments. Due to their strength and corrosion properties, our 70/30 washers are produced through precision methods and endure strict quality control measures. We ship to shipyards, offshore drilling operators, and chemical processing plants that depend on our washers for leak-free, long-lasting fastening solutions. With outstanding thermal stability and strong resistance to stress cracking, our Copper Nickel 70/30 Washers provide reliable operation in hostile environments.
Our Copper Nickel 70/30 Washers consist of about 70% copper and 30% nickel, together with trace amounts of iron and manganese for added strength. These washers possess excellent resistance to corrosion in seawater, stress corrosion cracking, and erosion. They provide tensile strength between 360–420 MPa and yield strength of 150–190 MPa. Hardness is generally in the range of 100–120 HB. The thermal conductivity of the alloy (~35 W/m·K) and superior mechanical properties make these washers best suited for sealing and load transfer in high-pressure and corrosive 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 are widely employed in marine application, such as shipbuilding, offshore oil rigs, and undersea construction. These washers assist in evenly spreading loads and avoiding surface damage when utilized with bolts and nuts in corrosive environments. They are also utilized in heat exchangers, desalination plants, water pipes, and naval defense systems. They have non-magnetic, non-sparking characteristics that are well-suited for utilization in petrochemical plants and explosive environments. Whether on seawater cooling systems or high-saline conditions, these washers ensure a secure, long-lasting seal and extended performance under mechanical and thermal load.
Our Copper Nickel 70/30 washers at Brian 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.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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