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Punit Fasteners, located in Delhi, India, has built a solid reputation as a reliable manufacturer and supplier of Copper Nickel 70/30 Washers. These washers are celebrated for their precision, durability, and impressive resistance to corrosion. Crafted from high-quality Cu-Ni 70/30 alloy, they meet international standards like ASTM B151. Punit Fasteners caters to a diverse array of industries, including marine, offshore, chemical processing, and power generation, providing tailored solutions for challenging environments. With state-of-the-art manufacturing facilities and rigorous quality control, the company is dedicated to delivering high-performance washer solutions that fulfill both functional and structural needs in critical industrial applications.
Copper Nickel 70/30 Washers consist of about 70% copper and 30% nickel, with small amounts of iron and manganese added to boost strength and corrosion resistance. This alloy boasts remarkable mechanical properties, featuring a tensile strength of up to 500 MPa and a yield strength around 200 MPa. The washers are highly ductile, typically showing elongation between 30–45%, and have a modulus of elasticity close to 140 GPa. Their outstanding resistance to seawater corrosion, stress cracking, and high thermal stability makes them perfect for high-pressure and high-temperature applications in tough 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.
These Copper Nickel 70/30 Washers are extensively utilized in scenarios that demand exceptional resistance to saltwater, chemicals, and elevated temperatures. They shine in marine industries, such as shipbuilding, offshore oil rigs, desalination systems, and seawater piping, where corrosion is a constant concern. In power plants and petrochemical facilities, these washers are essential for flanged joints, pumps, valves, and heat exchangers, ensuring leak-proof sealing. Their non-magnetic and anti-sparking properties also make them ideal for sensitive electrical and electronic equipment. With their high strength and thermal stability, they consistently perform well in dynamic and high-pressure situations.
Our Copper Nickel 70/30 washers at Punit 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.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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