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Mazin Fasteners is a reliable manufacturer and supplier of Copper Nickel 70/30 Washers, proudly based in Muscat, Oman. We specialize in providing top-notch fastening solutions tailored for marine, chemical, and industrial applications. Our washers are crafted with precision to ensure they deliver outstanding corrosion resistance, durability, and reliability, especially in tough environments like seawater and brackish water. At Mazin Fasteners, we produce our Copper Nickel 70/30 washers in line with international standards, utilizing advanced manufacturing techniques and rigorous quality control measures. With a strong commitment to quality, timely delivery, and customer satisfaction, we cater to various industries across Oman and the Middle East, offering dependable, long-lasting, and efficient fastening solutions.
Our Copper Nickel 70/30 washers are made from an alloy that consists of about 70% copper and 30% nickel, with small amounts of iron and manganese added to boost strength and corrosion resistance. This unique composition gives them excellent protection against seawater corrosion, biofouling, and stress corrosion cracking. These washers also showcase impressive tensile and yield strength, along with high ductility and toughness. Their mechanical stability and resistance to corrosion make them perfect for demanding marine and industrial applications where reliability and a long service life are essential.
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.
You’ll find Copper Nickel 70/30 washers being used in various applications that face exposure to seawater, brackish water, and chemically aggressive environments. They’re commonly found in shipbuilding, offshore platforms, desalination plants, power generation, and marine engineering sectors. Typical uses include flanged joints, piping systems, pumps, valves, and heat exchangers. Thanks to their exceptional corrosion resistance, mechanical strength, and durability, these washers ensure a long service life, operational safety, and minimal maintenance in critical marine and industrial settings.
Our Copper Nickel 70/30 washers at Mazin 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.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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