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Themban Nickel Alloys Manufacturer and Supplier in Cape Town , Cape Town, offers premium Copper-Nickel 70/30 Nuts, renowned for their exceptional corrosion resistance and durability. Made from a high-quality 70/30 copper-nickel alloy, these nuts are ideal for marine, chemical, and high-temperature applications. Their superior resistance to seawater corrosion and ease of installation make them a preferred choice for demanding environments. We ensure the highest standards of quality, providing reliable and long-lasting fasteners for various industrial needs.
At Themba Nickel Alloys, we take pride in being a well-respected manufacturer and supplier based in Cape Town, South Africa. We’re excited to announce our position as a leading Duplex Steel Bolts Manufacturer in the South Africa. Our dedication to upholding international quality standards means that we provide high-performance fasteners designed to meet the tough demands of various industries throughout the South Africa. Our Duplex Steel Bolts are crafted for exceptional strength, corrosion resistance, and long-lasting durability, even in the harshest environments. We serve clients in Cape Town, Johannesburg, Durban, and beyond, ensuring timely delivery, competitive pricing, and personalized technical support tailored to each customer’s project needs.
| Specifications | : | ASTM B 151 ASME SB 151 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 70/30 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Cu-Ni 70/30 | Cu | Pb | Mn | Fe | Zn | Ni |
| 88.6 min | 0.05 max | 1.0 max | 1.8 max | 1 max | 9-11 max |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35,000, MPa – 241 | Psi -80,000, MPa -551 | 30 % |
As a premier Duplex Steel Bolts Manufacturer in the Cape Town, we produce bolts with a carefully balanced chemical composition, typically featuring 22–23% Chromium, 4.5–6.5% Nickel, 3–3.5% Molybdenum, and minimal carbon content. These bolts boast impressive mechanical properties, including high tensile strength (620–880 MPa), yield strength (~450 MPa), and outstanding hardness and elongation. The unique microstructure of duplex stainless steel, which combines austenitic and ferritic phases, provides enhanced corrosion resistance, stress corrosion cracking resistance, and toughness, making them perfect for critical and high-pressure applications across various industrial sectors.
Contact us to get a quick quote for your requirement.
The Duplex Steel Bolts we manufacture at Themba Nickel Alloys are widely utilized in numerous industries throughout the Cape Town, such as oil and gas, marine, petrochemical, offshore drilling, and desalination plants. Their remarkable strength and resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking make them ideal for demanding environments. These bolts are commonly found in flanged joints, pressure vessels, structural assemblies, and subsea equipment, where safety and performance are paramount. In construction and infrastructure projects, they guarantee long-term durability in coastal or chemically aggressive settings, establishing Themba Nickel Alloys as a trusted partner for high-performance fastening solutions.
