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Themba Nickel Alloys, a prominent manufacturer and supplier located in Cape Town, Cape Town, specializes in top-notch Duplex Steel Coils designed for outstanding strength, corrosion resistance, and durability in tough industrial settings. Crafted with precision and a commitment to international standards, these coils blend the advantages of ferritic and austenitic stainless steels, delivering exceptional mechanical performance and resistance to chloride-induced corrosion and stress corrosion cracking. Widely utilized in chemical processing, petrochemical, marine, and offshore industries, Themba Nickel Alloys’ Duplex Steel Coils ensure reliable, long-lasting performance even in harsh chemical environments, high pressure, and elevated temperatures.
Duplex Steel Coils are made up of iron, chromium, nickel, and molybdenum, with small amounts of nitrogen added to boost strength and corrosion resistance. This alloy showcases a tensile strength ranging from 690 to 850 MPa, a yield strength of 450 to 550 MPa, and an elongation of 20 to 25%. Thanks to its duplex microstructure, it offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, all while maintaining mechanical stability at high temperatures. These coils are also known for their superior formability, weldability, and dimensional stability, making them perfect for critical components in aggressive industrial environments.
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Standard |
ASTM A240 / ASME SA240 |
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Thickness |
0.2mm – 5.0mm |
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Width |
3.2mm – 1500mm |
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Length |
AS PER CUSTOMER’S REQUIREMENT |
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Test Certificate |
Yes |
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Coils Hardness |
Half Hard, Quarter Hard, Soft, Hard, Spring Hard |
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Finish |
Hot rolled Coils (HR), Cold rolled Coils (CR), NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
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Form |
Coil / Strip |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel Coils | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| Duplex Steel Coils | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
At Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Coils in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel Coils find extensive applications in chemical processing, oil and gas, petrochemical, marine, and offshore industries. They are particularly well-suited for creating piping systems, pressure vessels, heat exchangers, tanks, and structural components that face chloride-rich or corrosive conditions. In marine and offshore settings, these coils effectively resist seawater corrosion and uphold mechanical integrity under high pressure and temperature. Their unique combination of strength, corrosion resistance, and durability makes Duplex Steel Coils an excellent choice for demanding applications.
