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Specifications ASTM B366 / ASME SB366
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, MSS SP-79
Size 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type Seamless / Welded / Fabricated
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Grade 20 UNS (N08020), DIN (2.4660)
Machuca Fittings, located in Kuala Lumpur, Malaysia, stands out as a top manufacturer and supplier of high-quality piping solutions, particularly known for their Alloy 20 Pipe Fittings. The company has built a solid reputation for its dedication to quality, precision engineering, and ensuring customer satisfaction. By offering corrosion-resistant and high-performance products, Machuca Fittings plays a vital role in supporting industries that need durable and reliable components for tough environments. Their Alloy 20 Pipe Fittings are crafted to meet international standards, providing resistance to chemicals, high temperatures, and harsh operating conditions. With a strong emphasis on innovation, technical know-how, and prompt delivery, Machuca Fittings has become a trusted ally for engineering and industrial applications.
| Grade | Ni | C | Mn | P | S | Si | Cr | Nb | Mo | Cu |
| Alloy 20 | 32 – 38 | 0.02 max | 1 – 2 | 0.02 max | 0.005 max | 0.7 max | 19 – 21 | 0.1 – 0.3 | 2 – 3 | 3 – 4 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Alloy 20 | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi – 35,000, MPa – 241 | 30 % |
Alloy 20 Pipe Fittings are primarily made up of nickel (32–38%), chromium (19–21%), and iron as the main component, with copper (3–4%) and molybdenum (2–3%) included to boost corrosion resistance. This unique alloy composition offers exceptional protection against sulfuric acid, chloride, and other aggressive substances. The fittings are known for their impressive tensile strength, toughness, and ductility, making them perfect for high-stress environments. They also show remarkable resistance to pitting, intergranular corrosion, and stress corrosion cracking. These mechanical properties ensure that Alloy 20 fittings maintain their structural integrity and reliable performance even in demanding industrial settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WNR. | AFNOR | EN |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo |
Alloy 20 Pipe Fittings from Machuca Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Alloy 20 pipe fittings offer several key advantages, including exceptional resistance to corrosion, particularly in acidic environments like sulfuric acid. Their high nickel content enhances resistance to chloride stress corrosion cracking, while the chromium and molybdenum provide excellent protection against pitting and crevice corrosion. These fittings maintain strength and durability even at high temperatures. Alloy 20 also exhibits good weldability and formability, making it versatile for various industrial applications, such as chemical processing, pharmaceuticals, and food production. Its long-term reliability and resistance to degradation reduce maintenance costs.
Yes, custom sizes for Alloy 20 Pipe Fittings are available at Machuca Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@machucafittings.com.
Alloy 20 Pipe Fittings find their place in various industries where chemical resistance and mechanical strength are crucial. They are frequently used in chemical processing plants, pharmaceutical facilities, desalination units, and pollution control systems. These fittings excel at handling corrosive fluids like sulfuric acid and nitric acid, as well as in heat exchangers, storage tanks, and pressure vessels. Their ability to resist crevice corrosion and stress corrosion cracking makes them a great choice for offshore platforms and marine environments. The long service life and safety these fittings provide are essential for maintaining operational efficiency.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.








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