Brian Fasteners manufactures and supplies high-quality Alloy 20 Forgings in Houston, USA. Fitted for chemical and petrochemical corrosion resistance, Alloy 20 is a high-end material for demanding applications. Our forgings are precision-machined and quality-inspected to ASTM and ASME standards. We produce a variety of shapes and sizes, suited to the pharmaceutical, food processing, and marine industries. At Brian Fasteners, we pair metallurgical savvy with state-of-the-art manufacturing to provide forgings that provide long-term strength and chemical resistance.
Alloy 20 is a nickel-chromium-iron alloy with addition of copper and molybdenum. It may contain 32–38% nickel, 19–21% chromium, 2–3% molybdenum, and 3–4% copper. The composition gives excellent resistance against sulfuric acid and chloride-induced corrosion. Its tensile strength is 551–760 MPa, yield strength approximately 241–414 MPa, and elongation is 30–40%. Alloy 20 also gives very good resistance against pitting and stress corrosion cracking. It can be hot worked and cold formed and so is a very versatile forging material for forged components.
| Specifications | ASTM B462, ASME SB462 |
|---|---|
| Standard | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
| Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.00 – 4.00 | 32.00 – 38.00 | 19.00 – 21.00 | 29.85 min* | 2.00 – 3.00 | 0.045 max |
| 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 % |
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR |
| Alloy 20 | 2.4660 | N08020 | NiCr20CuMo | Z2NCUD31-20AZ |
Yes, Alloy 20 forgings are highly resistant to corrosion, particularly against sulfuric acid, making them ideal for chemical processing environments. Their excellent resistance ensures durability and longevity in harsh conditions.
The maximum operating temperature for Alloy 20 forgings is typically around 1000°F (537°C). However, it is important to consider application conditions and potential stress factors to ensure optimal performance.
Yes, Alloy 20 forgings can be customized for specific applications. They are tailored to meet unique requirements, offering excellent corrosion resistance, durability, and strength for various industrial uses.
Alloy 20 Forgings find extensive application in chemical processing, particularly where chlorides and sulfuric acid are present. Uses extend to heat exchangers, pump and valve components, reactor vessels, flanges, and fasteners. Alloy 20 Forgings also find use in pharmaceutical production, marine environments, and food processing equipment on account of its corrosion and contamination resistance properties. Its mechanical stability in hostile environments renders it ideal for pressure-retaining parts. Alloy 20 is an economical substitute for more expensive nickel alloys, providing performance as well as economy in corrosive service conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
Copyright 2024 George Metals. All rights reserved
