Neil Metals, located in Kolkata, India, has built a solid reputation as a manufacturer and supplier of top-notch Alloy 20 Forgings, crafted to handle the tough demands of chemical and industrial processing environments. This alloy is particularly renowned for its outstanding resistance to corrosion, especially when it comes to sulfuric acid applications. Alloy 20 is a nickel-iron-chromium blend that’s perfect for high-performance forgings. At Neil Metals, you can expect precision-engineered products that meet international standards, guaranteeing durability, strength, and resistance to harsh chemicals. They cater to various sectors, including chemical, pharmaceutical, food processing, and marine industries, and are known for their reliable delivery, customization options, and consistent quality in Alloy 20 forged components.
Alloy 20 Forgings consist of about 32–38% nickel, 19–21% chromium, 2–3% molybdenum, 3–4% copper, and a balanced amount of iron, with a touch of niobium for stabilization. These forgings are celebrated for their excellent corrosion resistance, particularly against sulfuric acid, and they stand strong against pitting, crevice corrosion, and stress corrosion cracking. In terms of mechanical properties, they boast a tensile strength of around 620 MPa, a yield strength of about 300 MPa, along with good elongation and toughness. Alloy 20 keeps its mechanical integrity even at moderate temperatures, making it suitable for both welded and forged applications in corrosive settings.
| 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 their place in industries that demand superior corrosion resistance and mechanical strength. In the chemical and petrochemical fields, they’re used in reactors, heat exchangers, pumps, and valves that come into contact with sulfuric acid and other aggressive substances. The pharmaceutical and food processing sectors rely on Alloy 20 for hygienic and corrosion-resistant equipment. Marine and offshore applications benefit from its resilience in saltwater and acidic conditions. Additionally, it’s utilized in pulp and paper production and power plants for components that need to withstand chemical attacks and high temperatures while maintaining their integrity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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