Rupal Metals stands out as a top-notch manufacturer and supplier of high-quality Alloy 20 Forgings, based in Delhi, India. This alloy is renowned for its remarkable resistance to corrosion, particularly in sulfuric acid environments, making it a go-to choice for the chemical and pharmaceutical processing sectors. We specialize in precision-forged components, including bars, rings, discs, and custom shapes, all crafted to meet international standards and your specific needs. With a commitment to quality, reliability, and speedy delivery, we cater to vital industries such as petrochemicals, food processing, and marine. Our Alloy 20 forgings are celebrated for their durability, versatility, and outstanding performance in corrosive conditions.
Alloy 20 (UNS N08020) is primarily made up of 35% nickel, 20–21% chromium, 3–4% copper, 2–3% molybdenum, with iron making up the balance, and a touch of niobium for stabilization. This unique blend gives it excellent resistance to sulfuric acid, as well as protection against chloride stress corrosion cracking and pitting. In terms of mechanical properties, it boasts a tensile strength of 620–690 MPa, a yield strength of around 300–380 MPa, and an elongation of 30–35%, depending on the condition. Alloy 20 strikes a perfect balance between high strength and good fabricability and weldability, making it a preferred option for critical applications in harsh chemical environments, especially where standard stainless steels might not hold up.
| 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 various industries where exceptional resistance to acidic and corrosive media is crucial. You’ll often see them in sulfuric acid processing, pharmaceutical manufacturing, food and beverage equipment, heat exchangers, chemical reactors, and storage tanks. Its ability to resist chloride-induced stress corrosion makes it perfect for marine hardware and offshore equipment. Additionally, Alloy 20 is utilized in pulp and paper mills, plastic processing, and dye production. Rupal Metals provides forged bars, rings, and more, ensuring you get the best quality for your needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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