Starc Metals is a reputable manufacturer and supplier located in Canberra, Australia, with a focus on high-quality Alloy 20 forgings. Known for their precision engineering and dedication to excellence, Starc Metals provides strong and corrosion-resistant forged components that cater to the rigorous demands of the chemical, petrochemical, and marine sectors. With an emphasis on quality assurance, timely delivery, and customer satisfaction, the company offers both standard and custom-forged solutions. Their Alloy 20 forgings are specifically designed to thrive in highly corrosive environments, making them a dependable choice for clients throughout Australia and in international markets.
Alloy 20, often referred to as Carpenter 20, is a nickel-iron-chromium austenitic alloy that also includes copper and molybdenum. Its typical makeup consists of 32–38% nickel, 19–21% chromium, 2–3% molybdenum, and 3–4% copper. This unique combination provides outstanding resistance to sulfuric acid and chloride stress corrosion cracking. In terms of mechanical properties, Alloy 20 forgings boast a tensile strength of around 80 ksi (550 MPa), a yield strength of 35 ksi (240 MPa), and an elongation of about 30%. These characteristics make Alloy 20 perfect for applications that require both strength and exceptional corrosion resistance.
| 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.
Starc Metals’ Alloy 20 forgings are extensively utilized in industries where superior corrosion resistance is essential. Common uses include heat exchangers, chemical processing equipment, pharmaceutical production systems, food and beverage processing, and marine components. The alloy’s resistance to sulfuric acid is particularly beneficial in acid processing plants. Moreover, its ability to resist chloride-induced stress corrosion cracking makes it ideal for saltwater and chemical environments. Starc Metals’ Alloy 20 forgings are crafted with precision to ensure reliability, durability, and performance in the most challenging operating conditions, supporting a variety of industrial systems in Australia and beyond.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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