Special alloys represent a class of materials engineered to possess unique and tailored properties beyond those of traditional metals like steel or aluminum. These alloys are meticulously crafted by combining base metals with specific alloying elements to achieve desired characteristics such as enhanced strength, corrosion resistance, conductivity, or magnetic properties. They find applications in a wide array of industries, ranging from aerospace and automotive to electronics, healthcare, and beyond. The versatility of special alloys stems from their ability to be customized to meet the exacting demands of diverse applications.
One of the defining features of special alloys is their ability to perform reliably under extreme conditions. Whether subjected to high temperatures, aggressive chemicals, or intense mechanical stress, these alloys maintain their integrity and functionality, making them indispensable in critical environments such as oil and gas exploration, chemical processing, and power generation. Furthermore, special alloys often exhibit unique properties that set them apart from conventional materials.
| Material type | Ni | Cr | Co | Mo | W | Fe | Al | Ti | Cu | Nb | Other |
| GMR 235 | 63.00 | 15.50 | 3.20 | 10.00 | 3.70 | 2.00 | 0.06% B | ||||
| Nimonic 75 | 77.00 | 20.00 | 5.0* | 0.15 | 0.40 | ||||||
| Nimonic 80 | 74.00 | 20.00 | 2.0* | 1.5* | 1.30 | 2.20 | |||||
| Nimonic 81 | 65.00 | 30.00 | 1.0* | 1.00 | 1.75 | ||||||
| Nimonic 90 | 57.00 | 20.00 | 16.00 | 5.0* | 1.50 | 2.50 | |||||
| Nimonic 91 | 47.50 | 28.50 | 20.00 | 1.20 | 2.30 | ||||||
| Nimonic 105 | 53.00 | 15.00 | 20.00 | 5.00 | 1.0* | 4.70 | 1.20 | ||||
| Nimonic 115 | 57.00 | 15.00 | 15.00 | 3.50 | 1.0* | 5.00 | 4.00 | ||||
| Nimonic C263 | 50.00 | 20.00 | 20.00 | 5.90 | 0.75* | 0.50 | 2.20 | ||||
| Nimonic C1023 | 56.00 | 15.50 | 9.50 | 8.00 | 0.25 | 4.30 | 3.60 | ||||
| GTD 111 | 59.00 | 14.00 | 9.50 | 1.50 | 3.80 | 0.5* | 3.00 | 4.90 | 2.8% Ta/ 0.02*% B | ||
| GTD 222 | 50.00 | 22.50 | 19.00 | 2.00 | 0.25* | 1.20 | 2.30 | 0.80 | 1.0% Ta | ||
| Rene 41 | 52.00 | 19.00 | 11.00 | 10.00 | 5.0* | 1.60 | 3.20 | ||||
| Rene 77 (Udimet 700) | 52.00 | 15.00 | 15.00 | 4.00 | 0.5* | 4.20 | 3.50 | 0.02*% B | |||
| Rene 80 | 60.00 | 14.00 | 9.50 | 4.00 | 4.00 | 3.00 | 5.00 | ||||
| Rene 88 | 55.00 | 16.00 | 13.00 | 4.00 | 4.00 | 0.25 | 2.10 | 3.75 | 0.70 | 0.02% B | |
| Rene 125 | 59.00 | 9.00 | 10.00 | 2.00 | 4.80 | 2.60 | 3.8% Ta/ 1.6% Hf / 7% W | ||||
| Waspalloy | 56.00 | 19.00 | 14.00 | 4.20 | 1.5* | 1.40 | 3.00 | 0.1% Zr | |||
| Udimet 500 | 53.00 | 17.50 | 16.50 | 4.00 | 4.00 | 2.90 | 3.90 | 0.01 B | |||
| Udimet 520 | 56.00 | 19.00 | 12.00 | 6.00 | 1.00 | 1.00 | 2.00 | 3.00 | |||
| Udimet 600 | 52.00 | 17.50 | 16.50 | 4.00 | 4.0* | 4.20 | 2.90 | 0.04*% B | |||
| Mar M 246 | 600.00 | 9.00 | 10.00 | 2.50 | 10.00 | 0.15 | 5.50 | 1.50 | 1.5% Ta | ||
| PWA 663 (B1900) | 64.00 | 8.00 | 10.00 | 6.00 | 6.00 | 1.00 | 1% Zr/ 4% Ta | ||||
| Mar M 200 | 60.00 | 9.00 | 10.00 | 12.00 | 5.00 | 2.00 | 1.00 | 0.12% B | |||
| Mar M 002 | 59.00 | 10.00 | 10.00 | 10.00 | 1.0* | 5.00 | 1.50 | 2.5% Ta / 1.5% Hf | |||
| Mar M 247 | 58.00 | 8.50 | 10.00 | 0.60 | 10.00 | 0.5* | 5.50 | 1.00 | 3% Ta | ||
| Alloy 230 | 57.5 | 22.00 | 2.00 | 14.00 | 3 | 0.30 | 0.1% C/0.5% Mn/0.4% Si | ||||
| Kovar | 29 | 17 | 54 | ||||||||
| N155 (Multimet) | 20 | 21 | 20 | 3 | 2.5 | 30.35 | 0.5% C/ Ta 1%/ Si 0.5% |
