Haynes 282 alloy, wrought gammaprime strengthened superalloy, is a candidate for components used in land-based turbines used in power generation. |
These materials let land-based turbines run hotter and, thus, generate electricity more efficiently. Hotter combustion also helps keep ozone-depleting emissions in check.
Haynes International Inc., Kokomo, Ind., for example, has developed an advanced, wrought gammaprime strengthened superalloy called Haynes 282. It stands up well to strain-age cracking, a problem common to many gamma-prime strengthened alloys. The 58Ni-19Cr-10Co-8.5Mo-1.5Al-2.1Ti alloy is also a candidate for aircraft manufacturing and other high-performance, high-temperature environments. Reports indicate the alloy is stronger in creep strength than N07001 (Waspaloy) and approaches the creep strength of N07041 (Haynes R-41) at temperatures as high as 1,650°F (900°C). Further, the 282 alloy is easier to weld and fabricate compared to Waspaloy and R-41 alloys.
| PHYSICAL PROPERTY COMPARISON | ||||
| Property | Temperature, °F | Haynes 282* | Waspaloy (N07001) | Haynes R-41 (N07041) |
| Density, gm/cm3 | Room | 8.27 | 8.2 | 8.25 |
| Thermal conductivity, Btu-in./ft2-hr-°F | 800 | 132 | 112 | 116 |
1,200 | 164 | 139 | 144 | |
1,600 | 187 | 167 | 173 | |
| Mean coefficient of thermal expansion, μin./in.-°F | ||||
70 to 800 | 7.3 | 7.6 | 7.4 | |
70 to 1,200 | 7.5 | 8.1 | 8.0 | |
70 to 1,600 | 8.7 | 8.9 | 8.6 | |
70 to 1,800 | 9.3 | 9.7 | 9.3 | |
| *Preliminary data | ||||
MAKE CONTACT
Haynes International Inc., (765) 456-6012, haynesintl.com
