Haynes 282 alloy, wrought gammaprime strengthened superalloy, is a candidate for components used in land-based turbines used in power generation.

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