HAYNES® 718 Sheet, Age-Hardened*
Temperature |
Creep |
Approximate Initial Stress to Produce Specified Creep in |
10h |
100h |
1,000h |
°F |
°C |
% |
ksi |
MPa |
ksi |
MPa |
ksi |
MPa |
1000 |
538 |
0.5 |
157 |
1083 |
146 |
1007 |
132 |
910 |
1 |
160 |
1103 |
150 |
1034 |
138 |
952 |
R |
-- |
-- |
165 |
1138 |
144 |
993 |
1100 |
593 |
0.5 |
140 |
965 |
126 |
869 |
108 |
745 |
1 |
143 |
986 |
130 |
896 |
112 |
772 |
R |
150 |
1034 |
134 |
924 |
115 |
793 |
1200 |
649 |
0.5 |
121 |
834 |
101 |
696 |
75 |
517 |
1 |
124 |
855 |
103 |
710 |
78 |
538 |
R |
130 |
896 |
105 |
724 |
87 |
600 |
1300 |
704 |
0.5 |
95 |
655 |
64 |
441 |
35 |
241 |
1 |
98 |
676 |
67 |
462 |
41 |
283 |
R |
106 |
731 |
76 |
524 |
46 |
317 |
1400 |
760 |
0.5 |
54 |
372 |
24 |
165 |
3.8 |
26 |
1 |
60 |
414 |
28 |
193 |
5.1 |
35 |
R |
70 |
483 |
37 |
255 |
17 |
117 |
*Samples were age hardened by treating at 1325°F (718°C)/8h/FC to 1150°F (621°C)/8h/AC
Comparison of Stress to Produce 1% Creep in 1000 Hours in Sheet
At temperatures below 1200°F (649°C), HAYNES® 718 alloy has creep strength that is superior to most other age-hardenable, wrought nickel-base superalloys. However, starting at temperatures around 1200°F (649°C) and higher,
gamma-prime strengthened alloys such as HAYNES® 282® alloy, HAYNES® Waspaloy alloy, and HAYNES® 263 alloy provide higher strength.