HAYNES® 718 alloy Site
Principal Features
Creep and Stress-Rupture Strengths
Tensile Properties
Modulus of Elasticity
Physical Properties
Fabrication and Welding
Health and Safety
HAYNES® 718 alloy
Technical Briefs
HAYNES® 718 alloy
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Creep and Stress-Rupture Strengths |
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| Cold-Rolled, Solution-Treated and Aged* (Sheet) |
Test
Temperature |
Creep, Percent |
Approximate Initial Stress, Ksi (MPa)
to Produce Specified Creep in |
°F |
°C |
10 Hours |
100 Hours |
1,000 Hours |
|
1000 |
540 |
0.5 |
157 |
(1080) |
146 |
(1005) |
132 |
(910) |
|
|
1.0 |
160 |
(1105) |
150 |
(1035) |
138 |
(950) |
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|
Rupture |
- |
- |
165 |
(1140) |
144 |
(995) |
|
1100 |
595 |
0.5 |
140 |
(965) |
126 |
(870) |
108 |
(745) |
|
|
1.0 |
143 |
(985) |
130 |
(895) |
112 |
(770) |
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|
Rupture |
150 |
(1035) |
134 |
(925) |
115 |
(795) |
|
1200 |
650 |
0.5 |
121 |
(835) |
101 |
(695) |
75 |
(515) |
|
|
1.0 |
124 |
(855) |
103 |
(710) |
78 |
(540) |
|
|
Rupture |
130 |
(895) |
105 |
(725) |
87 |
(600) |
|
1300 |
705 |
0.5 |
95 |
(655) |
64 |
(440) |
25 |
(175) |
|
|
1.0 |
98 |
(675) |
66 |
(455) |
33 |
(230) |
|
|
Rupture |
102 |
(705) |
76 |
(525) |
43 |
(295) |
|
1400 |
760 |
0.5 |
58 |
(400) |
22 |
(150) |
- |
- |
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|
1.0 |
60 |
(415) |
26 |
(180) |
- |
- |
|
|
Rupture |
70 |
(485) |
36 |
(250) |
14 |
(97) |
*Limited data |
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Comparison of Stress to Produce 1% Creep in 1000 Hours (Sheet) |
HAYNES® 718 alloy has stress-rupture strength up to 1200°F (650°C) which is superior to most other age-hardenable, wrought nickel-base superalloys. At temperatures above 1200°F (650°C), materials such as HAYNES® Waspaloy alloy and HAYNES® R-41 alloy provide higher strength.
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