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Creep and Stress-Rupture Strength

HAYNES® 282® alloy possesses exceptional creep strength in the temperature range 1200-1700°F (649-927°C). For example, it has superior strength to 263 alloy at all temperatures in this range in terms of both 1% creep and rupture. Despite the exceptional fabricability of 282® alloy, it compares well to less fabricable alloys developed for high creep strength. For example, its rupture strength is equivalent to the well-known, but less fabricable, Waspaloy alloy at the lower temperatures in this range and actually has a distinct advantage at the higher end of the temperature range. In terms of 1% creep strength, 282® alloy is superior to Waspaloy alloy across the entire temperature range. At temperatures of 1500-1700°F (816-927°C), 282® alloy has creep strength equivalent to even that of R-41 alloy, an alloy developed for excellent creep strength, but notorious for poor fabricability.

1% Creep Strength of Various Superalloys
in the Temperature Range 1500-1700°F (816-927°C)
(Sheet Products)

282 - creep strength

Comparative Creep-Rupture Properties of Gamma-Prime Strengthened Alloys* (Sheet)

Property Test Temperature 263 R-41 Waspaloy 282®
Stress-to-Produce 1%
Creep in 100 h ksi (MPa)		 °F °C ksi MPa ksi MPa ksi MPa ksi MPa
1200 649 75 517 105 724 81 558 - -
1300 704 54 372 75 517 63 434 72 496
1400 760 37 255 53 365 41 283 48 331
1500 816 22 152 32 221 25 172 32 221
1600 871 11 76 17 117 15 103 18 124
1700 927 6 41 8 55 6 41 9 62
Stress-to-Produce 1%
Creep in 1000 h ksi (MPa)		 1200 649 58 400 84 579 67 462 79 545
1300 704 41 283 59 407 46 317 53 365
1400 760 25 172 34 234 28 193 35 241
1500 816 12 83 18 124 16 110 21 145
1600 871 6 41 9 62 7 48 10 69
1700 927 3 21 5 34 3 21 5 34
Stress-to-Produce
Rupture in 100 h ksi (MPa)		 1200 649 77 531 110 758 92 634 - -
1300 704 60 414 85 586 75 517 75 517
1400 760 42 290 63 434 53 365 56 386
1500 816 25 172 39 269 32 221 37 255
1600 871 14 97 23 159 19 131 22 152
1700 927 7 48 13 90 10 69 12 83
Stress-to-Produce
Rupture in 1000 h ksi (MPa)		 1200 649 64 441 90 621 80 552 80 552
1300 704 45 310 68 469 58 400 56 386
1400 760 28 193 43 296 36 248 38 262
1500 816 15 103 24 165 20 138 23 159
1600 871 7 48 13 90 7 48 12 83
1700 927 4 28 7 48 3 21 6 41

*Age-hardened (263 alloy: 1472°F (800°C)/8h/AC, Waspaloy alloy : 1825°F (996°C)/2h/AC + 1550°F (843°C)/4h/AC + 1400°F
(760°C)/16h/AC, R-41 alloy: 1650°F (899°C)/4h/AC, 282® alloy: 1850°F (1010°C)/2h/AC + 1450°F (788°C)/8h/AC)

Solution Annealed* + Age Hardened** 282® Sheet

Test Temperature Creep Approximate Initial Stress to Produce Specified Creep in:
100 h 1,000 h
°F °C % ksi MPa ksi MPa
1200 649 0.5 - - 78 538
1 - - 79 545
Rupture - - 80 552
1300 704 0.5 70 483 51 352
1 72 496 53 365
Rupture 75 517 56 386
1400 760 0.5 46 317 33 228
1 48 331 35 241
Rupture 56 386 38 262
1500 816 0.5 30 207 18 124
1 32 221 21 145
Rupture 37 225 23 159
1600 871 0.5 17 117 9.0 62
1 18 124 10 69
Rupture 22 152 12 83
1700 927 0.5 8.3 57 4.2 29
1 9.0 62 5.0 34
Rupture 12 83 6.0 41
1800 982 0.5 3.6 25 - -
1 4.2 29 1.8 12
Rupture 5.5 38 2.5 17

*2100°F (1149°C)
**1850°F (1010°C)/2h/AC + 1450°F (788°C)/8h/AC

Solution Annealed* + Age Hardened** 282® Plate

Test Temperature Creep Approximate Initial Stress to Produce Specified Creep in:
100 h 1,000 h 10,000 h
°F °C % ksi MPa ksi MPa ksi MPa
1200 649 0.5 - - 81 558 - -
1 - - 82 565 - -
Rupture - - 85 586 64 441
1300 704 0.5 73 503 53 365 - -
1 75 517 55 379 - -
Rupture 80 552 61 421 45 310
1400 760 0.5 49 338 35 241 - -
1 50 345 36 248 - -
Rupture 57 393 41 283 27 186
1500 816 0.5 32 221 20 138 - -
1 34 234 22 152 - -
Rupture 38 262 25 172 14 97
1600 871 0.5 18 124 11 76 - -
1 19 131 12 83 - -
Rupture 23 159 14 97 8 55
1700 927 0.5 9.4 65 4.8 33 - -
1 10 69 5.2 36 - -
Rupture 13 90 7.0 48 3.7 26
1800 982 0.5 4.2 29 1.8 12 - -
1 4.6 32 2.0 14 - -
Rupture 6.2 43 3.6 25 - -

*2075°F (1135°C)
**1850°F (1010°C)/2h/AC + 1450°F (788°C)/8h/AC

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