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Creep and Stress-Rupture Strength

HAYNES® 242® alloy is an is an age-hardenable material which combines excellent strength and ductility in the aged condition with good fabricability in the annealed condition. It is particularly effective for strength-limited applications up to 1300°F (705°C), where its strength is as much as double that for typical solid-solution strengthened alloys.

Comparison of 100 Hour Stress-Rupture Strengths*

242 - Comparison of 100 Hour Stress-Rupture Strengths

*Alloy B and Alloy N sheet products. All others hot forged or rolled plate, bar, and rings.

242® Plate, Age-Hardened

Temperature Creep Approximate Initial Stress to Produce Specified Creep in
10 Hours 100 Hours 1,000 Hours 10,000 Hours
°F °C % ksi MPa ksi MPa ksi MPa ksi MPa
1000 538 0.5 - - - - - - - -
1 - - - - - - - -
R 153 1055 138 952 122 841 109 752
1100 593 0.5 - - - - - - 75 517
1 - - - - - - 79 545
R 126 869 112 772 100 690 85 586
1200 649 0.5 - - 82 565 62 427 38 262
1 - - 85 586 66 455 42 290
R 105* 724* 91 627 75 517 48 331
1300 704 0.5 72 496 48 331 33 228 13* 90*
1 75 517 53 365 37 255 17* 117*
R 87* 600* 66 455 44 303 25 172
1400 760 0.5 24 165 12 83 - - - -
1 27 186 15 103 8.0 55 - -
R 46 317 29 200 18 124 - -

*Significant extrapolation

242® Sheet, Age-Hardened

Temperature Creep Approximate Initial Stress to Produce Specified Creep in
10 Hours 100 Hours 1,000 Hours
°F °C % ksi MPa ksi MPa ksi MPa
1000 538 0.5 - - - - - -
1 - - - - - -
R - - 133 917 125 862
1100 593 0.5 - - - - 97 669
1 - - - - 102 703
R - - 117 807 110 758
1200 649 0.5 - - 79 545 58 400
1 - - 82 565 62 427
R 110* 758* 90 621 69 476
1300 704 0.5 59 407 44 303 33 228
1 64 441 47 324 35 241
R 80 552 57 393 41 283
1400 760 0.5 21 145 12* 83* - -
1 24 165 14 97 - -
R 41 283 25 172 15 103

*Significant extrapolation

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