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HAYNES® Alloys

Thermal Expansion

HAYNES® 242® alloy exhibits significantly lower thermal expansion characteristics than most nickel-base high-temperature alloys in the range of temperature from room temperature to 1600°F (871°C). Although its expansion is greater than that for alloy 909 below 1000°F (538°C), at higher temperatures, the difference narrows considerably.

Total Thermal Expansion, Room to Elevated Temperature

242 - Total Thermal Expansion, Room to Elevated Temperature

Mean Coefficient of Thermal Expansion

The following compares the mean coefficient of expansion for several alloys:

Alloy Mean Coefficient of Expansion from RT to Temperature, in./in/-°F (mm/mm-°C) x10-6
1000°F 538°C 1100°F 593°C  1200°F 649°C  1300°F 704°C  1400°F 760°C 
in./in/-
°F x10-6
mm/mm-
°C x10-6
in./in/-
°F x10-6
mm/mm-
°C x10-6
in./in/-
°F x10-6
mm/mm-
°C x10-6
in./in/-
°F x10-6
mm/mm-
°C x10-6
in./in/-
°F x10-6
mm/mm-
°C x10-6
909 5 9 5.4 9.7 5.8 10.4 6.2 11.2 6.6 11.9
242® 6.8 12.2 6.8 12.3 7 12.6 7.2 13 7.7 13.9
B 6.7 12 6.7 12 6.7 12 6.9 12.4 7.1 12.8
N 7.3 13.1 7.4 13.3 7.5 13.5 7.6 13.7 7.8 14
S 7.4 13.2 7.5 13.5 7.6 13.7 7.8 14 8 14.4
X 8.4 15.1 8.5 15.3 8.6 15.5 8.6 15.7 8.8 15.8
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