HAYNES^® 242^® alloy has excellent retained ductility and impact strength after long-term thermal exposure at temperature. Combined with its high strength and low thermal expansion characteristics, this makes for very good containment properties in gas turbine static structures. The graphs below show the retained room-temperature tensile elongation and impact strength for 242 alloy versus other relevent materials after a 4000 hour exposure at 1200°F (650°C).

Comparative Retained Ductility and Impact Strength

Room-Temperature Tensile Elongation Room Temperature Impact Strength

*Alloy 909 data for 1000 hours.

Room-Temperature Properties after Exposure at 1200°F (650°C)*

	Ultimate
Exposure	Tensile		0.2% Yield		Elongation	Reduction	Charpy
Time	Strength		Strength		in 2 in. (50 mm)	in Area	V-Notch

Hours	Ksi	Mpa	Ksi	Mpa	%	%	Ft.-lbs.	Joules

0	179	1235	110	760	39	44	66	90
1000	194	1340	119	820	28	38	41	56
4000	196	1350	122	840	25	37	31	42
8000	193	1330	121	835	24	39	26	35
*Samples machined from plate after exposure. Duplicate tests.

Haynes International, Inc. 800-354-0806 765-456-6012

HAYNES® 242® alloy Information

An age-hardenable Ni-Mo-Cr alloy that combines high-temperature strength, low thermal expansion characteristics and good oxidation-resistance for service to 1400°F (760°C). Also resistance to high-temperature fluorine and fluoride environments.

HAYNES^® 242^® alloy Information

An age-hardenable Ni-Mo-Cr alloy that combines high-temperature strength, low thermal expansion characteristics
and good oxidation-resistance for service to 1400°F (760°C). Also resistance to high-temperature fluorine and fluoride environments.