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Inconel 718-Solution treated and aged per indicated specificat Bar: MIL-HDBK-5J Design Allowables

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Material class	Heat-Resistant
Alloy / temper / form	Inconel 718 / Solution treated and aged per indicated specificat / Bar
Specifications	AMS 5662 and AMS 5663; AMS 5664
Handbook	MIL-HDBK-5J, 31 January 2003, section 6.3.5.0, Table 6.3.5.0(c) (pdf page 53 of the chapter file)
Dimension bands	8
Density	0.297 lb/in3

Design Mechanical and Physical Properties (room temperature)

As printed in the handbook table. Bases: A and B are statistical minimums (99 % and 90 % probability at 95 % confidence), S the specification minimum. Grain directions: L longitudinal, LT long transverse, ST short transverse.

Dimension band		0–10 in	0.250–1.000 in	1.001–1.500 in	1.501–2.000 in	2.001–2.500 in	2.501–3.000 in	3.001–4.000 in	4.001–5.000 in
Specification		AMS 5664	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663	AMS 5662 and AMS 5663
Basis		S	S	S	S	S	S	S	S
F_tu, ksi	L	185	185	185	185	185	185	185	185
	LT	180	180	180	180	180	180	180	180
	ST	…	…	…	…	…	180	180	180
F_ty, ksi	L	150	150	150	150	150	150	150	150
	LT	150	150	150	150	150	150	150	150
	ST	…	…	…	…	…	146	150	150
F_cy, ksi	L	…	156	156	156	156	156	156	156
	LT	…	…	…	…	…	…	…	…
	ST	…	…	…	…	156	156	156	156
F_su, ksi	L	…	111	114	116	118	119	121	123
	LT	…	111	114	116	118	119	121	123
	ST	…	…	…	…	118	119	121	123
F_bru (e/D = 1.5), ksi	L	…	309	309	309	309	309	309	309
	LT	…	309	309	309	309	309	309	309
	ST	…	…	…	…	309	309	309	309
F_bru (e/D = 2.0), ksi	L	…	394	394	394	394	394	394	394
	LT	…	394	394	394	394	394	394	394
	ST	…	…	…	…	394	394	394	394
F_bry (e/D = 1.5), ksi	L	…	216	216	216	216	216	216	216
	LT	…	216	216	216	216	216	216	216
	ST	…	…	…	…	216	216	216	216
F_bry (e/D = 2.0), ksi	L	…	257	257	257	257	257	257	257
	LT	…	257	257	257	257	257	257	257
	ST	…	…	…	…	257	257	257	257
e, %	L	10	12	12	12	12	12	12	12
	LT	10	6	6	6	6	6	6	6
	ST	…	…	…	…	…	6	6	6
E, Msi		29.4	29.4	29.4	29.4	29.4	29.4	29.4	29.4
E_c, Msi		30.9	30.9	30.9	30.9	30.9	30.9	30.9	30.9
G, Msi		11.4	11.4	11.4	11.4	11.4	11.4	11.4	11.4
ν		0.29	0.29	0.29	0.29	0.29	0.29	0.29	0.29
ρ, lb/in3		0.297	0.297	0.297	0.297	0.297	0.297	0.297	0.297

Effect of Temperature

Percent of the room-temperature value against temperature, digitized from the handbook figures (the shortest exposure of each figure, every 10 °F). Strength curves give the allowable at temperature; "after exposure" curves give the room-temperature property after a soak at that temperature.

Strength allowables at temperature, percent of room temperature

Moduli at temperature

°F	F_tu	F_ty
-300	115.8	115.8
-200	111.1	111.1
-100	106.6	106.6
0	102.5	102.5
100	99.8	99.8
200	97.2	97.2
300	95.9	95.9
400	94.5	94.5
500	93.8	93.8
600	92.8	92.8
700	92.1	92.1
800	91.2	91.2
1000	89.3	89.3
1200	80.6	80.6

Factors in percent of the room-temperature allowable.

Other Inconel 718 Tables

Inconel 718-Solution treated and aged per indicated specificat Forging (Table 6.3.5.0(c))
Inconel 718-Solution treated and aged per indicated specificat Plate (Table 6.3.5.0(b))
Inconel 718-Solution treated and aged per indicated specificat Sheet (Table 6.3.5.0(b))
Inconel 718-Solution treated and aged per indicated specificat Sheet and plate (Table 6.3.5.0(b))
Inconel 718-Solution treated and aged per indicated specificat Tubing (Table 6.3.5.0(b))

Source and Use

U.S. Department of Defense (2003). Metallic Materials and Elements for Aerospace Vehicle Structures. MIL-HDBK-5J, 31 January 2003 (public domain). The values are the handbook's design allowables as extracted from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ. No warranty is given.