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Inconel 718-Solution treated and aged per indicated specificat Sheet: 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 / Sheet
Specifications	AMS 5596
Handbook	MIL-HDBK-5J, 31 January 2003, section 6.3.5.0, Table 6.3.5.0(b) (pdf page 52 of the chapter file)
Dimension bands	1
Density	8221 kg/m³

Design Mechanical and Physical Properties (room temperature)

Converted from the handbook table (ksi, Msi, lb/in³) and rounded to 4 significant figures; dimension bands in inches with mm in parentheses. 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		0.010–0.187 in (0.254–4.75 mm)
Specification		AMS 5596
Basis		A	B
F_tu, MPa	L	1241	1324
F_tu, MPa	LT	1241	1317
F_ty, MPa	L	999.7	1076
F_ty, MPa	LT	1014	1089
F_cy, MPa	L	1069	1151
F_cy, MPa	LT	1089	1172
F_su, MPa	L	854.9	910.1
F_su, MPa	LT	854.9	910.1
F_bru (e/D = 1.5), MPa	L	2006	2130
F_bru (e/D = 1.5), MPa	LT	2006	2130
F_bru (e/D = 2.0), MPa	L	2620	2779
F_bru (e/D = 2.0), MPa	LT	2620	2779
F_bry (e/D = 1.5), MPa	L	1434	1538
F_bry (e/D = 1.5), MPa	LT	1434	1538
F_bry (e/D = 2.0), MPa	L	1662	1786
F_bry (e/D = 2.0), MPa	LT	1662	1786
e, %	L	…	…
e, %	LT	12	12
E, GPa		202.7	202.7
E_c, GPa		213	213
G, GPa		78.6	78.6
ν		0.29	0.29
ρ, kg/m³		8221	8221

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

°C	F_tu	F_ty
-184	115.8	115.8
-129	111.1	111.1
-73	106.6	106.6
-18	102.5	102.5
38	99.8	99.8
93	97.2	97.2
149	95.9	95.9
204	94.5	94.5
26	93.8	93.8
316	92.8	92.8
371	92.1	92.1
427	91.2	91.2
538	89.3	89.3
649	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 Bar (Table 6.3.5.0(c))
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 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.