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Custom 450-H900 Bar: MIL-HDBK-5J Design Allowables

Material classSteel
Alloy / temper / formCustom 450 / H900 / Bar
SpecificationsAMS 5773
HandbookMIL-HDBK-5J, 31 January 2003, section 2.6.3.0, Table 2.6.3.0(c) (pdf page 130 of the chapter file)
Dimension bands1
Density0.28 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 band0–12 in
SpecificationAMS 5773
BasisS
Ftu, ksiL180
LT180
Fty, ksiL170
LT170
Fcy, ksiL175
LT173
Fsu, ksiL114
LT114
Fbru (e/D = 1.5), ksiL298
LT298
Fbru (e/D = 2.0), ksiL381
LT381
Fbry (e/D = 1.5), ksiL265
LT265
Fbry (e/D = 2.0), ksiL326
LT326
e, %L10
LT6
E, Msi29
Ec, Msi31
G, Msi11.2
ν0.29
ρ, lb/in30.28

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

°FF_tuF_tyF_su
-100110.1109.6113.6
0104.1104.5105.6
10098.698.398.9
20093.391.792.7
30088.48587.4
40084.178.683
50081.673.680.2
60080.170.378.1
70077.167.574.2
80073.464.569.4

Factors in percent of the room-temperature allowable.

Other Custom 450 Tables

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from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ.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.