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7050-T74 Die forging: MIL-HDBK-5J Design Allowables

Material classAluminum
Alloy / temper / form7050 / T74 / Die forging
SpecificationsAMS 4107 and AMS-A-22771
HandbookMIL-HDBK-5J, 31 January 2003, section 3.7.4.0, Table 3.7.4.0(c) (pdf page 326 of the chapter file)
Dimension bands4
Density2823 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 band0–2 in (0–50.8 mm)2.001–4.000 in (50.83–101.6 mm)4.001–5.000 in (101.6–127 mm)5.001–6.000 in (127–152.4 mm)
SpecificationAMS 4107 and AMS-A-22771AMS 4107 and AMS-A-22771AMS 4107 and AMS-A-22771AMS 4107 and AMS-A-22771
BasisSSSS
Ftu, MPaL496.4489.5482.6482.6
LT468.8461.9455.1455.1
ST…………
Fty, MPaL427.5420.6413.7406.8
LT386.1379.2372.3372.3
ST…………
Fcy, MPaL434.4434.4434.4427.5
LT…………
ST413.7406.8399.9393
Fsu, MPaL289.6289.6282.7282.7
LT289.6289.6282.7282.7
ST289.6289.6282.7282.7
Fbru (e/D = 1.5), MPaL682.6675.7668.8668.8
LT682.6675.7668.8668.8
ST682.6675.7668.8668.8
Fbru (e/D = 2.0), MPaL903.2889.4875.6875.6
LT903.2889.4875.6875.6
ST903.2889.4875.6875.6
Fbry (e/D = 1.5), MPaL565.4558.5537.8537.8
LT565.4558.5537.8537.8
ST565.4558.5537.8537.8
Fbry (e/D = 2.0), MPaL661.9655634.3634.3
LT661.9655634.3634.3
ST661.9655634.3634.3
e, %L7777
LT5433
ST…………
E, GPa70.3370.3370.3370.33
Ec, GPa73.7773.7773.7773.77
G, GPa26.8926.8926.8926.89
ν0.330.330.330.33
ρ, kg/m³2823282328232823

Effect of Temperature

The handbook maps no temperature-effect figure to this table.

Other 7050 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from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ.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.