# 587.14 Deformable face component dimensions and material specifications.
The dimensions of the deformable face are illustrated in Figure 1 of this subpart. The dimensions and materials of the individual components are listed separately below. All dimensions allow a tolerance of ±2.5 mm (0.1 in) unless otherwise specified.
(a) Main honeycomb block.
(1) *Dimensions.* The main honeycomb block has a height of 650 mm (25.6 in) (in the direction of honeycomb ribbon axis), a width of 1,000 mm (39.4 in), and a depth of 450 mm (17.7 in)(in the direction of honeycomb cell axis).
(2) *Material.* The main honeycomb block is constructed of the following material. The honeycomb is manufactured out of aluminum 3003, with a foil thickness of 0.076 mm (0.003 in) ±0.004 mm (0.002 in) a cell size of 19.14 mm (0.75 in), a density of 28.6 kg/m
<sup>3</sup> (1.78 lb/ft
<sup>3</sup>) ±2kg/m
<sup>3</sup> (0.25 1b/ft
<sup>3</sup>), and a crush strength of 0.342 MPa (49.6 psi) + 0%−10%, measured in accordance with the certification procedure described in § 587.15.
(b) Bumper element honeycomb.
(1) *Dimensions.* The bumper element honeycomb has a height of 330 mm (13 in)(in the direction of honeycomb ribbon axis), a width of 1,000 mm (39.4 in), and a depth of 90 mm (3.5 in) (in the direction of honeycomb cell axis).
(2) *Material.* The bumper element honeycomb is constructed of the following material. The honeycomb is manufactured out of aluminum 3003, with a foil thickness of 0.076 mm (0.003 in) ±0.004 mm (0.0002 in), a cell size of 6.4 mm (0.25 in) ±1 mm (0.040 in), a density of 82.6 kg/m
<sup>3</sup> (5.15 lb/ft
<sup>3</sup>) ±3 kg/m
<sup>3</sup> (0.19 lb/ft
<sup>3</sup>), and a crush strength of 1.711 MPa (248 psi) + 0% −10%, measured in accordance with the certification procedure described in § 587.14.
(c) Backing sheet.
(1) *Dimensions.* The backing sheet has a height of 800 mm (31.5 in), a width of 1,000 mm (39.4 in), and a thickness of 2.0 mm (0.08 in) ±0.1 mm (0.004 in).
(2) *Material.* The backing sheet is manufactured out of aluminum 5251/5052.
(d) Cladding sheet.
(1) *Dimensions.* The cladding sheet of the main honeycomb block has a total length of 1,700 mm (66.9 in), a width of 1,000 mm (39.4 in), and a thickness of 0.81 mm (0.03 in) ±0.07 mm (0.003 in). It is shaped as indicated in Figure 1.
(2) *Material.* The cladding sheet of the main honeycomb block is manufactured out of aluminum 5251/5052.
(e) Bumper element honeycomb facing sheet.
(1) *Dimensions.* The bumper facing sheet has a height of 330 mm (13 in), a width of 1,000 mm (39.4 in), and a thickness of 0.81 mm (0.03 in) ±0.07 mm (0.003 in).
(2) *Material.* The bumper element honeycomb facing sheet is manufactured out of aluminum 5251/5052.
(f) Adhesive. The adhesive used throughout is a two-part polyurethane. (such as Ciba-Geigy XB5090/1 resin with XB5304 hardener, or equivalent).