Model: MIL-T-81556

Structural Beam

Properties:

Fabrication Method
Extruded
Overall Height
4.350 inches
Length
12.000 feet
Left Side Top Flange Thickness
0.770 inches
Right Side Top Flange Thickness
0.770 inches
End Application
B-2 bomber
Basic Shape Style
T shape
Leg Thickness
0.650 inches
Left Side Top Flange Distance To Center Of Both Flanges
1.525 inches
Right Side Top Flange Distance To Center Of Both Flanges
1.725 inches
Fillet Radius Where Top Left Flange Joins Web Flange/leg
0.380 inches
Fillet Radius Where Top Right Flange Joins Web Flange/leg
0.380 inches
Top Flange Width
3.250 inches
First Tip Style
Square w/ inner and outer corner radii
First Tip Inner Radius
0.062 inches
First Tip Outer Radius
0.062 inches
Second Tip Relationship To First Tip
Identical
Third Tip Relationship To Preceding Tips
Identical w/first tip
Right Top Inside Angle
90.0 degrees
Left Top Inside Angle
90.0 degrees
Heat Treatment
Annealed
Material
Titanium alloy, mil-t-81556, comp ab-1
Material
Titanium alloy, mil-t-81556, comp ab-1
Nondefinitive Specification/std Data
Composition ab-1 and condition a
NSN
9540-01-429-3011
Part Number
MIL-T-81556
Description
Beam,structural
CAGE
81349

Part MIL-T-81556 NSN 9540-01-429-3011

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37018
FIIG:
A13100
Concept No.:
App. Key:
AS
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
BQ
CRITL:
X

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