Model: MIL-T-81556

Structural Beam

Properties:

Fabrication Method
Extruded
Length
12.000 feet
End Application
B-2 bomber
Leg Thickness
0.610 inches
Fillet Radius Where Top Left Flange Joins Web Flange/leg
0.190 inches
Fillet Radius Where Top Right Flange Joins Web Flange/leg
0.190 inches
First Tip Style
Square w/ inner and outer corner radii
First Tip Inner Radius
0.060 inches
First Tip Outer Radius
0.060 inches
Second Tip Relationship To First Tip
Identical
Third Tip Relationship To Preceding Tips
Identical w/first tip
Right Top Inside Angle
140.0 degrees
Left Top Inside Angle
40.0 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
9540-01-430-2779
Part Number
MIL-T-81556
Description
Beam,structural
CAGE
81349

Part MIL-T-81556 NSN 9540-01-430-2779

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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