MIL-DTL-14852D (AR)
3. REQUIREMENTS
3.1 Required inspection
3.1.1 First article inspection. When specified (see 6.2) a sample
shall be subjected to first article inspection in accordance with 4.2
3.1.2 Conformance. A sample shall be subjected to conformance
inspection in accordance with 4.3.
3.2 Materials, parts and assemblies. All materials, parts, and
assemblies shall be in accordance with the requirements in the
drawings listed in paragraphs 4.3.2.1 through 4.3.2.7.
3.3 Mechanical properties
3.3.1 Rotating band. After application and subsequent removal from
the projectile body, the rotating band shall have the following
mechanical properties:
a. Tensile strength of not less than 30,000 pounds per square
inch (psi)
b. Elongation of not less than 15 percent in 1 inch
3.3.2 Base plug. Mechanical properties specified on drawing
10534903, shall apply throughout the base plug.
3.3.3 Body. Mechanical properties shall be as specified on
drawing 10534902.
3.4 Rotating band seating
3.4.1 Rotating band cleanliness. Prior to banding, the band seat
shall be clean and free of oil, dirt, grease, rust or other foreign
matter. Shot or sandblasting is not permitted for cleaning the band
seat after knurling.
3.4.2 Band blank gilding metal. The rotating band blank shall
be in the form of a solid ring and shall be annealed to comply with
the applicable specification. Annealing prior to banding shall not be
necessary in the case of hot banding in excess of 800 degrees F.
3.4.3 Application of band blank. The rotating band blank shall be
pressed into the band seat after final heat treatment of the
projectile body. The band blank shall be applied in such a manner as
not to distort the projectile body.
3.4.4 Sidewall contact. The band blank must contact the sidewall
of the band seat for a minimum of eight-tenths of the band seat depth,
measured from the outside surface of the projectile body to the
rotating band undercut surface.
3.4.5 Sidewall gap. There shall be no gap between the rotating
band and the band seat sidewalls at the outside of the surface of the
projectile body after the rotating band has been machined to final
dimensions.
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