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Aluminum Alloy Extrusions 7.8Zn - 2.6Mg - 2.0Cuu - 0.10Zr (7068-T6511) Solution Heat Treated, Stress Relieved, and Precipitation Heat Treated

2019-09-18
WIP
AMS4331A
This specification covers an aluminum alloy in the form of extruded bars, rods, shapes (profiles), and tubing.

These extrusions have been used typically for structural parts requiring a combination of high tensile strength and moderate fatigue strength, but usage is not limited to such applications.

Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking; SAE ARP 823 recommends practices to minimize such conditions.

Standard

Patterns of O-ring Failures

2019-08-12
WIP
AIR1707C
The information presented herein describes the commonly observed patterns of O-ring failure by means of both text and illustration. Possible causes and corrective actions are indicated for alleviating the problem.
Standard

Fiberboard Crease Bending Test

2019-07-11
WIP
J119
This test method is designed to determine the suitability of a painted or unpainted fiberboard for application involving creasing and bending. The specific purpose of the test is to determine whether a given material, properly creased, can be bent along the impressed crease without objectionable failure on the surface of the bend.
Standard

Design Guidelines for Fiberboard Materials

2019-07-10
WIP
J1774
This document provides information on the various fiberboard products, which are available for automotive application. It is intended to give engineers and designers a better understanding of product usage, characteristics, properties and industry terminology. The following sections cover these topics: 2. General Product Information 3. Design Characteristics 4. Physical/Mechanical Properties 5. Fiberboard Definitions In sections 2, 3 and 4 the fiberboard products are categorized. These sections give an overview of product types, with general information about characteristics and properties. In cases where product categories encompass more than one material or material grade, ranges were established to cover all of the products in that category. The individual companies that supply fiberboard products should be consulted for specific information about a particular product or application.
Standard

Aluminum Alloy, Extruded Profiles (2043-T85) 2.8Cu - 1.65Li - 0.35Mg - 0.1Zr Solution Heat Treated, Stress Relieved by Stretching, and Aged

2019-07-03
CURRENT
AMS4450
This specification covers an aluminum alloy in the form of extruded rods, bars, and profiles (shapes) produced with thickness between 0.040 and 2.500 inches (1.02 to 38.10 mm) in thickness, and having a maximum cross sectional area of 23 in2 (15000 mm2) and a maximum circumscribing circle diameter (circle size) of 16 inches (406 mm) (see 8.4.1).
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