SAE AIR5464A-2023
Metal Clad Fibers for Electrical Shielding and Harness Overbraid

Standard No.

SAE AIR5464A-2023

Release Date

2023

Published By

Society of Automotive Engineers (SAE)  US  /  SAE

Latest

SAE AIR5464A-2023

Introduction

Background on the Evolution of Technical Standards

The SAE AIR5464 standard was originally published in 2002, underwent a major revision (Version A) in 2018, and was reaffirmed in December 2023. This standard documents the 25-year technological development of

Typical case: A certain type of military aircraft wiring harness adopts MCAF/copper hybrid braiding:

• Weight reduced by 53-78% (depending on diameter)
• Bending life increased by 10-1000 times (AS4373 Method 704)
• Passed DO-160 standard lightning impulse test (10kA/6 pulses)

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Implementation Recommendations

Material Selection Strategy

1. For high temperature environments (>300℃), MCPF
2. Specify silver-plated versions when solder terminals are required
3. For low-frequency applications, a mixed braid of 75%MCF+25%copper is recommended

Key Process Control Points

• Use titanium alloy/ceramic scissors to prevent fiber unraveling
• Recommended crimping tool: Daniels M22520/2-01
• Control the braid angle between 45-55° for optimal coverage

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Typical Application Scenarios

Application Fields	Weight Reduction Effect	Special Advantages
Pilot Helmet Cable	20%	High Flexibility
Communication Satellite Coaxial Cable	20-25%	Full Band Shielding
Gravity Detection Satellite EMI Sleeve	40-45%	Low Temperature Stability