MIL-PRF-46176B
SOCIETY OF AUTOMOTIVE ENGINEERS (SAE)
AMS-QQ-A-250/4 - Aluminum Alloy 2024, Plate and Sheet (DoD adopted).
SAE J403
- Chemical Compositions of SAE Carbon Steels
(DoD adopted).
SAE J431
- Automotive Gray Iron Castings (DoD adopted).
SAE J1703
- Motor Vehicle Brake Fluid (DoD adopted).
(Application for copies should be addressed to the Society of Automotive Engineers, Inc.,
400 Commonwealth Drive, Warrendale, PA 15096).
2.4 Order of precedence. In the event of a conflict between the text of this document and
the references cited herein, the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 Qualification. Silicone brake fluids furnished under this specification shall be products
that are authorized by the qualifying activity for listing on the applicable qualified product list
before contract award (see 4.1.1 and 6.3). Any change in the formulation of a qualified product
will necessitate its requalification.
3.2 Design, materials, and manufacturing processes. Unless otherwise specified, the
design, materials, and manufacturing process selection is the prerogative of the contractor as long
as all articles submitted to the government fully meet the operating, interface, support and
ownership, and environmental requirements specified.
3.3 Operating requirements.
3.3.1 Equilibrium reflux boiling point. The equilibrium reflux boiling point of the brake
fluid shall be 260 degrees Celsius (°C) minimum (see 4.3.3.1).
3.3.2 Wet boiling point. The wet boiling point of the brake fluid shall be 207°C minimum
(see 4.3.3.2).
3.3.3 Flash point. The flash point of the brake fluid shall be 204°C minimum
(see 4.3.3.3).
3.3.4 Viscosity.
3.3.4.1 Low temperature (-55°C). The kinematic viscosity of the brake fluid at -55°C
shall not be more than 900 square millimeters per second (mm²/s) (see 4.3.3.4.1).
3.3.4.2 High temperature (100°C). The kinematic viscosity of the brake fluid at 100°C
shall not be less than 1.3 mm²/s (see 4.3.3.4.2).
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