SAE AMS 2615G Pressure Test, Hydraulic Pressure As Specified

SAE International is a global organization that connects, mentors and educates engineers and technical experts in the commercial vehicle, automotive and aerospace industries worldwide. The standard, “SAE AMS 2615G Pressure testing, hydraulic pressure as specified,” developed by the organization, describes the requirements and procedures for hydraulic pressure leak testing of components.

According to this standard, the following test classes determine the permissible leakage:

• Class A: Visible leakage is not allowed
• Class B: Up to 2 mL per minute
• Class C: Up to 25 mL per minute for any area bounded by a 2 mm diameter circle
• Class D: Very slow permeation allowing the surface to become slightly damp or wet
• Class E: A specified leakage rate

If a class is not specified, Class A applies.

While materials, methods, practices and processes described or referenced in this standard may involve the use of hazardous materials, this standard does not address the hazards involved in such use. It is the sole responsibility of the user to be knowledgeable regarding the safe and proper use of any hazardous material and to take precautions to ensure the health and safety of all personnel involved.

Hydraulic pressure is the force that presses on a liquid in a pipe or tube. It is measured in pounds per square inch (PSI) and is what makes hydraulic systems like pumps and valves work. In other words, hydraulic pressure is the amount of force a pump exerts on a liquid or gas. It is measured in pounds per square inch (PSI). Normal hydraulic pressure is between 3000 and 4000 PSI. Hydraulic pressure is used in a variety of applications, including irrigation, mining, oil drilling, and manufacturing.

Some systems may have higher or lower pressures depending on the type of hydraulic system and the application. If the pressure in the hydraulic system gets too high, it can damage equipment or even rupture a pipe. If the pressure in the hydraulic system gets too low, it can cause fluid to begin leaking from the system.

Normal hydraulic pressure is one of the most important factors affecting the performance of your hydraulic machine. It allows the oil in the system to flow freely and push the machine forward. It is also important to prevent cavitation, which can damage equipment and cause poor performance.

The technical requirements for equipment in the SAE AMS 2615G standard are described as follows:

• Fixtures: Test fixtures and jigs should be designed and constructed to close only those ports and passages required to pressurize the part and to permit 100 percent evaluation of all areas of the part where leakage could occur. The design should not impose any stress on the part beyond that provided by the test environment. If pressure testing cannot be performed without introducing additional stresses, the design, including types of connections, should be approved by the purchaser.
• Gaskets: Gasket material should be used with plugs or blanking plates to prevent damage to finished surfaces during sealing. Flanges or fittings designed for use with specific O-rings or gaskets should use those used for testing. Formed gaskets that may mask dimensional or surface defects should not be used except on unmachined castings.
• Bleed ports: Bleed ports with valves should be provided to release compressed air.
• Instruments: Pressure gauges and flow meters shall have adequate dial graduations or readability to permit monitoring of the indicated pressure, the maximum gauge capacity shall not exceed five times the test pressure and the readability shall not be less than 5 percent of the test pressure. Gauges shall be calibrated using primary standards within one year of use.
• Safety tank or screen: A suitable tank or screen should be provided to protect the operator in the event of failure of a component.
• Drying oven: A circulating air oven should be used to dry parts exposed to corrosion.

The technical requirements for the test environment in this standard are explained as follows:

• Test media: Water, hydraulic fluid or a suitable petroleum based test media should be used. The test media should be inert to the part and have a viscosity of 25 centistokes or less.
• Cleanliness: The part should be thoroughly cleaned and dried before testing so that leaks can be seen. Loose particles, machine shop chips, oils and other foreign matter should be removed before pressure testing.
• Processes: The part or subassembly should be tested after all machining, shaping, trimming, welding, soldering, anodizing, and similar operations, and before the application of other protective surface treatments such as paints, coatings, platings, and surface coatings that may mask or cover potential leak areas.

Among the numerous testing, measurement, analysis and evaluation studies that our organization has provided for businesses in various sectors, it also provides testing services defined in the “SAE AMS 2615G Pressure test, hydraulic pressure as specified” standard with its trained and expert staff and advanced technological equipment.