ASTM B963 Standard Test Methods for Oil Content, Oil-Impregnation Efficiency, and Interconnected Porosity of Sintered Powder Metallurgy (PM) Products

    Introduction to ASTM B963

    Powder metallurgy (PM) products are popular in self-lubricating applications, including bearings, bushings, and other mechanical components. Their performance is mainly determined by the porosity of the material and the storage and release of oil in the process of operation. ASTM B963 uses standardized test methods to assess these critical properties with emphasis on the following three aspects: the oil content of a specimen, which determines the lubrication capacity of a specimen; the efficiency of oil-impregnation, which is the ability of pores to fill during manufacturing; and the interconnected porosity, which is the network of pores in which the oil can be held.

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    Get Certified ASTM B963 for Accurate Evaluation of PM Porosity and Lubrication

    ASTM B963 certification assures that the sintered PM products are evaluated under standardized tests that measure the level of oil content, efficiency of impregnation, and interconnected porosity. Certified testing gives reliable data on quality control, process optimization, and the reliability of the product.

    Scope of ASTM B963

    • Test oil content, impregnation efficiency, and related porosity of sintered PM products.
    • Can be applied to self-lubricating bearings, bushings, and porous structural components.
    • Defines impregnation, extraction, and mass measurement procedures.
    •  Helps to assess pore interconnectivity and lubrication efficiency.

    ASTM B963 Equipment and Sample Preparation

    Specimen PreparationSintered PM specimens are cleaned, dried, and weighed; samples are then impregnated with oil under vacuum or pressure to fill interconnected pores before testing.
    Specimen SizeRepresentative PM components such as bearings, bushings, or machined test samples are selected for evaluation.
    Specimen DimensionsDimensions are measured to assist in density and porosity calculations, though mass-based measurements primarily determine oil content and impregnation efficiency.

    Applications of ASTM B963

    • Bushing and sleeves of powder metallurgy powder.
    • Engine and transmission components of the auto PM.
    •  Porous structural components of industrial machinery.
    • Aerospace PM lubrication of important parts.

    ASTM B963 Common Challenges and Troubleshooting

    The correct testing requires the consistency of the temperature of weighing. It can be variable in case the specimen being used is too small or irregularly surfaced or when the oil is not impregnated. Moreover, the balance of analysis will need to be calibrated appropriately, and the results will need to be replicated to ensure feasibility.

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    ASTM B963 Aggregate Testing Technique, Process, and Data Collection

    The specimen is dried and put on a scale until it attains its initial mass is obtained. This is followed by an oil impregnation process, which is usually under vacuum or pressure to guarantee oil filling of interconnected pores. The specimen is then weighed after impregnation to find out that the oil has been uptaken. Oil recovery can be done to analyze the oil retained and the porosity feature. Oil content, impregnation efficiency, and interrelated porosity are computed based on mass differentiations and density values. All outcomes are documented for comparison with the given product performance specifications.

    ASTM B963 Testing Procedure and Requirements

    EquipmentASTM B963 needs a very accurate analytical balance, checked with a standard mass. The impregnation of the specimen is done in an oil bath or a vacuum setup, and measurements by Archimedes require the use of a water immersion setup
    Sample PreparationThe maximum mass per specimen should be 1.0 g. In smaller sizes, several of them can be compounded. Weighing should be done at a uniform temperature of the specimen, the balance, and the surroundings.

    ASTM B963 Analysis Results and Interpretation

    Acknowledged performances show that the PM material has enough interlocking porosity to hold lubricant and help it to perform as a self-lubricant. The increased oil content and effective impregnation imply good pore connectivity and high operational durability. Low retention of oil or variable porosity measure could be a measure of poor sintering, closed pore structure, or lack of proper impregnation measures.

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    ASTM B963 Problem & Solution

    Unless the interconnected porosity and efficiency of impregnation with oil are controlled or reviewed. ASTM B963 provides standardized test methods to quantify oil content, impregnation efficiency, and interconnected porosity.

    FAQ

    Where can I get the astm b963 tested?
    You can share your astm b963 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm b963 test to various testing techniques.
    Please contact us for a detailed quote for your astm b963 testing needs. Cost incurred to carry out different astm b963 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
    The required number of samples or specimens should comply with the procedure given in the astm b963 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
    The turnaround time for astm b963 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

    Updated on September 17, 2026

    Davis Scott
    About Author
    Davis Scott
    Davis Scott is an Electrical and Electronics Engineer specializing in multidisciplinary validation, quality assurance, and comprehensive electro-mechanical testing.
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