If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    ASTM B703 - 21

    Standard Test Method for Apparent Density of Metal Powders and Related Compounds Using the Arnold Meter

    Active Standard ASTM B703 | Developed by Subcommittee: B09.02

    Book of Standards Volume: 02.05

      Format Pages Price  
    PDF 5 $54.00   ADD TO CART
    Hardcopy (shipping and handling) 5 $54.00   ADD TO CART
    Standard + Redline PDF Bundle 10 $64.00   ADD TO CART

    Significance and Use

    5.1 The apparent density is an important measure of a material characteristic of the powder that is useful to the powder producers and powder users in determining quality and lot to lot consistency.

    5.2 This test method is applicable to free-flowing and non-free-flowing metal powders, lubricated powder mixtures and metal compounds.

    5.3 The apparent density of a lubricated metal powder mixture may be different when a quantity settles after falling into the die cavity during automated compacting compared with the value obtained from a measurement taken in the laboratory under controlled test conditions.

    5.4 This test method simulates the action of the feed shoe on a powder compacting press and gives an apparent density value that closely approximates the apparent density of the powder in the die cavity after the production filling operation.

    5.5 Knowledge of this apparent density value for the final lubricated production powder mixture is very helpful to the powder metallurgy (PM) parts fabricator to set the compression ratios for fixed fill die cavity tooling.

    5.6 The values of apparent density obtained on metal powders with this test method are approximately 0.2 g/cm3 higher than those obtained using the Hall Funnel, Test Method B212, the Carney Funnel, Test Method B417; or the Scott Volumeter, Test Method B329.

    5.7 This test method may be part of a purchase agreement between the powder producer and PM parts producer, or it may be an internal quality control test for either party.

    1. Scope

    1.1 This test method covers a quantitative laboratory procedure for determining the apparent density of both free-flowing and non-free-flowing metal powders, lubricated metal powder mixtures, and powder compounds.

    1.2 Units—With the exception of the values for mass, volume, and density, for which the use of the gram and the cubic centimetre units is the long-standing industry practice, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B212 Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel

    B215 Practices for Sampling Metal Powders

    B243 Terminology of Powder Metallurgy

    B329 Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter

    B417 Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    MPIF Standard

    MPIF48 Determination of Apparent Density of Metal Powders Using the Arnold Meter

    ICS Code

    ICS Number Code 77.160 (Powder metallurgy)

    UNSPSC Code

    UNSPSC Code 31133700(Powdered metals and metal alloys)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0703-21

    Citation Format

    ASTM B703-21, Standard Test Method for Apparent Density of Metal Powders and Related Compounds Using the Arnold Meter, ASTM International, West Conshohocken, PA, 2021, www.astm.org

    Back to Top