--- type: "WebPage" title: "ASTM B527 Testing" description: "Do you need to measure the tap density of your metal powders according to ASTM B527? Securing compression and sintering processes for the ASD sector with ASTM B527 In the Aerospace, Space, and Defense (ASD) sectors, precise knowledge of the..." resource: "https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b527/" tags: ["EN", "pll_698c82f40eeee", "Arnaud JOUDRAIN Meta"] timestamp: "2026-04-22T08:59:37Z" published: "2026-02-11T13:29:48Z" language: "en" author: "Filab" --- # ASTM B527 Testing ## Do you need to measure the tap density of your metal powders according to ASTM B527? ### Securing compression and sintering processes for the ASD sector with ASTM B527 In the [Aerospace](https://filab.fr/en/sectors-of-activity/laboratory-analysis-aeronautics-aerospace.md), [Space](https://filab.fr/en/sectors-of-activity/laboratory-analysis-aeronautics-aerospace.md), and [Defense](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector.md) (ASD) sectors, precise knowledge of the physical properties of [metal powders](https://filab.fr/en/our-services/our-analysis-services/laboratory-analysis-powder-characterization/metallic-powders-characterization-services-at-filab-laboratory.md) is a safety imperative. Tap density (or tapped density) is a fundamental data point for anticipating powder behavior during mold filling and ensuring the compactness of your **parts**. [ASTM B527](https://store.astm.org/b0527-22.html) defines a standard test method for determining the tap density of metal powders and compounds. It measures a powder's capacity to re-arrange itself under the effect of controlled vibrations or [mechanical tapping](https://filab.fr/en/our-services/our-expertise-services/mechanical-laboratory-test.md). At **FILAB**, we support manufacturers in the ASD supply chain with the physical characterization of their powders according to ASTM B527. Our goal is clear: to ensure the reliability of your technical and industrial decisions. ### ASTM B527: a key challenge for material densification ### Determination of tap density according to ASTM B527 The ASTM B527 standard relies on the use of a Tap Density Tester (or Tapped Volumeter). A known quantity of powder is placed in a graduated cylinder , which undergoes a defined number of mechanical drop cycles until the powder volume becomes constant. It is specifically used to: - **Evaluate the packing degree** of Titanium, Nickel, or Inconel powders. - **Calculate the Carr Index or Hausner Ratio** (linked to apparent density) to predict flowability. - **Optimize pressing steps** in Powder Metallurgy (PM). In the Aerospace and Defense industries, mastering this property according to ASTM B527 has a direct impact on: - **Reduction of shrinkage** during sintering. - **Homogeneity of the component's internal structure.** - **Long-term reliability** of **strategic components** produced by Isostatic Pressing (HIP/CIP) or Additive Manufacturing. ## FILAB, a laboratory tailored to Aerospace & Defense requirements ### An analytical park dedicated to ASTM B527 testing Analysis according to ASTM B527 requires standardized equipment guaranteeing a constant drop height and tap frequency. To meet these requirements, **FILAB** provides its clients with state-of-the-art tools : [### ICP-OES](https://filab.fr/en/our-technical-resources/laboratory-analysis-icp-icp-ms-icp-aes.md) [### Tap Density Tester](https://filab.fr/en/our-services/our-analysis-services/laboratory-analysis-powder-characterization/tap-density-measurement-laboratory.md) [### Hall or Carney Flowmeter Funnels Flowability test](https://filab.fr/en/our-technical-resources/flowability-test-hall-or-carney-cone-in-laboratory.md) ### PSD [### Helium Pycnometer](https://filab.fr/en/our-technical-resources/helium-pycnometry-analysis-laboratory.md) [### C, H, O, N, S Analyzers](https://filab.fr/en/our-technical-resources/chons-laboratory-analysis.md) ### Dedicated material expertise services At **FILAB**, ASTM B527 analysis is part of a comprehensive powder characterization approach. We do not just measure a final volume: we analyze your material’s aptitude for implementation. Our teams work on : Quality monitoring of powders between different manufacturing batches Expertise on compactness defects in sintered parts Study of the influence of [grain morphology](https://filab.fr/en/laboratory-analysis-powder-morphology.md) on packing behavior ### Why Choose FILAB ? - **45 years** of recognized expertise in analysis and materials science - **Dual competence:** Chemistry / Materials - Specializing in **metallic alloys**and **critical applications** - **Customer qualification**: Safran, Dassault Aviation, and Framatome - **ISO 17025 Accreditation** regarding metallic alloys [Discover our accreditations](https://filab.fr/en/about-us/accreditations-en.md) Discover our metallurgical expertise ## Analysis of Iron, Aluminium, Molybdenum, Copper, Tin, Chromium, Titanium, Lead, Nickel, Zinc [Learn more](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory.md) ### Our analytical services based on ISO and ASTM standards for the ASD sector [Analysis according to ASTM E3061 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e3061.md) [Analysis according to ASTM E1086 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1086.md) [Analysis according to ASTM E1019 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1019.md) [Analysis according to ISO 8287 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-8287-testing.md) [Analysis according to ASTM B213 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/analysis-astm-b213.md) [Analysis according to ASTM B964 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b964.md) [Analysis according to ISO 12154 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-iso-12154.md) [Analysis according to ASTM E1868 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1868.md) [Analysis according to ASTM E1409 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-e1409-analysis.md) [Analysis according to ASTM E415 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e415.md) [Analysis according to ASTM E1251 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-e1086.md) [Analysis according to ISO 15350 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-15350-testing.md) [Analysis according to ISO 4935 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-4935-analysis.md) [Analysis according to ISO 4490 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/iso-4490-analysis.md) [Analysis according to ASTM E1941 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/analysis-astm-e1941.md) [Analysis according to ASTM B923 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-b923.md) [Analysis according to ASTM A269 standard](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/astm-analysis-a269.md) ### Our analytical services in accordance with MIL requirements for the ASD sector [Analysis according to MIL-T-9047 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-t-9047-analysis.md) [Analysis according to MIL-A-6088 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-a-6088-analysis.md) [Analysis according to MIL-DTL-14067 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-dtl-14067-analysis.md) [Analysis according to MIL-DTL-5002 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-dtl-5002-analysis.md) [Analysis according to MIL-A-22771 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-a-22771-analysis.md) [Analysis according to MIL-S-22499 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-s-22499-analysis.md) [Analysis according to MIL-P-83348 requirement](https://filab.fr/en/sectors-of-activity/laboratory-analyses-tests-defense-security-sector/mil-p-83348-analysis.md) ### Our additional metallographic analysis [Micrographic analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/laboratory-micrographic-examination.md) [Failure analysis](https://filab.fr/en/our-services/our-expertise-services/laboratory-analysis-failures.md) [Chemical composition analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/metallic-alloy-analysis-laboratory.md) [Metallurgical analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory.md) [Metallographic analysis](https://filab.fr/en/our-services/our-analysis-services/metallurgical-analysis-laboratory/examination-metallographic-section-laboratory.md) [Elemental analysis](https://filab.fr/en/our-services/our-analysis-services/chemical-analysis-laboratory/laboratory-elemental-analysis.md) [Analysis of metallic alloys](https://filab.fr/en/analysis-of-metallic-alloys-in-the-laboratory.md) ### Accreditation This [Nadcap accreditation](https://filab.fr/en/about-us/accreditations-en/materials-testing-nadcap-laboratory.md) notably covers: ✔️ Chemical analysis (ICP-OES) of critical metallic alloys (Al, Fe, Ni, Ti) ✔️ Metallography An international recognition that confirms our commitment to quality and reliability for the most demanding applications, particularly in the aerospace sector. ![](https://filab.fr/wp-content/uploads/2026/04/PNG-bleu-e1775737225243-1024x446.png) [Explore our accreditations](https://filab.fr/en/about-us/accreditations-en.md) ## Our FAQ What is the difference between Apparent Density and Tap Density? **Apparent Density** (ASTM B212) measures the volume occupied by the powder after free flow. **Tap Density** (ASTM B527) measures the volume after particles have been re-arranged by tapping, thus eliminating a large portion of the **interstitial voids**. How are the Carr Index and Hausner Ratio used? These two indicators are calculated from the results of ASTM B527 and B212. They allow for the indirect quantification of a powder's **flowability and cohesion**: the smaller the difference between apparent and tapped density, the better the flowability. What sample volume is required for a test at Filab? In accordance with the standard, a test sample of **100 grams** is generally recommended for use with a 100 mL cylinder. For high-density powders (such as Tungsten), smaller volumes may be adapted. Why is the number of taps important? ASTM B527 specifies a number of cycles (often 3000 or until volume stability) to ensure that packing is complete. An insufficient number of taps would lead to an **underestimation** of the true packing density. How to get a quote? To get a quote, you can contact our teams via our contact form, by phone, or by email. Simply send us your requirements (type of material, desired analysis, specific standard, urgency, sample quantity...). We will then send you a personalized technical and price proposal within **24-48 hours**.