ASTM RR-B09-1000 1975 PDF

Full title and description

St ASTM RR-B09-1000 (B0330) — "Interlaboratory Study to Establish Precision Statements for ASTM Standard: Tungsten Powder Round‑Robin Particle Size Distribution by Sieving." This research report documents the results of a round‑robin (interlaboratory) program intended to produce precision and reproducibility statements for the referenced ASTM test method.

Abstract

This research report (RR:B09-1000 / B0330) summarizes an interlaboratory study carried out to establish precision statements for the ASTM particle‑size test procedure applied to tungsten powder by sieving. The study collected results from multiple laboratories (the ASTM catalog entry notes participation by forty‑nine laboratories for the principal round‑robin) and presents statistical estimates of repeatability and reproducibility intended to support the referenced ASTM test method.

General information

• Status: Report published / cataloged and available from ASTM (catalog shows the research report entry; third‑party catalog listings describe it as active).
• Publication date: Study dated 1975 (report commonly referenced with 1975) — research report approval recorded as January 1, 1976 in the ASTM catalog.
• Publisher: ASTM International (Research Report series, Committee/Designation RR:B09‑1000; developed under Subcommittee B09.03).
• ICS / categories: Metallurgy — Powder metallurgy / metal powders (ICS group 77, subgroups for powder metallurgy and related test methods).
• Edition / version: Original research report designation RR‑B09‑1000 (associated with ASTM test method designation B0330 / B330).
• Number of pages: Not specified in the public ASTM catalog entry; full PDF/text is available for purchase from ASTM (page count shown on the purchasable PDF may be provided with the product).

Scope

The report documents an interlaboratory round‑robin using tungsten powder to determine the precision (repeatability) and reproducibility of particle‑size distribution results obtained by sieving according to the referenced ASTM test method. It covers test sample distribution to participating laboratories, prescribed sieving procedures as used in the study, data collection, and statistical evaluation used to derive precision statements suitable for inclusion with or referenced by the ASTM test method. The work was developed under the ASTM B09 committee activities for metal powders and related standards.

Key topics and requirements

• Interlaboratory (round‑robin) study design and organization for particle‑size testing.
• Sieving procedures and sample handling specifics as applied to tungsten powder.
• Statistical analysis to derive precision (repeatability) and reproducibility values (methods aligned with ASTM interlaboratory practice expectations).
• Application to tungsten and similar refractory metal powders; implications for quality control and specifications for powder producers and users.

Typical use and users

Primary users include industrial and commercial powder‑metallurgy laboratories, tungsten and refractory metal powder manufacturers, quality assurance and testing laboratories, research laboratories working on metal powders and particulate characterization, and ASTM committee members who reference interlaboratory precision statements when maintaining or revising test methods. The report is used as supporting evidence for test‑method precision claims and for interpreting interlaboratory variability in routine testing.

Related standards

Related ASTM standards and documents include the referenced test method (B0330 / B330) for particle‑size determination by sieving and other B09 committee standards for metal‑powder test methods and sampling (examples include ASTM standards covering sieve analysis of metal powders, sampling, Hall flowmeter flow testing, and related particle‑size or powder characterization methods). The ASTM research‑report series for committee B09 contains several companion interlaboratory studies for related particle‑size methods.

Keywords

RR‑B09‑1000, B0330, tungsten powder, particle size distribution, sieving, interlaboratory, round‑robin, precision, reproducibility, powder metallurgy, ASTM B09.

FAQ

Q: What is this standard?

A: This is an ASTM research report (RR:B09‑1000, also identified as B0330 in ASTM material), a round‑robin/interlaboratory study intended to establish precision statements for an ASTM particle‑size test method applied to tungsten powder. It is a research report rather than a mandatory specification.

Q: What does it cover?

A: It covers the design and results of an interlaboratory sieving study — distribution of samples to participant laboratories, the sieving/test procedures used in the study, the collected data set, and the statistical analysis that produced repeatability and reproducibility estimates for the referenced test method.

Q: Who typically uses it?

A: Users include powder‑metallurgy test laboratories, tungsten/refractory powder producers, QA/ QC personnel, standards committees, and researchers who need validated precision statements to interpret interlaboratory variability or to support method validation.

Q: Is it current or superseded?

A: The document is a historical ASTM research report (study dated 1975 with catalog approval recorded as January 1, 1976) and is cataloged by ASTM as RR‑B09‑1000. Research reports are typically retained as archival precision studies; users should consult the current ASTM catalog or the relevant B09 committee publications to confirm whether newer precision statements or updated interlaboratory studies exist.

Q: Is it part of a series?

A: Yes — it is part of the ASTM research‑report series for Committee B09 (Metal Powders and Metal Powder Products). The B09 research report series contains multiple round‑robin studies and precision‑statement reports for related test methods.

Q: What are the key keywords?

A: Tungsten powder, particle size distribution, sieving, interlaboratory study, round‑robin, precision statement, reproducibility, powder metallurgy, ASTM RR:B09‑1000, B0330.