ASTM E4-24 PDF
Name in English:
St ASTM E4-24
Name in Russian:
Ст ASTM E4-24
Original standard ASTM E4-24 in PDF full version. Additional info + preview on request
Full title and description
ASTM E4-24 — Standard Practices for Force Calibration and Verification of Testing Machines. This ASTM practice provides procedures and acceptance criteria for calibrating and verifying the force‑measuring systems of static and quasi‑static tensile and compression testing machines used for material testing and quality control.
Abstract
This document describes accepted procedures for force calibration and verification of testing machines, including methods that establish SI traceability and quantify measurement uncertainty. It covers common verification approaches — use of standard masses, equal‑arm balances with calibrated weights, and elastic force‑measuring standards (force‑proving instruments) — and specifies reporting and certificate requirements for the verified force‑measuring system. The practice clarifies the intended application (static or quasi‑static loading) and notes limitations (it is not a complete procurement specification nor does it address all safety issues).
General information
- Status: Active standard (current edition).
- Publication date: September 1, 2024 (designation ASTM E4-24 / 2024 edition).
- Publisher: ASTM International.
- ICS / categories: Mechanical testing / force verification (commonly listed under ICS 19.060 for mechanical testing).
- Edition / version: E4‑24 (2024 edition), replaces the 2021 edition.
- Number of pages: 16 pages.
Scope
These practices cover procedures for performing force calibration and verification of static or quasi‑static tensile and compression testing machines (with or without force indicators). The scope includes calibration/verification of associated force‑measuring systems such as dial gauges, recorders, and digital displays. Three principal verification/calibration approaches are described: (1) direct use of standard masses, (2) equal‑arm balance with standard weights, and (3) calibration using elastic force‑proving instruments; each approach requires documented traceability to SI units and stated measurement uncertainty. The standard is intended for verification of the force‑measuring system and does not by itself constitute a full safety or procurement specification.
Key topics and requirements
- Methods for force calibration: standard masses, equal‑arm balances, and elastic force‑proving instruments (force‑provers).
- Requirements for metrological traceability to SI units and documented calibration chains.
- Determination and reporting of measurement uncertainty for each calibration/verification method.
- Acceptance criteria and allowable deviations for force‑measuring systems (including notes on how uncertainty interacts with allowable error).
- Calibration/verification procedures for associated indicators and recorders (dial, chart, digital displays).
- Reporting, certificate contents, and documentation requirements for calibration results and verification records.
- Limitations: practice applies to static/quasi‑static conditions and does not fully cover dynamic/high‑speed effects or all safety aspects.
Typical use and users
Primary users include materials testing laboratories, calibration and metrology laboratories, manufacturers and service providers of testing machines, quality/inspection departments, and third‑party accreditation bodies performing machine verification or calibration services. Laboratories that perform calibrations against this practice commonly align procedures with accreditation requirements (for example ISO/IEC 17025).
Related standards
ASTM E4-24 is frequently used alongside international and metrology standards such as ISO 7500‑1 (verification and calibration of the force‑measuring system of static uniaxial testing machines) and ISO 376 (calibration of force‑proving instruments). Laboratories and calibration bodies will also reference ISO/IEC 17025 for accreditation of their calibration activities. The 2024 edition of E4 supersedes ASTM E4‑21.
Keywords
force calibration; force verification; testing machines; tensile testing; compression testing; force‑proving instruments; measurement uncertainty; SI traceability; calibration certificate; ASTM E4-24.
FAQ
Q: What is this standard?
A: ASTM E4‑24 is the 2024 edition of the ASTM practice that defines recommended procedures for force calibration and verification of static and quasi‑static tensile and compression testing machines.
Q: What does it cover?
A: It covers methods to calibrate and verify the force‑measuring system of testing machines (direct masses, equal‑arm balances, and elastic force‑proving instruments), requirements for SI traceability, measurement uncertainty statements, and documentation/certificate contents. It applies to static or quasi‑static tests and associated force indicators.
Q: Who typically uses it?
A: Test and calibration laboratories, manufacturers and maintainers of materials testing machines, quality assurance and inspection teams, and accreditation bodies use this practice to ensure consistent, traceable force measurements.
Q: Is it current or superseded?
A: Current — the E4‑24 (2024) edition is the active edition and replaces the prior E4‑21 edition. Users should confirm they are using the E4‑24 text for compliance and calibration work.
Q: Is it part of a series?
A: ASTM E4 is a long‑standing ASTM practice with multiple previous editions; it is commonly used together with related international standards (for example ISO 7500‑1 and ISO 376) and with laboratory accreditation standards such as ISO/IEC 17025.
Q: What are the key keywords?
A: Force calibration, force verification, testing machine calibration, force‑prover, measurement uncertainty, SI traceability, tensile/compression testing, calibration certificate.