ISO 6507-2-2018 PDF

Full title and description

ISO 6507-2:2018 — Metallic materials — Vickers hardness test — Part 2: Verification and calibration of testing machines. This part of ISO 6507 specifies procedures for direct and indirect verification and calibration of Vickers hardness testing machines, the Vickers indenter and the diagonal measuring system used to determine Vickers hardness values in accordance with ISO 6507‑1.

Abstract

ISO 6507-2:2018 defines a direct method for calibration and verification of the test force, indenter geometry and diagonal-measuring system and an indirect method using calibrated reference blocks for overall machine checks. It applies to bench and portable Vickers hardness testers (but not to machines using different measurement principles) and requires traceability of instruments to national standards.

General information

• Status: Published
• Publication date: January 2018
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 77.040.10 (Mechanical testing of metals)
• Edition / version: 4 (ISO 6507-2:2018)
• Number of pages: 18

(Bibliographic and lifecycle details as published by ISO.)

Scope

Specifies requirements and procedures for verifying and calibrating Vickers hardness testing machines, including calibration of applied test force across the working range, verification of the diamond-pyramid indenter geometry and mounting, calibration/verification of the diagonal-measuring system (for each magnification and scale orientation), and verification of the testing cycle. The standard describes both direct verification (machine, indenter and measuring system) and indirect verification (use of reference blocks calibrated in accordance with ISO 6507-3) and gives guidance on measurement uncertainty and environmental conditions for verification.

Key topics and requirements

• Calibration of test force over the machine working range, with measurements at multiple plunger positions unless force is shown position-independent.
• Verification of the Vickers indenter geometry and mounting, with specified angular and tip-junction tolerances and requirement for a valid indenter calibration certificate.
• Calibration and verification of the diagonal measuring system at each magnification/scale orientation using a stage micrometer, with stated maximum permissible measurement errors and uncertainty limits.
• Verification of the testing cycle timing and adherence to timing limits given in ISO 6507-1.
• Indirect verification using calibrated reference blocks (ISO 6507-3) with specified hardness ranges, number of indentations and acceptance criteria for mean diagonal differences.
• Requirement for traceability of verification instruments to national standards and for reporting of calibration/verification results including uncertainty estimation.

Typical use and users

Used by calibration laboratories, metallurgical and materials testing laboratories, quality/inspection departments in manufacturing (automotive, aerospace, heavy industry, metalworking), equipment manufacturers, and conformity assessment bodies. Typical users perform routine verification/calibration of Vickers hardness testers, prepare calibration certificates and ensure traceability and compliance with laboratory accreditation requirements.

Related standards

Closely related to ISO 6507-1 (Vickers hardness test — Test method) and ISO 6507-3 (reference blocks). Other related documents include ISO 376 (force-proving devices) for force calibration and ISO/IEC 17025 for laboratory competence and calibration reporting practices.

Keywords

Vickers hardness, hardness tester verification, calibration, indenter verification, diagonal measuring system, reference blocks, test force, measurement uncertainty, traceability, metallic materials.

FAQ

Q: What is this standard?

A: ISO 6507-2:2018 is the part of the ISO 6507 series that specifies how to verify and calibrate Vickers hardness testing machines, including the indenter and the measurement optics/systems used to measure indentation diagonals.

Q: What does it cover?

A: It covers direct calibration/verification procedures (test force, indenter geometry, diagonal measuring system, testing cycle) and indirect verification using calibrated reference blocks, plus requirements for traceability, uncertainty estimation and environmental conditions for verification.

Q: Who typically uses it?

A: Calibration and testing laboratories, quality and inspection units in industry, manufacturers of hardness testers, and accreditation bodies use the standard to ensure the accuracy and traceability of Vickers hardness measurements.

Q: Is it current or superseded?

A: The 2018 edition (ISO 6507-2:2018) is the current published edition replacing the 2005 edition; ISO documents are subject to periodic review (typically every five years).

Q: Is it part of a series?

A: Yes — ISO 6507 is a multi-part series on the Vickers hardness test. Part 1 covers the test method (ISO 6507-1) and Part 3 covers reference blocks (ISO 6507-3); Part 2 addresses verification and calibration of testing machines.

Q: What are the key keywords?

A: Vickers, hardness, calibration, verification, indenter, diagonal measurement, reference blocks, test force, traceability, uncertainty.