DIN EN ISO 8492 2014-03 PDF

Full title and description

STB DIN EN ISO 8492:2014-03 — Metallic materials — Tube — Flattening test (ISO 8492:2013); German version EN ISO 8492:2013. This national adoption reproduces the ISO method for assessing the ability of metallic tubes of circular cross‑section to undergo plastic deformation by flattening and for revealing manufacturing defects in tubes.

Abstract

Specifies a laboratory flattening (ring‑fold) test for circular metallic tubes to check ductility and detect defects. Applicable to tubes with outside diameter up to 600 mm and wall thickness up to 15 % of the outside diameter; defines principle, equipment, specimen, procedure and test report requirements.

General information

• Status: Current (national adoption of EN ISO 8492:2013).
• Publication date: ISO publication: 5 November 2013 (ISO 8492:2013); DIN national adoption/publication: March 2014 (DIN EN ISO 8492:2014-03).
• Publisher: Deutsches Institut für Normung (DIN) — German version of EN ISO 8492:2013; original International Standard published by ISO.
• ICS / categories: 77.040.10 — Mechanical testing of metals.
• Edition / version: ISO: Edition 3 (2013); National designation: DIN EN ISO 8492:2014-03.
• Number of pages: DIN national version: 7 pages; ISO published version: 2 pages (format/layout differences between national and international publications).

Scope

Defines a flattening (ring‑fold) test method to determine the suitability of metallic tubes (circular cross‑section) for plastic deformation by flattening and to reveal defects. Applicable to tubes with outside diameter ≤ 600 mm and wall thickness ≤ 15 % of outside diameter; product standards may further restrict the applicable diameter/thickness range. The standard covers symbols, principle, testing equipment, test piece, procedure and test report items.

Key topics and requirements

• Principle of the flattening (ring‑fold) test: controlled flattening to observe cracking or defects.
• Testing equipment and jaws/fixtures suitable for the tube size and material.
• Specification of test specimen (length, orientation) and preparation.
• Test procedure: flattening steps, angles, and observation criteria for failure or unacceptable defects.
• Limits of applicability: outside diameter up to 600 mm; wall thickness up to 15 % of outside diameter.
• Required content of the test report (identification, test conditions, results and observations).

These topics are drawn from the ISO specification and its national adoption.

Typical use and users

Used by tube manufacturers, quality and inspection laboratories, purchasers and end‑users of metallic tubes, certification and testing bodies, and standards committees to verify ductility, conformity to product standards and to detect manufacturing defects in tubes intended for mechanical, structural or pressure applications.

Related standards

Closely related ISO/EN standards in the same series for tube testing (e.g., ISO 8493, ISO 8494, ISO 8495 and other tube‑test methods) and product standards for specific tube types; the DIN national entry notes that this document replaces the earlier DIN EN ISO 8492:2004 version and is connected with product standards such as EN/ DIN tube specifications.

Keywords

flattening test; ring‑fold test; tube testing; metallic tubes; ductility test; defect detection; ISO 8492; DIN EN ISO; mechanical testing of metals; ICS 77.040.10.

FAQ

Q: What is this standard?

A: It is the ISO method (adopted as DIN EN ISO 8492:2014-03) for the flattening (ring‑fold) test of metallic tubes to assess ductility and reveal defects.

Q: What does it cover?

A: The standard covers test principle, required equipment, specimen preparation, test procedure and reporting requirements for flattening tests on circular metallic tubes (OD ≤ 600 mm, thickness ≤ 15 % of OD).

Q: Who typically uses it?

A: Tube manufacturers, independent test laboratories, quality assurance and inspection departments, procurement/specification engineers and certification bodies involved with metallic tubing.

Q: Is it current or superseded?

A: The ISO original (ISO 8492:2013) is the current International Standard published in November 2013; the DIN national adoption (DIN EN ISO 8492:2014-03) published in March 2014 supersedes the earlier 2004 national version. Users should check their national standards body for the latest status.

Q: Is it part of a series?

A: Yes — it belongs to a set of ISO/EN tube testing methods (other ISO 84xx standards) covering different mechanical tests for tubes; it is maintained by ISO/TC 164/SC 2 (ductility testing).

Q: What are the key keywords?

A: Flattening test, ring‑fold, tube, metallic materials, ductility, defect detection, mechanical testing of metals, ISO 8492, DIN EN ISO.