DIN EN 910 is a destructive weld-test standard that describes bend testing of welded joints in metallic materials. It is used to help reveal surface-breaking imperfections and to assess ductility by bending prepared weld specimens under controlled conditions.
If you need help matching your weld bend test requirement to the right fixture style, machine capacity, or the correct successor standard to cite, talk with our team.
DIN EN 910 (1996-05) — Zerstörende Prüfung von Schweißnähten an metallischen Werkstoffen – Biegeprüfungen
DIN EN 910 is the German adoption of the European standard EN 910 covering bend tests for welded joints in metallic materials.
This document has been withdrawn and is commonly encountered today as a legacy citation in older welding procedure and qualification documentation. Many current projects reference the ISO-based replacement instead.
Quick Definition
Document type: Destructive test method (bend testing of weld specimens).
What it’s used for: Bending weld specimens (e.g., root/face/side bend configurations) to reveal imperfections and/or assess ductility near the surface under tension during bending.
Common outcome: A pass/fail-type quality assessment based on the presence and severity of indications after bending (acceptance criteria are typically controlled by the governing welding qualification or product standard that cites the bend test).
What This Standard Covers
DIN EN 910 specifies how to perform bend tests on specimens taken from welded joints in metallic materials. It addresses bend test configurations used to evaluate different weld regions (for example, stressing the weld face, the weld root, or the weld cross-section in bending).
It is intended for fusion-welded joints in metallic products and is typically applied to butt-welded samples prepared for qualification testing, production sampling, or investigative testing.
Why This Standard Matters in Testing
Bend testing remains one of the most direct destructive checks for weld soundness because it can open up near-surface discontinuities when the specimen is placed in tension during bending.
From a lab and production perspective, DIN EN 910 influences how samples are cut and prepared, what fixture geometry is required, and what level of force and stroke control the test system must deliver to complete the bend without introducing test-artifact damage.
Common Materials, Product Types, or Applications Covered
DIN EN 910 applies broadly to welded joints in metallic materials. It is commonly encountered in workflows involving:
- Structural and pressure-retaining fabrications: plates and sections joined by qualified welding procedures.
- Manufacturing QA/QC: sampling plans or qualification coupons that require destructive confirmation of weld integrity.
- Procedure and welder qualification support: where a governing qualification standard calls up bend testing as an essential test.
Common Test or Verification Workflow
While the governing code or product standard typically defines the acceptance criteria, a typical DIN EN 910 bend-test workflow includes:
- Coupon selection and sectioning: removing specimens from the welded joint at the required orientation.
- Specimen preparation: machining/grinding to the required dimensions and surface condition (with care to avoid overheating or notches that can create false failures).
- Fixture setup and bending: performing the bend test using an appropriate guided-bend or wrap-around style fixture, applying load until the required bend is achieved.
- Post-bend evaluation: visual inspection of the tensioned surface for cracks, openings, or other relevant indications as defined by the citing requirement.
Practical caution: For quoting and setup, the most important inputs are specimen thickness/width, required bend configuration (root/face/side/longitudinal), and the bend fixture style and former/mandrel geometry required by the cited document set.
Equipment Commonly Used for This Standard
DIN EN 910 bend tests are commonly performed using a universal testing machine (UTM) or a dedicated bend-test press equipped with the correct bending fixture. The standard’s influence on equipment selection is mainly about applying controlled force through the correct geometry while keeping alignment stable.
Common equipment: Universal testing machine or hydraulic bend press; guided-bend / wrap-around bend fixtures; interchangeable formers/mandrels and supports; alignment tooling; safety guarding; force and displacement readout.
Supporting equipment: Abrasive saw or band saw for sectioning; milling/grinding for specimen prep; measurement tools for specimen dimensions; documentation tools for recording bend results and indications.
If you are selecting a test frame and need to confirm force capacity, fixture compatibility, and the right control/readout package for bend testing, you can request a detailed quote for a configuration matched to your specimen range.
How to Read This Designation or Revision
DIN EN 910: a German (DIN) adoption of a European (EN) standard numbered 910.
DIN EN 910:1996-05: indicates the edition/issue date (May 1996). In many technical documents, you may see this cited with the year only (1996) or with the month (1996-05).
Status note: DIN EN 910 is withdrawn. When updating internal procedures or purchase specifications, many organizations switch to the cited replacement standard rather than continuing to reference the withdrawn document.
Related Standards, Methods, or Frameworks
DIN EN 910 has been replaced by DIN EN ISO 5173 (bend tests for welds in metallic materials). If your customer, code, or contract documents reference DIN EN 910, it is common to check whether DIN EN ISO 5173 is acceptable as the controlling bend-test method for current work.
In qualification and compliance programs, bend testing is often one element within a larger weld qualification framework (procedure qualification records, welder qualifications, or product-specific fabrication requirements). Those governing documents typically define the number of specimens, acceptance criteria, and reporting needs.
Get help selecting bend-test equipment for weld qualification and QC
If you’re outfitting a lab for weld bend testing—especially when you need to cover multiple specimen sizes and bend configurations—we can recommend a practical machine-and-fixture package and the information to collect for a clean, standards-aligned setup. To compare configurations and pricing, request pricing for a bend-test system matched to your weld coupon range.