EN 910 is a destructive weld test standard for bend testing welded joints in metallic materials. It is used to reveal surface-breaking and near-surface imperfections on the tension side during bending and to assess ductility of the weld area.
Because bend testing is often referenced by welding procedure qualification (WPQR) and welder qualification workflows, test labs and QA teams typically need to align specimen selection, bend type (root/face/side), and acceptance reporting to the exact contract or code citation. If you need help mapping a drawing, WPS/PQR, or customer requirement to the right bend-test setup, you can talk with our team.
EN 910 full standard title
EN 910 is titled “Destructive tests on welds in metallic materials — Bend tests” (commonly published as national adoptions such as DIN EN 910, BS EN 910, etc.).
Quick definition
EN 910 defines bend test approaches for welded joints in metallic materials, where prepared specimens are bent to place a selected surface in tension so discontinuities can be exposed and evaluated.
What this standard covers
EN 910 is focused on bend testing of welds. In practice, it addresses how bend specimens are prepared from welded joints and how they are bent using common bend tooling arrangements (for example, guided bends using a former/mandrel or roller-type bending), so that imperfections on or near the surface under tension can be revealed.
EN 910 is not a welding quality specification by itself; it is a mechanical test method used when a fabrication, qualification, or product standard requires bend testing and defines the acceptance criteria elsewhere.
Why this standard matters in testing
Bend tests are widely used because they can quickly expose lack of fusion, slag inclusions near the surface, cracking tendencies, and other discontinuities that may not be obvious in visual inspection alone. When EN 910 is referenced, consistent specimen preparation and consistent bending geometry are key to getting comparable results across shifts, sites, and suppliers.
For purchasing and quoting, the biggest practical driver is usually the specimen size and thickness range, because those factors determine the bend fixture capacity, support span, and the force required from the test frame or press.
Common materials, product types, or applications covered
EN 910 is used for welded joints in metallic materials across common fabrication sectors (for example, structural steelwork, pressure-related fabrication, general metal fabrication, and manufacturing that qualifies welding procedures). It is most often applied to butt weld test coupons or welded product samples where bend testing is specified as part of qualification or inspection.
Common test or verification workflow
In a typical EN 910-driven workflow, welded coupons or welded product sections are sampled, bend specimens are extracted and prepared, and then specimens are bent so that a selected surface (root, face, or side) is placed in tension. The bent surface is then evaluated for relevant indications as required by the governing acceptance standard (often a separate welding qualification or product specification).
Common bend specimen intents: Root bend (evaluate root side), face bend (evaluate face/cap side), side bend (evaluate through-thickness/weld cross-section).
Equipment commonly used for this standard
EN 910 bend testing is commonly performed using a mechanical test frame or press with bend tooling suited to the specimen thickness and bend configuration. The method is tooling-driven: the fixture geometry and how the specimen is supported and wrapped controls the severity and repeatability of the bend.
Common equipment: Bend test fixture (guided-bend former/mandrel type or roller-type), compression platen set or dedicated bend-test frame, a universal testing machine (UTM) or hydraulic press with adequate force capacity, specimen measurement tools, and basic inspection aids for post-bend evaluation.
If you are selecting a UTM/press and bend fixture for a specific thickness range or need multiple bend configurations (root/face/side) on one platform, you can request a detailed quote for an equipment package matched to your specimen sizes and throughput.
How to read this designation or revision
“EN 910” is the European Standard designation and is commonly referenced with a year (for example, EN 910:1996) and/or with a national adoption prefix (for example, DIN EN 910). When a drawing, WPS/PQR, or contract calls out EN 910, the cited year/edition and any national adoption can matter for lab setup and reporting expectations.
In many procurement and QA environments, older EN 910 citations may also be encountered in legacy documents even where newer, ISO-aligned bend-test standards are now used; matching the exact cited document on the job is the safest approach.
Related standards, methods, or frameworks
EN 910 is closely associated with the later ISO-aligned bend test standard used for destructive bend testing of welds in metallic materials (commonly cited as EN ISO 5173). Welding procedure and welder qualification standards frequently reference bend testing as part of qualification, but acceptance criteria and sampling rules are typically defined in those governing documents rather than inside the bend-test method itself.
Talk through your bend-test setup
If you want to confirm fixture type (former vs. roller), required force capacity, or which bend configurations you need to cover your welding qualifications, contact our team and share your specimen thickness range and the exact standard citation used on your job.