EN 10219 is a European standard that outlines the requirements for cold-formed welded structural hollow sections made from non-alloy and fine-grained steels. This standard defines the mechanical properties, dimensions, and manufacturing tolerances of these sections, ensuring they meet specific quality and performance criteria.
The table below provides detailed information on material grades, their respective yield strengths, tensile strength ranges, and minimum elongation values based on thickness:
| Material | t<16 | 16>t<40 | t<3 | 3>t<40 | Min. Elongation (%) |
|--------------|------|---------|-----|--------|---------------------|
| S235JRH | 235 | 225 | 360-510 | 340-470 | 24 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 |
| S275J2H | 275 | 265 | 430-580 | 410-560 | 20 |
| S355J0H | 355 | 345 | 510-680 | 490-630 | 20 |
| S355J2H | 355 | 345 | 510-680 | 490-630 | 20 |
In addition to mechanical properties, EN 10219 also specifies manufacturing tolerances to ensure consistency and reliability in production. The following table outlines the acceptable deviations for various characteristics depending on the type of hollow section:
| Characteristic | Round Hollow Sections | Square and Rectangular Hollow Sections |
|--------------------------|---------------------------------------------------|-----------------------------------------------------------------|
| Outside Dimension | ± 1% with min ± 0.5mm and max ± 10mm | ± 1% with min of ± 0.5mm |
| Thickness (T) | T≤5mm: ±10%; T>5mm: ±0.5mm | T≤5mm: ±10%; T>5mm: ±0.5mm |
| Out-of-Roundness | 2% | - |
| Convexity | - | Max 0.8% with min 0.5mm |
| Squareness of side | - | 90° ± 1° |
| External Corner Profile | - | T≤6mm: 1.6T to 2.4T; 6
10: 2.4T to 3.6T |
| Twist | - | 2mm plus 0.5mm/m |
| Straightness | 0.2% of total length | 0.15% of total length |
| Mass | ±6% on individual length | ±6% on individual length |
These tolerances help ensure that the final products are suitable for use in structural applications where precision and performance are critical. Whether used in construction, engineering, or industrial projects, EN 10219-compliant hollow sections provide reliable strength and dimensional accuracy.Embedding Moulds
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