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 specifies mechanical properties, dimensions, and tolerances to ensure the quality and performance of these steel sections in various construction applications.
The table below provides key details about different steel grades, including their yield strength, tensile strength, and minimum elongation values based on thickness ranges:
| 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 material specifications, EN 10219 also defines manufacturing tolerances for different types of hollow sections. These tolerances are essential to ensure dimensional accuracy and consistency during production. The following table outlines typical tolerances for round, square, and rectangular hollow sections:
| Characteristic | Round Hollow Sections | Square and Rectangular Hollow Sections |
|------------------------------|--------------------------------------------------------|-----------------------------------------------------------|
| Outside Dimension | ±1% with min ±0.5mm and max ±10mm | ±1% with min ±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 < T ≤ 10mm: 2.0T to 3.0T
T > 10mm: 2.4T to 3.6T |
| Twist | - | 2mm plus 0.5mm/m |
| Straightness | 0.2% of total | 0.15% of total |
| Mass | ±6% on individual length | ±6% on individual length |
These tolerances help maintain the structural integrity and usability of the hollow sections in real-world applications. By adhering to EN 10219, manufacturers can produce high-quality steel sections that meet international standards and customer expectations.
Plastic Mold
Precision Plastic Mold,Injection Molding Large Parts,Custom Plastic Molds ,Pre-Deformation Plastic Mold
Dandong Jinggong Heat Preservation Appliance Factory , https://www.jgplastic.com