EN-Construction-Product-Celsius hot finished hollow sections - Celsius S420NH | Key features
- Fully normalized structural hollow sections, compliant with EN 10210:S420NH
- High strength steel enabling up to 17% weight saving in certain applications
- Normalized fine grain steel, so free of internal stresses and with a minimum strength of 420N/mm2 allowing the highest fabrication factors and enabling material cost savings and lighter structures
- Available in a wide size range of circular (42.4 x 3.2mm to 5.8 x 16mm) square (40 x 40 x 3.2mm to 400 x 400 x 16mm) rectangular (50 x 30 x 3.2mm to 500 x 300 x 16mm) hollow sections
- Tight corner radii (<2T) exceeding the standard - enhancing the product’s aesthetic appeal whilst avoiding the risk of brittle fracture which occurs in some cold formed products
- Excellent dimensional consistency, high levels of formability, suitable for galvanising and, because the steel is fully-killed, excellent weldability
- Fully compliant with CE marking and certified as suitable for all structural applications; overcomes design risks associated with other forms of hollow sections
- Certified as suitable for mechanical applications, especially those involving cyclical loading
- Suitable for low temperature applications (40J @ -20°C)
- Batch-tested to give the properties of the specific delivered material; full test certification supplied
- Clearly marked as Celsius® S420NH, and supplied with a 3.1 test certificate for the reassurance of batch traceability
- Full technical support available
EN-Construction-Product-Celsius hot finished hollow sections - Celsius S420NH | Mechanical properties
High strength hot finished hollow sections suitable for all construction and mechanical applications. Celsius® 420 is suitable for all internal and external applications to BS5950-1:2000, EN1993 and BS5400.
Celsius 420 hollow sections are supplied with a minimum yield strength of 420 N/mm2 and comply fully with the European Standard for hot finished structural hollow sections, EN10210:S420NH.
| Yield strength ReH min N/mm2; |
Tensile strength Rm N/mm2 |
Elongation % min L0 = 5,65 √S0 specimen |
Impact strength 10mm x 10mm |
Carbon equivalent (CEV) max |
|
|---|---|---|---|---|---|
| T ≤ 16mm | ≤ 65mm | T | ºC | J | |
| 420 | 520-680 | 19 | -20 | 40 | 0.45 |
Chemical composition % by mass
| C max | Si max | Mn | P max | S max | Nb max | V ma | Al total min | Ti max | Cr max | Ni max | Mo max | Cu max | N max |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.20 | 0.60 | 1.00 1.70 |
0.035 | 0.030 | 0.050 | 0.20 | 0.020 | 0.03 | 0.30 | 0.80 | 0.10 | 0.70 | 0.025 |
Celsius 420 is produced from fully-killed steel – critical to formability and weldability.
Inspection and testing
Celsius hollow sections EN10210:S420NH are subject to specific inspection and testing and are supplied with an inspection certificate type 3.1 to EN10204.
EN-Construction-Product-Tubes-Celsius-Dimensional tolerancesTSUK
Dimensional tolerances EN10210: Part 2
Celsius tubes are manufactured to the tolerances defined in EN 10210: Part 2. Tighter tolerances are available on request and if you require specific tolerances in excess of this, please contact us.
| Circular/Ellipticals | Square/Rectangular | |
|---|---|---|
| Outside dimension (D B and H) |
Circular ±1% with a min of ±0.5mm and maximum of ±10mm Ellipticals ±1% with a min of ±0.5mm (The permitted tolerance is twice the value for H<250) |
±1% with a min of ±0.5mm |
| Thickness (T) | -10% Note: Positive deviation limited by mass tolerance |
-10% Note: Positive deviation limited by mass tolerance |
| Squareness of side | - | 90 degrees ±1 degree |
| External corner profile | - | 2T max at each corner* (EN10210 has 3T max) |
| Concavity/convexity (x) | - | – ±1% of the side, measured independently of the tolerance on the outside dimension |
| Twist (V) | Ellipticals: 2mm plus 0.5mm/m max (The permitted tolerance is twice the value for H<250) |
2mm plus 0.5mm/m max Section is placed on a flat surface with one end held flat. At the other end the height difference of the two lower corners is taken |
| Mass (M) | ±6% on individual lengths | ±6% on individual lengths |
| Straightness | Maximum 0.2% of the total length and 3mm over every 1m length Ellipticals: The permitted tolerance is twice the value for H<250 |
Maximum 0.2% of total length and 3mm over every 1m length |
| Length | +150mm/-0mm | +150mm/-0mm |
| Out-of-roundness (O) | Circular 2% for hollow sections having a diameter to thickness ratio not exceeding 100 |
- |
* Unless shown otherwise
EN-Construction-Product-Celsius hot finished hollow sections - Celsius S420NH | Dimensions
Celsius S420NH is available across the size range indicated in the tables, minimum order quantities may apply. Intermediate sizes may also be available. For further information or specific requests, please contact us.
Celsius S420NH is available in standard lengths from 6.0m to 14.5m for sizes up to 100/100 or 120/80 and up to 15.3m for all other sizes.
| Circular hollow sections (CHS) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| mm | 3.2 | 3.6 | 4 | 5 | 6.3 | 8 | 10 | 12.5 | 16 |
| 42.4 | |||||||||
| 48.3 | |||||||||
| 60.3 | |||||||||