EN 10210-3 standards mainly covers High-strength sand weather resistant steels for structural purposes, high strength steel has been a success story in heavy equipment and vehicles, offering lighter weight, wear and impact resistance, and hassle-free fabrication. These same benefits apply to structural engineering applications: longer spans, weight reduction for reduced foundation loads, and greater load-carrying capability are all possible thanks to high-strength steel.
Grade: S355MH/MLH, S420MH/MLH, S460MH/MLH, S620MH/MLH, S690MH/MLH
Circular Hollow Section Dimensions: O.D 21.3-1219mm T.K2.3-25mm
Square Hollow Section Dimensions: O.D 40*40mm-400*400mm T.K2.6-20mm
Rectangular Hollow Section Dimensions: O.D 50*30-500*300mm T.K 2.6-23.5mm
High Strength Steel:
S355MH/MLH, S420MH/MLH, S460MH/MLH Chemical Composition by mass %:
| Grade | Type | C max. |
Si max. |
Mn max. |
P max. |
S max. |
Cr max. |
Mo max. |
Ni max. |
Al total min. |
Cu max. |
No max. |
Ti max. |
V max. |
N max. |
| S355MH | FF | 0,16 | 0,50 | 1,60 | 0,030 | 0,025 | 0,30 | 0,10 | 0,50 | 0,020 | 0,55 | 0,090 | 0,060 | 0,10 | 0,015 |
| S355MLH | 0,025 | 0,020 | |||||||||||||
| S420MH | FF | 0,16 | 0,50 | 1,70 | 0,030 | 0,025 | 0,30 | 0,20 | 0,80 | 0,020 | 0,55 | 0,090 | 0,060 | 0,12 | 0,025 |
| S420MLH | 0,025 | 0,020 | |||||||||||||
| S460MH | FF | 0,16 | 0,60 | 1,70 | 0,030 | 0,025 | 0,30 | 0,20 | 0,80 | 0,020 | 0,55 | 0,090 | 0,060 | 0,12 | 0,025 |
| S460MLH | 0,025 | 0,020 |
S355MH/MLH, S420MH/MLH, S460MH/MLH Mechanical Properties:
| Grade | Minimum yield strength ReH MPa For specified thickness mm ≤16 >16≤40 >40≤65 |
Tensile strength Rm MPa for specified thickness ≤65mm |
Minimum elongationA % for specified thickness≤65mm Longitudinal Transverse |
|||
| S355MH | 355 | 345 | 335 | 450 to 610 | 22 | 19 |
| S355MLH | ||||||
| S420MH | 420 | 400 | 390 | 500 to 660 | 19 | 17 |
| S420MLH | ||||||
| S460MH | 460 | 440 | 430 | 530 to 720 | 17 | 15 |
| S460MLH | ||||||
S460QH/QLH, S620QH/QLH, S690QH/QLH Chemical Composition by mass %:
| Grade | Type | C max. |
Si max. |
Mn max. |
P max. |
S max. |
Cr max. |
Mo max. |
Ni max. |
Cu max. |
No max. |
Ti max. |
V max |
W max |
Zr max |
N max |
B max. |
| S460QH | FF | 0,25 | 0,80 | 1,70 | 0,025 | 0,015 | 1,50 | 0,70 | 2,00 | 0,50 | 0,06 | 0,05 | 0,16 | 1,50 | 0,15 | 0,020 | 0,0050 |
| S460QLH | 0,020 | 0,010 | |||||||||||||||
| S620QH | FF | 0,25 | 0,80 | 1,70 | 0,025 | 0,015 | 1,50 | 0,70 | 2,00 | 0,50 | 0,06 | 0,05 | 0,16 | 1,50 | 0,15 | 0,020 | 0,0050 |
| S620QLH | 0,020 | 0,010 | |||||||||||||||
| S690QH | FF | 0,25 | 0,80 | 1,70 | 0,025 | 0,015 | 1,50 | 0,70 | 2,00 | 0,50 | 0,06 | 0,05 | 0,16 | 1,50 | 0,15 | 0,020 | 0,0050 |
| S690QLH | 0,020 | 0,010 |
S460QH/QLH, S620QH/QLH, S690QH/QLH Mechanical Properties:
| S460QH | 460 | 440 | 400 | 550 to 720 | 550 to 720 | 500 to 670 | 17 | 15 |
| S460QLH | ||||||||
| S620QH | 620 | 580 | 560 | 700 to 890 | 700 to 890 | 650 to 830 | 15 | 13 |
| S620QLH | ||||||||
| S690QH | 690 | 650 | 630 | 770 to 940 | 720 to 930 | 710 to 900 | 14 | 12 |
| S690QLH |
Weathering Steel:
S355J0WH/J2WH/K2WH, S420K2WH, S460K2WH, S500K2WH Chemical Composition by mass %:
| Grade | Type | C max. |
Si max. |
Mn max. |
P max. |
S max. |
Cr | Mo max. |
Ni max. |
Al total min. |
Cu |
| S355J0WH | FF | 0,16 | 0.50 | 0.50 to 1,50 |
0.035 | 0.035 | 0,30 to 1,25 | 0.30 | 0.65 | 0,020 | 0,25 to 0,55 |
| S355J2WH | FF | 0,030 | 0,030 | 0,020 | |||||||
| S355K2WH | FF | 0.16 | 0,50 | 0.50 to 1.50 |
0,030 | 0,030 | 0,40 to 0,80 | 0,020 | |||
| S420K2WH | FF | 0,20 | 0.65 | 0.50 to 1.50 |
0,030 | 0,030 | 0,40 to 0,80 | 0.30 | 0.65 | 0,020 | 0,25 to 0,55 |
| S460K2WH | FF | 0.20 | 0.65 | 0.50 to 1.50 |
0,030 | 0,030 | 0,40 to 0,80 | 0.30 | 0.65 | 0,020 | 0,25 to 0,55 |
| S500K2WH | FF | 0,20 | 0,65 | 0,50 to 1,50 |
0,030 | 0,030 | 0,40 to 0,80 | 0.30 | 0,65 | 0,020 | 0,25 to 0,55 |
S355J0WH/J2WH/K2WH, S420K2WH, S460K2WH, S500K2WH Mechanical Properties:
| Grade | Minimum yield strength ReH MPa For specified thickness mm ≤16 ＞16≤40 40≤65 |
Tensile strength Rm MPa for specified thickness mm ≤3 >3≤65 |
Minimum elongation A % for specified thickness ≤65mm |
Minimum values of impact energy KV in J at a test temperature of -20℃ 0℃ |
||||
| S355J0WH | 355 | 345 | 335 | 510to680 | 470 to630 | 20 | 27 | |
| S355J2WH | 27 | |||||||
| S355K2WH | 40 | |||||||
| S420K2WH | 420 | 400 | 390 | 520 to680 | 520 to680 | 17 | 40 | |
| S460K2WH | 460 | 440 | 430 | 540 to720 | 530 to710 | 15 | ||
| S500K2WH | 500 | 480 | 460 | 590 to770 | 580 to760 | 14 | ||
EN 10210-3:
Hollow sections formed hot, making use of a thermomechanical forming process with grades from S275MH to S700MH and also MLH grades – these are formed into their final shape at an elevated temperature of at least 580°C, but below the normalizing temperature used for fully normalized grades (such as S355NH). Structural hollow sections to these grades will not have the same level of metallurgical homogeneity of fully normalized products.
Quenched and tempered steels from S460QH to S960QH and also QLH and QL1H grades – these steels achieve very high strength through a quench and temper process, first rapidly quenching from above the AC3 temperature to achieve a specific grain structure and then finally tempering at a defined temperature to achieve the desired properties.
Steel with improved atmospheric corrosion resistance, otherwise known as weathering steels from S355J0WH to S500K2WH.
Application:
High strength steel and weathering steel are widely used in structures, bridges, buildings, heavy transport, and process industries. If you have new bridges, steel structures, steel buildings, roofs, piers, and stadiums that requires long service life, structural hollow sections that made of high strength and weathering steels according to EN 10201-3 standard are a better choices, as it has a very good corossion-resitant ability.
