S355JH
Alloy SteelS355JH
EN 10210/10219 hollow-section steel S355JH.
Chemical Composition (%)
| C | 0.1 |
|---|---|
| SI | 0.15 |
| MN | 0.6 |
| P | 0.035 |
| S | 0.035 |
Mechanical Properties
Tensile:≥450 MPa;Yield:≥280 MPa;Elongation:≥20%
Chinese Standard
EN 10210
Equivalent Standards
EN S355JH
Applications
Structural tubing
Available Forms
Tube
Uses
Low-carbon grade used for welded structures, shafts, pins, bolts, nuts, seamless tubes and general engineering components where moderate strength and good weldability are required. Commonly supplied as bar, plate, sheet, tube and forging.
Heat Treatment
Typically normalized (880–920 °C, air cool) or carburized (900–930 °C) for case-hardening grades, then quenched and tempered at 150–200 °C.
Precautions
Weldable with standard procedures; preheat may be needed for thick sections or higher-carbon/ alloy grades. Protect from decarburization during heating (controlled atmosphere or protective coating).
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