S355 grade steel is a medium tensile, low carbon manganese steel which is readily weldable and possesses good impact resistance (also in sub-zero temperatures).
This material is commonly supplied in the untreated or normalised condition. Machinability is similar to that of mild steel.
This grade was first specified as the European EN10025 standard and later published by the British Standards Institute as BS EN 10025, S355, S355J2 and S355J2+N. These superseded the BS4360.
High Peak Steels stock S355 in black steel round bar.
UK Standard S355 | European Grades EN14A | 150M19
to talk to one of our advisors for more information, or email us at [email protected]
| Product | Min size | Max size |
|---|---|---|
 | 20mm dia | 330mm dia |
 | ||
 | ||
 |
| C | Si | Mn | S | P | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | ||||||||
| Max | 0.22 | 0.55 | 1.6 | 0.03 | 0.03 |
| Unit | Size Range mm | Yield N/mm2 | 0.2% proof N/mm2 | UTS (Rm) N/mm2 | Elong (A) % | Red of Area (Z) % | Hardness HB | Impact test (KV) J |
|---|---|---|---|---|---|---|---|---|
| Normalised (min) | S355J2+N 16mm dia | 345 | 470 | 22 | 27 | |||
| Normalised (max) | S355J2+N 40mm dia | 630 | ||||||
| Normalised (min) | S355J2+N 100mm dia | 295 | 450 | 18 | 27 | |||
| Normalised (max) | S355J2+N 150mm dia | 600 | ||||||
| Normalised (min) | S355J2G3 250mm dia | 265 | 400 | 23 | 25 | |||
| Normalised (max) | S355J2G3 500mm dia |
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