Mechanical properties
| Yield strength | Tensile strength | Elongation % min | Impact strength | Carbon equivalent | ||
|---|---|---|---|---|---|---|
| ReH min N/mm2 | Rm min N/mm2 | L0 = 5,65 √S0 specimen | 10mm x 10mm | (CEV) max | ||
| T≤16mm | T < 3mm | 3mm≤T≤40mm | T ≤ 40mm | ºC | J | |
| 355 | 510-680 | 470 - 630 | 20 | -20* | 27 | 0.45 |
For section sizes D/T < 15 (circular) and (B+H)/ 2T < 12.5 (square/rectangle) min elongation is reduced by 2%.
Chemical composition
% by mass
| C | Si | Mn | P | S |
|---|---|---|---|---|
| 0.22 | 0.55 | 1.60 | 0.030 | 0.030 |
Hybox® 355 is produced from fully killed steel - critical to formability and weldability.