S355N High Strength Low Alloy HSLA Steel
S355N high strength steel plate is a European standard low alloy high strength structural steel with excellent mechanical properties and a wide range of applications.
S355N low alloy steel material can still maintain high impact toughness under low temperature conditions, such as excellent impact toughness at -40℃, which enables it to maintain stable performance in harsh environments.
S355N high yield strength steel plate has good weldability and is suitable for a variety of welding processes. At the same time, S355N high strength low alloy steel can also be cut and processed by a variety of methods, such as flame cutting, laser cutting, etc., to meet the needs of different customers.
Chemical composition % of steel S355N (1.0545): EN 10025-3-2004
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Al | Cu | CEV |
| max 0.2 | max 0.5 | 0.9 - 1.65 | max 0.5 | max 0.03 | max 0.025 | max 0.3 | max 0.1 | max 0.12 | max 0.015 | max 0.05 | max 0.05 | max 0.02 | max 0.55 | max 0.45 |
Mechanical properties of steel S355N (1.0545)
| Nominal thickness (mm): | to 100 | 100 - 200 | 200 - 250 |
| Rm - Tensile strength (MPa) Flat and long products | 470-630 | 450-600 | 450-600 |
| Nominal thickness (mm): | to 16 | 16 - 40 | 40 - 63 | 63 - 80 | 80 - 100 | 100 - 150 | 150 - 200 | 200 - 250 |
| ReH - Minimum yield strength (MPa) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
| KV - Impact energy (J) longitud., (+N) | +20° 55 |
0° 47 |
-10° 43 |
-20° 40 |
| KV - Impact energy (J) transverse, (+N) | +20° 31 |
0° 27 |
-10° 24 |
-20° 20 |
| Nominal thickness (mm): | to 16 | 16 - 40 | 40 - 63 | 63 - 80 | 80 - 200 | 200 - 250 |
| A - Min. elongation Lo = 5,65 √ So (%) | 22 | 22 | 22 | 21 | 21 | 21 |
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