Higher strength steels
Higher strength steels are structural materials designed to carry greater loads than conventional structural steels while retaining useful ductility. They are used for load-bearing structures and components where higher strength can support efficient material use and durable fabricated designs.
| Grade | Material no. | C | Al | Si | P | S | Ti |
|---|---|---|---|---|---|---|---|
| H 220 BD | 1.0353 | — | — | — | — | — | — |
| H 180 BD | 1.0354 | — | — | — | — | — | — |
| H300BD | 1.0445 | — | — | — | — | — | — |
| HX 160 YD | 1.0910 | ≤0,01 | ≤0,10 | ≤0,15 | 0,06 | 0,025 | ≤0,12 |
| H 180 BD | 1.0914 | ≤0,10 | ≤0,1 | ≤0,50 | 0,06 | 0,025 | ≤0,12 |
| H 220 BD | 1.0919 | ≤0,10 | ≤0,1 | ≤0,50 | 0,08 | 0,025 | ≤0,12 |
| H 180 YD | 1.0921 | ≤0,01 | ≤0,1 | ≤0,20 | 0,06 | 0,025 | ≤0,12 |
| H 220 YD | 1.0923 | ≤0,01 | ≤0,1 | ≤0,20 | 0,08 | 0,025 | ≤0,12 |
| H 260 BD | 1.0924 | ≤0,10 | ≤0,1 | ≤0,50 | 0,1 | 0,025 | ≤0,12 |
| H 260YD | 1.0926 | ≤0,01 | ≤0,1 | ≤0,25 | 0,1 | 0,025 | ≤0,12 |
| HX 300 YD | 1.0927 | ≤0,015 | ≤0,1 | ≤0,30 | 0,1 | 0,025 | ≤0,12 |
| HX260LAD | 1.0929 | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,12 |
| HX300BD | 1.0930 | ≤0,11 | ≤0,01 | ≤0,50 | 0,12 | 0,025 | ≤0,12 |
| HX300LAD | 1.0932 | ≤0,11 | ≤0,01 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| HX340LAD | 1.0933 | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| HX380LAD | 1.0934 | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| HX420LAD | 1.0935 | ≤0,11 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| HX340BD | 1.0945 | ≤0,11 | ≤0,1 | ≤0,50 | 0,12 | 0,025 | ≤0,12 |
| HX460LAD | 1.0990 | ≤0,15 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
| HX500LAD | 1.0991 | ≤0,15 | ≥0,015 | ≤0,50 | 0,03 | 0,025 | ≤0,15 |
Standards covering this category
13Property ranges
13| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| Rm | N/mm² | 450 | 490 | 1 |
| Re | N/mm² | 260 | 325 | 1 |
| A5 | % | 21 | 28 | 1 |
| Z | % | 57 | 65 | 1 |
| KCU | kJ/m² | 590 | 1200 | 1 |
| rho | g/cm³ | 7.85 | 7.85 | 20 |
| E | GPa | 162 | 181 | 1 |
| alpha | 10^-6/K | 13 | 16.2 | 1 |
| cp | J/(kg·K) | 470 | 470 | 1 |
| Ac1 | °C | 736 | 736 | 1 |
| Ac3 | °C | 920 | 920 | 1 |
| Ar3 | °C | 791 | 791 | 1 |
| Ar1 | °C | 641 | 641 | 1 |
Derived from 20 grades in this category with a recorded value.
Composition range
8| Property | Unit | Min | Max | Grades |
|---|---|---|---|---|
| C | % | 0.01 | 0.15 | 17 |
| Al | % | 0.01 | 0.1 | 17 |
| Si | % | 0.15 | 0.5 | 17 |
| P | % | 0.03 | 0.12 | 17 |
| S | % | 0.025 | 0.025 | 17 |
| Ti | % | 0.12 | 0.15 | 17 |
| Mn | % | 0.6 | 1.7 | 17 |
| Nb | % | 0.09 | 0.09 | 17 |
Derived from 17 grades in this category with a recorded value.