Interstitial-Free High-Strength (weich), Streckgrenzen-Band Re 180-220; vergleichbar HC180Y/HC220Y (EN 10268) bzw. HX180YD/HX220YD (EN 10346).
| Designation | RA IFHS-SOFT (IF180 TO 220) |
| Standard | EN 10268 / EN 10346 |
| Category | Höherfester IF-Stahl (IF-HS, weich) · Term explained |
| Density | 7,85 g/cm³ |
| Magnetism | ja |
| Comparable standard grade | HX180YD |
| C | ≤ 0,01 |
| Si | ≤ 0,30 |
| Mn | ≤ 0,90 |
| P | ≤ 0,08 |
| S | ≤ 0,03 |
| Al | ≥ 0,01 |
| Nb | ≤ 0,09 |
| Ti | ≤ 0,12 |
| Yield strength Re (min) | 180 N/mm² |
| Tensile strength Rm | 352 N/mm² |
| Elongation at break A (min) | 36 % |
| Young's modulus | 210 GPa |
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