UNI steel grades — 671 designations — Page 8
Every grade designated under UNI, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute.
Also known as
671 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| Fe430D(FF) | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| Fe460-1KG | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe460-1KG | 1.0445 | Higher strength steels | — | 12 |
| Fe460-1KW | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe480 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe480 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe490 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe490 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe490 | 1.0533 | Others | — | 3 |
| Fe510 | 1.0580 | Unalloyed structural steels | ≤ 0.22 | 10 |
| Fe510 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe510 | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510-1KG | 1.0436 | Fine-grain structural steels | 0.15–0.2 | 14 |
| Fe510-1KG | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510-1KT | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510-1KW | 1.0473 | Heat-resistant structural steels | 0.1–0.22 | 10 |
| Fe510-1KW | 1.0436 | Fine-grain structural steels | 0.15–0.2 | 14 |
| Fe510-1KW | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510-2KG | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510-2KT | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510-2KW | 1.0481 | Heat-resistant structural steels | 0.08–0.2 | 17 |
| Fe510B | 1.0045 | Unalloyed structural steels | ≤ 0.24 | 17 |
| Fe510B | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe510B | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510C | 1.0553 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510C | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe510C | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510C1K1 | 1.8945 | Weathering steels | ≤ 0.12 | 16 |
| Fe510C2K1 | 1.8959 | Weathering steels | ≤ 0.16 | 10 |
| Fe510CFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe510CFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510D | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe510D | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe510D | 1.0579 | Unalloyed structural steels | ≤ 0.2 | 3 |
| FE510D | 1.0577 | Unalloyed structural steels | ≤ 0.2 | 11 |
| Fe510D1K1 | 1.8946 | Weathering steels | ≤ 0.12 | 4 |
| Fe510D2K1 | 1.8963 | Weathering steels | ≤ 0.16 | 9 |
| Fe52 | 1.0841 | Unalloyed structural steels | — | 6 |
| Fe52BFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe52BFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe52CFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 22 |
| Fe52CFN | 1.0570 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe540 | 1.0507 | Others | ≤ 0.2 | 8 |
| Fe580 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe580 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe590 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe590 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe590 | 1.0543 | Unalloyed structural steels | — | 2 |
| Fe60-2 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe60-2 | 1.0060 | Unalloyed structural steels | — | 21 |
This grade’s own name — recorded in our sources as this grade’s own designation under that standard.
Indicative — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.
Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.