ISO steel grades — 531 designations — Page 7
Every grade designated under ISO, 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
531 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| E355-C | 1.0050 | Unalloyed structural steels | — | 23 |
| E355-C | 1.0050 | Unalloyed structural steels | — | 23 |
| E355C | 1.0553 | Unalloyed structural steels | ≤ 0.2 | 20 |
| E355C | 1.0045 | Unalloyed structural steels | ≤ 0.24 | 17 |
| E355E | 1.0566 | Fine-grain structural steels | ≤ 0.18 | 11 |
| E420 | 1.8902 | Fine-grain structural steels | ≤ 0.2 | 19 |
| E460 | 1.8901 | Fine-grain structural steels | ≤ 0.2 | 7 |
| E460 | 1.8906 | Others | ≤ 0.2 | 3 |
| E500 | 1.8909 | Others | ≤ 0.2 | 3 |
| E550 | 1.8926 | Others | ≤ 0.2 | 2 |
| E620 | 1.8927 | Others | ≤ 0.2 | 2 |
| E690 | 1.8928 | High-strength steels | ≤ 0.2 | 7 |
| ENi6025 | 2.4633 | Nickel and cobalt alloys | 0.15–0.25 | 3 |
| F26 | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| F32 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| F34 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| F5 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| F7 | 1.0425 | Heat-resistant structural steels | ≤ 0.2 | 20 |
| Fe310 | 1.0035 | Unalloyed structural steels | — | 22 |
| Fe355W | 1.8959 | Weathering steels | ≤ 0.16 | 10 |
| Fe355W-1A | 1.8945 | Weathering steels | ≤ 0.12 | 16 |
| Fe360-A | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 20 |
| Fe360-A | 1.0036 | Unalloyed structural steels | ≤ 0.17 | 19 |
| Fe360-B | 1.0486 | Fine-grain structural steels | ≤ 0.16 | 6 |
| Fe360-C | 1.0461 | Fine-grain structural steels | ≤ 0.18 | 5 |
| Fe360-C | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| Fe360-D | 1.0461 | Fine-grain structural steels | ≤ 0.18 | 5 |
| Fe360B | 1.0038 | Unalloyed structural steels | ≤ 0.17 | 26 |
| Fe430-A | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| Fe430-B | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| Fe430-C | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| Fe430-D | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| Fe430D | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| Fe490 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe490 | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe510-C | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe510-C | 1.0050 | Unalloyed structural steels | — | 23 |
| Fe510B | 1.0045 | Unalloyed structural steels | ≤ 0.24 | 17 |
| Fe510C | 1.0553 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Fe590 | 1.0580 | Unalloyed structural steels | ≤ 0.22 | 10 |
| Fe590 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe590 | 1.0060 | Unalloyed structural steels | — | 21 |
| Fe690 | 1.0070 | Unalloyed structural steels | — | 16 |
| Fe690 | 1.0070 | Unalloyed structural steels | — | 16 |
| FeE355 | 1.0976 | Fine-grain steels for cold forming | ≤ 0.12 | 9 |
| FeE420 | 1.0980 | Fine-grain steels for cold forming | ≤ 0.12 | 8 |
| FeE490 | 1.0984 | Fine-grain steels for cold forming | ≤ 0.12 | 6 |
| FeE560 | 1.0986 | Fine-grain steels for cold forming | ≤ 0.12 | 6 |
| FeE690 | 1.0060 | Unalloyed structural steels | — | 21 |
| FeE690 | 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.