NS steel grades — 28 designations
Every grade designated under NS, 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
28 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| NS12-143 | 1.0144 | Unalloyed structural steels | ≤ 0.18 | 22 |
| NS12124 | 1.0114 | Unalloyed structural steels | ≤ 0.17 | 21 |
| NS12142 | 1.0044 | Unalloyed structural steels | ≤ 0.21 | 26 |
| NS12143 | 1.0143 | Unalloyed structural steels | ≤ 0.18 | 16 |
| NS12153 | 1.0553 | Unalloyed structural steels | ≤ 0.2 | 20 |
| Y03S355N1 | 1.8814 | Others | ≤ 0.2 | 2 |
| Y20S355M4z | 1.8813 | Others | ≤ 0.12 | 1 |
| Y20S355N4z | 1.8813 | Others | ≤ 0.12 | 1 |
| Y21S355M3 | 1.8810 | Others | ≤ 0.14 | 3 |
| Y21S355M3 | 1.8809 | Others | ≤ 0.14 | 3 |
| Y21S355N3 | 1.8810 | Others | ≤ 0.14 | 3 |
| Y21S355N3 | 1.8809 | Others | ≤ 0.14 | 3 |
| Y25S355M4 | 1.8811 | Others | ≤ 0.12 | 1 |
| Y25S355N4 | 1.8811 | Others | ≤ 0.12 | 1 |
| Y26S355M3 | 1.8806 | Others | ≤ 0.14 | 3 |
| Y26S355N3 | 1.8806 | Others | ≤ 0.14 | 3 |
| Y30S420M3z | 1.8857 | Others | ≤ 0.14 | 2 |
| Y30S420Q3z | 1.8857 | Others | ≤ 0.14 | 2 |
| Y31S420M3z | 1.8859 | Others | ≤ 0.14 | 2 |
| Y35S420M3 | 1.8830 | Others | ≤ 0.14 | 2 |
| Y35S420Q3 | 1.8830 | Others | ≤ 0.14 | 2 |
| Y36S420M3 | 1.8851 | Others | ≤ 0.14 | 2 |
| Y40S460M3z | 1.8887 | Others | ≤ 0.14 | 3 |
| Y40S460Q3z | 1.8887 | Others | ≤ 0.14 | 3 |
| Y41S460M3z | 1.8889 | Others | ≤ 0.14 | 2 |
| Y45S460M3 | 1.8878 | Others | ≤ 0.14 | 3 |
| Y45S460Q3 | 1.8878 | Others | ≤ 0.14 | 3 |
| Y46S460M3 | 1.8883 | Others | ≤ 0.14 | 2 |
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Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.