UNS steel grades — 2038 designations — Page 25
Every grade designated under UNS, 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. Unless marked, every name here is an asserted identity — the same grade under this standard’s own designation. 10 of 50 rows differ and carry an “Indicative” mark.
Also known as
2038 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| K33020 | 1.6570 | Others | 0.28–0.35 | 1 |
| K33517 Indicative | 1.6723 | Special steels for defense technology | 0.13–0.18 | 2 |
| K33517 Indicative | 1.6944 | Special steels for aviation and aerospace | 0.35–0.4 | 2 |
| K34035 | 1.6655 | Special steels for aviation and aerospace | 0.29–0.36 | 4 |
| K34035 Indicative | 1.6743 | Others | 0.28–0.36 | 4 |
| K41245 | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| K41545 | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| K41545 | 1.7366 | Others | ≤ 0.18 | 6 |
| K41583 Indicative | 1.5637 | Low-temperature structural steels | ≤ 0.15 | 11 |
| K41583 Indicative | 1.5639 | Low-temperature structural steels | 0.12–0.19 | 9 |
| K41650 | 1.8201 | Others | 0.04–0.1 | 1 |
| K41853 | 1.5680 | Low-temperature structural steels | ≤ 0.15 | 4 |
| K41910 | 1.6660 | Others | 0.17–0.22 | 1 |
| K42247 | 1.6742 | Quenched and tempered steels | 0.17–0.25 | 1 |
| K42339 | 1.6780 | Special steels for defense technology | 0.12–0.18 | 1 |
| K42339 | 1.6782 | Special steels for defense technology | 0.12–0.2 | 1 |
| K42343 | 1.6742 | Quenched and tempered steels | 0.17–0.25 | 1 |
| K42544 | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| K42885 | 1.6952 | Others | 0.2–0.28 | 1 |
| K44220 | 1.6928 | Quenched and tempered steels | 0.38–0.45 | 3 |
| K44414 | 1.5934 | Special steels for aviation and aerospace | 0.15–0.2 | 1 |
| K44910 | 1.5924 | Special steels for aviation and aerospace | 0.14–0.19 | 5 |
| K51255 | 1.4712 | Heat resistant steels | ≤ 0.12 | 3 |
| K52440 | 1.8550 | Nitriding steels | 0.3–0.37 | 3 |
| K66286 Indicative | 1.4980 | High-temperature steels | 0.03–0.08 | 8 |
| K66286 Indicative | 1.4606 | Others | ≤ 0.08 | 4 |
| K71340 | 1.5662 | Low-temperature structural steels | ≤ 0.1 | 8 |
| K81340 | 1.5662 | Low-temperature structural steels | ≤ 0.1 | 8 |
| K81340 | 1.5663 | Low-temperature structural steels | ≤ 0.1 | 1 |
| K90901 | 1.4903 | High-temperature steels | 0.08–0.12 | 4 |
| K90941 | 1.7386 | Hydrogen resistant steels | 0.08–0.15 | 6 |
| K91231 | 1.3590 | Others | 0.12 | 2 |
| K91283 | 1.6974 | Special steels for aviation and aerospace | 0.29–0.34 | 1 |
| K91313 | 1.6974 | Special steels for aviation and aerospace | 0.29–0.34 | 1 |
| K91505 | 1.3934 | Others | 0.63–0.73 | — |
| K91560 | 1.4903 | High-temperature steels | 0.08–0.12 | 4 |
| K91670 | 1.4725 | Resistance heating alloys | ≤ 0.1 | 1 |
| K92460 Indicative | 1.4905 | Others | 0.09–0.13 | 1 |
| K92460 Indicative | 1.4906 | Others | 0.1–0.14 | 1 |
| K92580 Indicative | — | — | — | 1 |
| K92710 | 1.6359 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K92890 | 1.6358 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K92890 | 1.6359 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K92940 | 1.6359 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K93120 | 1.6354 | Special steels for aviation and aerospace | ≤ 0.03 | — |
| K93120 | 1.6358 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K93160 | 1.6358 | Special steels for aviation and aerospace | ≤ 0.03 | 3 |
| K93540 | 1.6355 | Special steels for aviation and aerospace | ≤ 0.03 | 1 |
| K93540 | 1.6356 | Special steels for aviation and aerospace | ≤ 0.03 | 1 |
| K93600 | 1.3912 | Controlled-expansion nickel-iron alloys | — | 4 |
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.