UNI steel grades — 671 designations
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 |
|---|---|---|---|---|
| (G)X6CrNi304 | 1.4313 | Stainless steels | ≤ 0.05 | 8 |
| 100Cr6 | 1.2067 | Tool steels for cold work | 0.95–1.1 | 21 |
| 100Cr6 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| 100MnCrW4KU | 1.2510 | Tool steels for cold work | 0.9–1.05 | 13 |
| 100WCr6 | 1.2419 | Tool steels for cold work | 1–1.1 | 16 |
| 102Cr6KU | 1.2067 | Tool steels for cold work | 0.95–1.1 | 21 |
| 107WCr5KU | 1.2419 | Tool steels for cold work | 1–1.1 | 16 |
| 10CrMo9-10 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| 115CrV3KU | 1.2210 | Tool steels for cold work | 1.1–1.25 | 13 |
| 12CrMo10 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| 12CrMo9 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| 12CrMo9-10 | 1.7383 | Heat-resistant structural steels | 0.08–0.15 | 9 |
| 12CrMo9-10 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| 13CrMo4-5 | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| 13CrMo4-5 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| 14CrMo3 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| 14CrMo3 | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| 14CrMo45 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| 14Ni6 | 1.5622 | Low-temperature structural steels | ≤ 0.18 | 6 |
| 15Mo3 | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| 15NiCrMo13 | 1.6657 | Special steels for aviation and aerospace | 0.11–0.17 | 15 |
| 15NiCrMo13 | 1.3343 | High-speed steels | 0.86–0.94 | 19 |
| 16 NiCr 11 | 1.5752 | Case hardening steels | 0.14–0.2 | 15 |
| 16 NiCr 11 | 1.5752 | Case hardening steels | 0.14–0.2 | 15 |
| 16CrMo3 | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| 16CrMo3 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| 16CrNi4 | 1.5715 | Case hardening steels | 0.13–0.19 | 7 |
| 16CrNi4 | 1.5714 | Case hardening steels | 0.13–0.19 | 6 |
| 16MnCr5 | 1.7139 | Case hardening steels | 0.14–0.19 | 11 |
| 16MnCr5 | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 16Mo3 | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| 16Mo3KW | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| 16Mo5 | 1.5423 | Heat-resistant structural steels | 0.12–0.2 | 5 |
| 16NiCr11 | 1.5732 | Case hardening steels | 0.1–0.17 | 13 |
| 16NiCrMo12 | 1.6657 | Special steels for aviation and aerospace | 0.11–0.17 | 15 |
| 16NiCrS4 | 1.5715 | Case hardening steels | 0.13–0.19 | 7 |
| 18CrMo4 | 1.7243 | Case hardening steels | 0.15–0.21 | 12 |
| 18CrMo4 | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| 18CrMo45KG | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| 18CrMo45KW | 1.7262 | Case hardening steels | 0.13–0.17 | 18 |
| 18NiCrMo5 | 1.6566 | Case hardening steels | 0.14–0.2 | 7 |
| 18NiCrMo7 | 1.6587 | Case hardening steels | 0.15–0.21 | 15 |
| 18NiCrMo7 | 1.6566 | Case hardening steels | 0.14–0.2 | 7 |
| 18NiCrMoS5 | 1.6569 | Case hardening steels | 0.14–0.2 | 1 |
| 1C10 | 1.0301 | Case hardening steels | 0.07–0.13 | 20 |
| 1C35 | 1.0501 | Quenched and tempered steels | 0.32–0.39 | 23 |
| 1C45 | 1.0503 | Quenched and tempered steels | 0.42–0.5 | 24 |
| 1C50 | 1.0540 | Quenched and tempered steels | 0.47–0.55 | 13 |
| 1C55 | 1.0535 | Quenched and tempered steels | 0.52–0.6 | 21 |
| 1C60 | 1.0601 | Quenched and tempered steels | 0.57–0.65 | 25 |
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.