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MKE · 8 grades

# MKE steel grades — 8 designations

Every grade designated under MKE, 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

 8 designations

| Grade | Material no. | Category | C% by weight | Also in other standards |
|---|---|---|---|---|
| [Ç 1020](/materials/mke/c-1020 "Ç 1020") | [1.1151](/materials/material-no/1.1151 "1.1151") | Quenched and tempered steels | 0.17–0.24 | 15 |
| [Ç 1030](/materials/mke/c-1030 "Ç 1030") | [1.1181](/materials/material-no/1.1181 "1.1181") | Quenched and tempered steels | 0.32–0.39 | 20 |
| [Ç 1040](/materials/mke/c-1040 "Ç 1040") | [1.1186](/materials/material-no/1.1186 "1.1186") | Quenched and tempered steels | 0.37–0.44 | 16 |
| [Ç 1060](/materials/mke/c-1060 "Ç 1060") | [1.1221](/materials/material-no/1.1221 "1.1221") | Quenched and tempered steels | 0.57–0.65 | 18 |
| [Ç 4140](/materials/mke/c-4140 "Ç 4140") | [1.7225](/materials/material-no/1.7225 "1.7225") | Quenched and tempered steels | 0.38–0.45 | 25 |
| [Ç 4340](/materials/mke/c-4340 "Ç 4340") | [1.6562](/materials/material-no/1.6562 "1.6562") | Quenched and tempered steels | 0.37–0.44 | 10 |
| [Ç 5140](/materials/mke/c-5140 "Ç 5140") | [1.7035](/materials/material-no/1.7035 "1.7035") | Quenched and tempered steels | 0.38–0.45 | 18 |
| [Ç 6150](/materials/mke/c-6150 "Ç 6150") | [1.8159](/materials/material-no/1.8159 "1.8159") | Quenched and tempered steels | 0.47–0.55 | 27 |

**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**Withdrawn** — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.