COPANT steel grades — 63 designations
Every grade designated under COPANT, 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
63 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| 1010 | 1.0301 | Case hardening steels | 0.07–0.13 | 20 |
| 1016 | 1.0401 | Case hardening steels | 0.12–0.18 | 23 |
| 1020 | 1.0402 | Quenched and tempered steels | 0.17–0.24 | 24 |
| 1025 | 1.0406 | Quenched and tempered steels | 0.22–0.29 | 20 |
| 1030 | 1.1178 | Quenched and tempered steels | 0.27–0.34 | 13 |
| 1038 | 1.1150 | Others | 0.36–0.4 | 5 |
| 1038 | 1.1181 | Quenched and tempered steels | 0.32–0.39 | 20 |
| 1038 | 1.9501 | Others | 0.35–0.42 | 4 |
| 1040 | 1.1186 | Quenched and tempered steels | 0.37–0.44 | 16 |
| 1045 | 1.1191 | Quenched and tempered steels | 0.42–0.5 | 21 |
| 1045 | 1.1191 | Others | 0.42–0.5 | 18 |
| 1050 | 1.1206 | Quenched and tempered steels | 0.47–0.55 | 17 |
| 1060 | 1.0601 | Quenched and tempered steels | 0.57–0.65 | 25 |
| 1070 | 1.1231 | Spring steels | 0.65–0.73 | 18 |
| 1080 | 1.0616 | Spring steels | 0.83–0.88 | 8 |
| 1080 | 1.1265 | Spring steels | 0.84–0.88 | 5 |
| 1080 | 1.9615 | Spring steels | 0.75–0.88 | 5 |
| 1095 | 1.1274 | Spring steels | 0.95–1.05 | 13 |
| 1117 | 1.0710 | Free cutting steels | 0.12–0.18 | 5 |
| 1117 | 1.0712 | Free cutting steels | 0.14–0.2 | 4 |
| 1117 | 1.0725 | Free cutting steels | 0.12–0.18 | 5 |
| 1117 | 1.9705 | Others | 0.14–0.2 | 3 |
| 1144 | 1.0762 | Free cutting steels | 0.4–0.48 | 20 |
| 1213 | 1.0715 | Free cutting steels | ≤ 0.14 | 14 |
| 1215 | 1.0736 | Free cutting steels | ≤ 0.14 | 11 |
| 12L14 | 1.0737 | Free cutting steels | ≤ 0.14 | 8 |
| 1541 | 1.1167 | Quenched and tempered steels | 0.32–0.4 | 17 |
| 4130 | 1.7218 | Quenched and tempered steels | 0.22–0.29 | 25 |
| 4140 | 1.7225 | Quenched and tempered steels | 0.38–0.45 | 25 |
| 4320 | 1.5919 | Case hardening steels | 0.12–0.18 | 11 |
| 4340 | 1.6565 | Quenched and tempered steels | 0.35–0.45 | 15 |
| 4820 | 1.6587 | Case hardening steels | 0.15–0.21 | 15 |
| 4820 | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 4820 | 1.7149 | Case hardening steels | 0.17–0.22 | 8 |
| 5115 | 1.7131 | Case hardening steels | 0.14–0.19 | 24 |
| 5120 | 1.7147 | Case hardening steels | 0.17–0.22 | 15 |
| 5130 | 1.7030 | Quenched and tempered steels | 0.24–0.31 | 12 |
| 5135 | 1.7034 | Quenched and tempered steels | 0.34–0.41 | 23 |
| 5140 | 1.7035 | Quenched and tempered steels | 0.38–0.45 | 18 |
| 5150 | 1.7006 | Quenched and tempered steels | 0.42–0.5 | 5 |
| 5160 | 1.7176 | Spring steels | 0.52–0.59 | 18 |
| 52100 | 1.3505 | Bearing steels | 0.93–1.05 | 22 |
| 6150 | 1.8159 | Quenched and tempered steels | 0.47–0.55 | 27 |
| 8620 | 1.6523 | Case hardening steels | 0.17–0.23 | 18 |
| 8630 | 1.6545 | Others | 0.27–0.34 | 3 |
| 8640 | 1.6546 | Quenched and tempered steels | 0.37–0.44 | 14 |
| 8650 | 1.7228 | Quenched and tempered steels | 0.46–0.54 | 12 |
| 8660 | 1.6528 | Others | 0.55–0.65 | 3 |
| 9254 | 1.5026 | Spring steels | 0.52–0.6 | 20 |
| 9260 | 1.5027 | Spring steels | 0.56–0.64 | 11 |
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.