IS steel grades — 111 designations
Every grade designated under IS, with the identifying and comparative data we hold for each. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is recorded in our sources as this standard’s own designation for the grade.
Also known as
111 designations| Grade | C% by weight |
|---|---|
| 165 | ≤ 0.12 |
| 205 | ≤ 0.15 |
| 235 | ≤ 0.17 |
| 255 | ≤ 0.2 |
| 325 | ≤ 0.2 |
| 355 | ≤ 0.2 |
| 420 | ≤ 0.2 |
| 490 | ≤ 0.2 |
| 560 | ≤ 0.2 |
| C15 | 0.12–0.18 |
| C15 A | 0.12–0.18 |
| C15 B | 0.12–0.18 |
| C15 C | 0.12–0.18 |
| C15 HMn A | 0.12–0.18 |
| C15 HMn B | 0.12–0.18 |
| C15 HMn C | 0.12–0.18 |
| C15 MMn A | 0.12–0.18 |
| C15 MMn B | 0.12–0.18 |
| C15 MMn C | 0.12–0.18 |
| C18 A | 0.15–0.21 |
| C18 B | 0.15–0.21 |
| C18 C | 0.15–0.21 |
| C18 HMn A | 0.15–0.21 |
| C18 HMn B | 0.15–0.21 |
| C18 HMn C | 0.15–0.21 |
| C18 MMn A | 0.15–0.21 |
| C18 MMn B | 0.15–0.21 |
| C18 MMn C | 0.15–0.21 |
| C20 A | 0.17–0.23 |
| C20 B | 0.17–0.23 |
| C20 C | 0.17–0.23 |
| C20 HMn A | 0.17–0.23 |
| C20 HMn B | 0.17–0.23 |
| C20 HMn C | 0.17–0.23 |
| C20 MMn A | 0.17–0.23 |
| C20 MMn B | 0.17–0.23 |
| C20 MMn C | 0.17–0.23 |
| C22 | ≤ 0.25 |
| C8 | ≤ 0.15 |
| CR0 | ≤ 0.25 |
| CR1 | ≤ 0.15 |
| CR2 | ≤ 0.12 |
| CR3 | ≤ 0.1 |
| CR4 | ≤ 0.08 |
| CR5 | ≤ 0.06 |
| E165 | ≤ 0.25 |
| E170 | ≤ 0.25 |
| E215 | ≤ 0.25 |
| E250A | ≤ 0.23 |
| E250B0 | ≤ 0.22 |
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Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.