According to IS 10262:1982, the compressive strength for different grades of OPC are-
| Grade | Compressive strength |
| A | 31.9 – 36.8 MPa |
| B | 36.8 – 41.7 MPa |
| C | 41.7 – 46.6 MPa |
| D | 46.6 – 51.5 MPa |
| E | 51.5 – 56.4 MPa |
| F | 56.4 – 61.3 MPa |
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