CONDITIONS OF HIGH SPEED CARBON STEEL FLAT BAR AND ROUND BAR
| H&T | Hardened and tempered. |
| ANN | Annealed |
| PH | Precipitation hardened. |
Surface finish of High Speed Steel Hex Bar and Rods
| CG | Centreless ground | HF | Hot finished |
| CF | Cold finished | HRAP | Hot rolled annealed and pickled |
| CD | Cold drawn | P | Polished |
| BD | Bright drawn | SRE | Slit rolled edge |
| P&T | Peeled and turned | RT | Rough turned/peeled |
| ST | Smooth turned | PR | Peeled and reeled |
HIGH SPEED STEEL ROUND BAR SIZES
| Type | SIZES (mm) | SIZES (Inches) | ISO Tolerance |
|---|---|---|---|
| Cold Drawn and Ground | 10.00 – 75.00 | 5/6" – 2.50" | h8-h9-h10-h11 |
| Peeled and Polished | 40.00 – 150.00 | 1.50" – 6.00" | h11, h11-DIN 1013 |
| Peeled and Ground | 20.00 – 50.00 | 3/4″ – 2.00" | h9-h10-h11 |
| Cold Drawn and Polish | 3.00 – 75.00 | 1/8" – 3.00" | h8-h9-h10-h11 |