| C30 EN 10250-2:1999, Number: 1.0528 | Comparison of steel grades | |
| JUS | Č.13322 | |
| DIN | C30 | |
| BS | 30 | |
| GOST | - | |
| AISI | - | |
| UNI | ||
| NF | - | |
Chemical analysis -% by mass
| Chemical elements | C | Si max. |
Mn | P max. | S max. |
Cr max. |
Mo max. |
Ni max. |
Cr+Mo+Ni max. |
|
| %, by mass mase | 0,27-0,34 | 0,40 | 0,50-0,80 | 0,045 | 0,045 | 0,40 | 0,10 | 0,40 | 0,63 | - |
| Permissible deviation | ± 0,02 | + 0,03 | ± 0,04 | + 0,005 | + 0,005 | + 0,05 | + 0,03 | + 0,05 | - |
At the option of the manufacturer the elements aluminium, titanium, vanadium and niobium may be added singly or in combination for grain size control purposes. Elements not quoted in table shall not be added to the steel without the agreement of the purchaser, except for the purpose of finishing the heat. Mechanical properties in the normalized and quenched and tempered conditions
| Thickness of ruling section tR | |||||
| Diameter in mm | tR ≤ 100mm | 100< tR ≤250mm | 250< tR ≤500mm | 500< tR ≤1000mm | |
| Re min (N/mm2) | 250 | 230 | - | - | |
| Rm min (N/mm2) | 480 | 460 | - | - | |
| A % min. | l-longitudinal | 21 | 21 | - | - |
| tr -transverse | - | - | - | - | |
| KV min * (J) | l-longitudinal | - | - | - | - |
| tr -transverse | - | - | - | - | |
1N/mm2=1MPa Heat treatment conditions
| Quenching Temperature, 0C | Cooling medium | Tempering Temperature, 0C | Normalizing temperature, 0C |
| 850 to 890 | Water | 550 to 660 | 870 to 910 |
Source:
Tags: C30
