Under EN 10250-2:1999 standard,the C50 Hot rolled steels for one-side enamelling are mainly intended for the manufacture of tanks for water heaters. The C50 steel grade can also be used for enamelled tubes or coiled pipes.
| C50 EN 10250-2:1999, Number: 1.0540 | Comparison of steel grades | |
| JUS | Č.16301 | |
| DIN | C50 | |
| BS | - | |
| GOST | - | |
| AISI | - | |
| UNI | - | |
| NF | (AF70C55) | |
C50 steel sheet 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 | 0,47-0,55 | 0,40 | 0,60-0,90 | 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 normalized 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) | 320 | 290 | - | - | |
| Rm min (N/mm2) | 610 | 590 | - | - | |
| A % min. | l-longitudinal | 14 | 14 | - | - |
| 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 |
| 810 to 850 | Oil or water | 550 to 660 | 830 to 870 |
Source:
Tags: C50
