C55 Steel Plate Main Applications is always used for manufacturing factory buildings, general construction and engineering plants, such as, drilling machine, excavator, tip lorry with electric wheel, mining dump truck, grab, shovel loader, bulldozer, all kinds of cranes, coalmine hydraulic support and other machinery and related structure units.
| C55 EN 10250-2:1999, Number: 1.0535 |
|
Comparison of steel grades | |
| JUS | Č.1630 | ||
| DIN | C55 | ||
| BS | 070M55 | ||
| GOST | 55 | ||
| AISI | 1055 | ||
| UNI | C55 | ||
| NF | (AF70C55), IC55 | ||
C55 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 | 0,52-0,60 | 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) | 330 | 330 | 260 | 250 | |
| Rm min (N/mm2) | 640 | 620 | 600 | 590 | |
| A % min. |
l-longitudinal
|
12 | 12 | 12 | 11 |
|
tr -transverse
|
- | 9 | 9 | 8 | |
| KV min * (J) |
l-longitudinal
|
- | - | - | - |
|
tr -transverse
|
- | - | - | - | |
1N/mm2=1MPa Maksimim hardness for forgings to be supplied in the annealed condition
| HB max 229 |
| Quenching Temperature, 0C | Cooling medium | Tempering Temperature, 0C | Normalizing temperature, 0C |
| 805 to 845 | Oil or water | 550 to 660 | 825 to 865 |
| C55 EN 10083-2:2002, Number: 1.0535 |
|
Comparison of steel grades | |
| JUS | Č.1630 | ||
| DIN | C55 | ||
| BS | 070M55, (EN9) | ||
| GOST | 55 | ||
| AISI | 1055 | ||
| UNI | C55, 1C55 | ||
| NF | (AF70C55), 1C55 | ||
| Chemical elements | C | Si max. |
Mn | P max. | S max. |
Cr max. |
Mo max. |
Ni max. |
Cr+Mo+Ni max. |
| %, by mass |
0,52-0,60
|
0,40 | 0,60-0,90 | 0.045 | 0,045 | 0,40 | 0,10 | 0,40 | 0,63 |
| Permisible deviation | ± 0.02 | + 0,03 | ± 0,04 | + 0.005 | + 0.005 | +0,05 | +0,03 | +0,05 | - |
| +S HB max. | +A HB max. |
| 255 | 229 |
|
|
Mechanical properties for the ruling sections (see prEN10083-1:2002, Annex A) with a diameter (d) or for flat products trickness (t) of | ||||
| d ≤ 16mm t ≤ 8mm | 16mm < d ≤ 40mm 8mm < t ≤ 20mm | 40mm < d ≤ 100mm 20mm < t ≤ 60mm | |||
| Re min (MPa) | 550 | 490 | 420 | ||
| Rm (MPa) | 800-950 | 750-900 | 700-850 | ||
| A min. (%) | 12 | 14 | 15 | ||
| Z min. (%) | 30 | 35 | 40 | ||
| KV min. (J) | - |
-
|
-
|
||
|
|
Mechanical properties for products with a diameter (d) or, for flat products, a trickness (t) of | ||||
| d ≤ 16mm t ≤ 16mm | 16mm < d ≤ 100mm 16mm < t ≤ 100mm | 100mm < d ≤ 250mm 100mm < t ≤ 250mm | |||
| Re min. (MPa) | 370 | 300 | 300 | ||
| Rm min. (MPa) | 680 | 640 | 620 | ||
| A min. (%) |
11
|
12
|
12
|
||
| Quenching, 0C | Quenching agent | Tempering, 0C | Normalizing, 0C |
| 805-845 | Water or oil Oil or water | 550-660 | 825 to 885 |
Source:
Tags: C55
