BS 970 070 M 50 steel plate high carbon steel
070 M 50 steel plate,BS 970 070 M 50 steel plate, under BS 970 standard, we can regard 070 M 50 steel plate as high carbon steel.
070 M 50 steel plate is one mainly of high carbon steel,BS 970 070 M 50 steel plate is one of the higher carbon content (0.47-0.55) steels.It is equal to DIN C50,JUS Č.16301 and NF AF70C55.
| 070 M 50 BS 970 Number: 1.0540 | Comparison of steel grades | |
| JUS | Č.16301 | |
| DIN | C50 | |
| BS | - | |
| GOST | - | |
| AISI | - | |
| UNI | - | |
| NF | (AF70C55) | |
070 M 50 steel Chemical analysis
| 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 controlpurposes. 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 of M50 steel
070 M 50 steel Mechanical properties
| Thickness of ruling section tR | |||||
| Diameter in mm | tR≤ 100mm | 100 < tR≤250mm | 250 < tR≤500mm | 500 < tR≤1000mm | |
| Remin (N/mm2) | 320 | 290 | - | - | |
| Rmmin (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 |
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