| 070M55 (En9) |
|---|
BLACK ROUND BAR
Chemical Composition |
| Carbon | 0.50 - 0.60 |
| Silicon | 0.05 - 0.35 |
| Manganese | 0.50 - 0.80 |
| Sulphur | 0.06 MAX |
| Phosphorus | 0.06 MAX |
| Size | Kg/m |
| 20 | 2,466 |
| 25 | 3,853 |
| 30 | 5,549 |
| 35 | 7,553 |
| 40 | 9,865 |
| 45 | 12,485 |
| 50 | 15,413 |
| 55 | 18,65 |
| 60 | 22,195 |
| 65 | 26,049 |
| 70 | 30,21 |
| 75 | 34,68 |
| 80 | 39,458 |
| 85 | 44,545 |
| 90 | 49,939 |
| 95 | 55,642 |
| 100 | 61,654 |
| 108 | 71,846 |
| 115 | 81,537 |
| 120 | 88,781 |
| 130 | 104,195 |
| 140 | 120,841 |
| 150 | 138,721 |
| 160 | 157,833 |
| 170 | 178,179 |
| 180 | 199,757 |
| 190 | 222,57 |
| 200 | 246,614 |
| 210 | 271,893 |
| 220 | 298,403 |
| 230 | 326,148 |
| 240 | 355,125 |
| 250 | 385,336 |
| 280 | 493,4 |
| 305 | 586,34 |
| 330 | 685,2 |
| 350 | 769,84 |
| MECHANICAL PROPERTIES | Condition |
|---|
| | N | R | S | T |
| Limited Ruling Sections, mm | 254 | 102 | 64 | 19 |
| Tensile Strength, Mpa Minium | 600/700 | 690/850 | 770/930 | 850/1000 |
| Yield Stress : Mpa Min | 310 | 415 | 480 | 570 |
| Elongation, perent Min. | 13 | 14 | 14 | 12 |
| Izod Impact Value, Joule | - | - | - | - |
| Brinell Hardness Number | 201/255 | 201/255 | 223/277 | 248/302 |
| BS 970 | 070 M 55 |
| SAE (AISI) | 1055 |
| WERKSTOFF NO | 1,1209 |
TYPICAL USES :
Sprockets and springs, cylinders, cams, crankshafts, keys, small arms parts such as rifle barrels, small gears, nachine tools, balls
for ball mills, ballraces, machined parts requiring moderate wear resistance.