| Tensile Strength RM N/mm²) Nom |
400 | 400 | 500 | 500 | 600 | 800 | 800 | 900 | 1000 | 1200 |
| Min | 400 | 420 | 500 | 520 | 600 | 800 | 830 | 900 | 1040 | 1220 |
| Vickers Hardness HV - Min |
120 | 130 | 155 | 160 | 190 | 230 | 255 | 280 | 310 | 372 |
| Max |
220 | 220 | 220 | 220 | 250 | 300 | 336 | 360 | 382 | 434 |
| Brinell Hardness 30D2 HB - Min |
114 | 124 | 147 | 152 | 181 | 219 | 242 | 266 | 295 | 353 |
| Max |
209 | 209 | 209 | 209 | 238 | 285 | 319 | 342 | 362 | 412 |
| Rockwell Hardness - HR (Min / Max) |
67 | 71 | 79 | 82 | 89 | -- | -- | -- | -- | -- |
| HRC |
-- | -- | -- | -- | -- | 20 | 23 | 27 | 31 | 38 |
| HRB |
95 | 95 | 95 | 95 | 99 | -- | -- | -- | -- | -- |
| HRC |
-- | -- | -- | -- | -- | 30 | 34 | 36 | 39 | 44 |
| Surface Hardness HV Max |
-- | -- | -- | -- | -- | 320 | 356 | 380 | 402 | 454 |
| Yield Stress, Rel. N/mm² Nom |
240 | 320 | 300 | 400 | 480 | -- | -- | -- | -- | -- |
| Min |
240 | 340 | 300 | 420 | 480 | -- | -- | -- | -- | -- |
| Stress at Perman Set N/mm² - Nom |
-- | -- | -- | -- | -- | 640 | 640 | 720 | 900 | 1080 |
| Limit, R - Min |
-- | -- | -- | -- | -- | 640 | 660 | 720 | 940 | 1100 |
| Sp/ReL |
0.94 | 0.91 | 0.94 | 0.91 | 0.91 | 0.91 | 0.91 | 0.91 | 0.88 | 0.88 |
| Stress under Proof load, S N/mm² |
225 | 310 | 280 | 380 | 440 | 580 | 600 | 650 | 830 | 970 |
| Elongation After Fracture A% Min |
22 | 14 | 20 | 10 | 8 | 12 | 12 | 10 | 9 | 8 |
| Head soundness |
No Fracture |
| Maximum Height on non Decarburized thread zone. E |
-- |
1/2H1 |
2/3H1 |
3/4H1 |
|
| Maximum Depth of complete (mm) Decarburization |
G |
0.015 |
| Reference |
IS 1367 PART 3 |
