Complaint
| NAME | COLD DRAWN,HOT ROLLED HEXAGONAL STEEL | |||
| MATERIAL GRADE | Q235,20CR,40CR | |||
| SIZES RANGE | 8MM-80MM | |||
| TOLERANCE | 1-2% TOLERANCE | |||
| LENGTH | 3M,5.8M OR 6M | |||
| SURFACE | BLACK,BRIGHT | |||
| TEST | SQUASH TEST, EXTENDED TEST, WATER PRESSURE TEST, CRYSTAL ROT TEST, HEAT TREATMENT, NDT | |||
| CHEMICAL COMPOSITION | CHEMICAL COMPOSITION | Q235 | 20# | 45# |
| C | 0.14~0.20% | 0.17~0.23 | 0.37~0.45 | |
| MN | 0.30~0.65 | 0.35~0.65 | 0.50~0.80 | |
| S | ≤0.050 | ≤0.035 | ≤0.035 | |
| P | ≤0.045 | ≤0.035 | ≤0.035 | |
| SI | ≤0.30 | 0.17~0.37 | 0.17~0.37 | |
| MECHANICAL PROPERTIES | TENSILE STRENGTH | 380~400 | ≥410 | ≥580 |
| YIELD STRENGTH | 235 | ≥245 | ≥335 | |
| EXTENSION | 26% | ≥25 | ≥19 | |
