ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Zhangjiagang Hua Dong Energy Technology Co., Ltd.
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Q235 Q345 B C D E cold rolled / hot rolled alloy steel plate thickness 6 - 80mm
Q345B/C/D/E
1)Standard:GB
2)Thickness:6-80mm
3)Width:1600-3200mm
4)Length:6000-14000mm
5))High quality low price
Chemical Constituent(WT%)
| C | Si | Mn | P | S | V | Nb | Al | Ti | |
| Q345A | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.045 | ≤0.045 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
| Q345B | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.040 | ≤0.040 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
| Q345C | ≤0.20 | ≤0.55 | 1.00-1.60 | ≤0.035 | ≤0.035 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
| Q345D | ≤0.18 | ≤0.55 | 1.00-1.60 | ≤0.030 | ≤0.030 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
| Q345E | ≤0.18 | ≤0.55 | 1.00-1.60 | ≤0.025 | ≤0.025 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
Mechanical Properities
| thickness | test temperature(°c) | Elongation(%) | proof stress(Mpa) | Tensile strenth(Mpa) | |
| Q345A | ≤16 | - | 21 | 345 | 470-630 |
| Q345B | ≤16 | 20 | 21 | 345 | 470-630 |
| Q345C | 16-35 | 0 | 22 | ≥325 | 470-630 |
| Q345D | 35-50 | -20 | 22 | ≥295 | 470-630 |
| Q345E | 50-100 | -40 | 22 | ≥275 | 470-630 |
Our products
| Product Series | Executive Standard | Grade | Class | Thickness (mm) | Delivery State |
| Low-alloy structural steel | GB/T 1591-2008GB/T 3274-2007 | Q345 | A,B | 6~150 | AR |
| C,D | 6~150 | CR | |||
| E | 6~150 | TMCP | |||
| Q390 | A,B,C,D,E | 6~150 | CR | ||
| Q420 | 6~150 | TMCP | |||
| Q500 | 6~100 | TMCP | |||
| Q550 | 6~100 | ||||
| Q620 | 6~80 | ||||
| Q690 | 6~80 | ||||
| GB/T 28410-2012 | Q235FT | B,C,D,E | 5~150 | AR,CR | |
| Q275FT | C,D,E,F | 5~150 | AR,CR | ||
| Q345FT | C,D,E,F | 5~150 | AR,CR | ||
| Q420FT | C,D,E,F | 5~150 | AR,CR | ||
| Q460FT | C,D,E,F | 5~150 | AR,CR | ||
| EN 10025-4:2004 | S275M/ML | - | 6~60 | TMCP | |
| S355M/ML | |||||
| S420M/ML | |||||
| S460M/ML | |||||
| JIS G3106:2008 | SM400 SM490 | A,B,C | 6~150 | AR | |
| A,B,C | 6~150 | CR | |||
| YA,YB | |||||
| SM520 | B,C | 6~80 | TMCP | ||
| SM570 | 6~80 | ||||
| ASTM A572/A572M-12 | Gr42 | - | 6~150 | AR | |
| Gr50 | - | 6~100 | CR | ||
| Gr55 | - | 6~100 | |||
| Gr60 | - | 6~80 | TMCP |