GB/T 714-2008 Q345qD桥梁用结构钢
What does Q345qD stand for?
The first letter of “Qufu”(yield strength in Chinese spelling);
The minimum value of yield strength in MPa;
q- the first letter of “Qiao”(bridge steelin Chinese spelling);
D- the steel quality is Grade D.
以下有三个质量等级Q345q答案:C
GB/T 714-2008 Q345qD grade belongs to structural steel for bridge. The Q345qD steel products are produced in plates thickness less than 150mm, steel sheets, strips and cutting steel parts less than 25.4mm thickness, and steel sections less than 40mm. Welcome to contact us email:(电子邮件保护)您对我们的桥架钢板q345qd感兴趣。
Q345qDsteel chemical composition (%)
| 年级 | C | 如果 | 锰 | P | 年代 | 注 | V | “透明国际” | Cr | 倪 | 铜 | 莫 | N | 肌萎缩性侧索硬化症 |
| Q345qD | ≤0.18 | ≤0.55 | 0.90 - -1.70 | ≤0.025 | ≤0.025 | ≤0.06 | ≤0.08 | ≤0.03 | ≤0.80 | ≤0.50 | ≤0.55 | ≤0.20 | ≤0.012 | ≥0.015 |
Q345qD钢的力学性能
| 年级 | 屈服强度(MPa)最小厚度为mm | 抗拉强度最小。 | 伸长 | v形冲击试验 | ||
| ≤50 | > 50≤100 | Mpa | %敏 | 测试温度℃ | 冲击吸收能量千伏₂/J | |
| Q345q | 345 | 335 | 490 | 20. | 0 | 47 |
GB/T 714 Q345qD structural steel plates and sheets are supplied in normalized, thermo-mechanical rolling, quenched and tempered condition. The bridge steel is also featured with atmospheric corrosion resistance.
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