Q345 Overview
Q345 is a low alloy steel material commonly used in motor vehicles, bridges, ships, and construction. Also known as GB/T 1591, the Q signifies the yield point, and the 345 references the strength of yield. As such, it is essential to note that the yield value decreases as the material thickness increases.
Q345 Equivalent Materials
Q345 can also be replaced with equivalent materials, including A572 Grade 50 USA ASTM, Q355 China GB/T, and SPFC 590 Vietnam/Japanese JIS.
S235
| C | S | P | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1.4 | 0.55 | 0.17 | 0.030 | 0.55 | 0.38 |
Channel bars, also known as heavy duty purlins, are easily identified as a long rolled bar forming a hard U-shape with flanges providing right angles on both sides. Its smaller variation is more typically utilized for vehicle frame support while larger channel bars are utilized for building and bridge decks to absorb flex and rigid force that might damage the structure .
| Q345 S235 c channel | |
| ±0.3 | |
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