GB713 Q345R steel is a alloy pressure vessel steel with specified elevated temperature properties. Q345R steel is Chinese low alloy high strength structural steel, material density is 7.85 g/cm³.
The grades of carbon steel and low-alloy high strength steel are denoted by the yield strength, the Capital letter of Chinese characters “Q”(Qu), “R” pressure vessel(Rong), such as Q345R.
Standard: GB 713-2014
Main steel grades: q245r, Q345R, Q370R, 15CrMoR, 18MnMoNbR, 14Cr1MoR, 13MnNiMoR, 12Cr1MoVR
Use: steel plates for boilers and pressure vessels
GB713 Q345R steel chemical composition
|
Grade |
C |
Si |
Mn |
Cu |
Ni |
Cr |
Mo |
|
Q345R |
≤0.20 |
≤0.55 |
1.20-1.70 |
≤0.30 |
≤0.30 |
≤0.30 |
≤0.80 |
|
Nb |
V |
Ti |
Alt |
P |
S |
- |
|
≤0.05 |
≤0.05 |
≤0.03 |
≥0.02 |
≤0.025 |
≤0.01 |
|
GB713 Q345R steel mechanical properties
|
Grade |
Thickness |
Tensile strength |
Yield strength |
Elongation % |
Impacting Test |
|
Temperature |
V |
|
Q345R |
3-16 |
510-640 |
345 |
21 |
0 |
41 |
|
16-36 |
500-630 |
325 |
|
36-60 |
490-620 |
315 |
|
60-100 |
490-620 |
305 |
20 |
|
100-150 |
480-610 |
285 |
|
150-250 |
470-600 |
265 |
Q345R steel plates can be delivered by theoretical weight. When delivered by theoretical weight, the theoretical thickness for weight calculation is the sum of permissible maximum thickness of steel plate plus the airthmetic average of the minimum thickness. The Q345R steel plate density is 7.85g/cm³ for calculations.
Shanghai Katalor Enterprise is located in Pudong district of Shanghai city. It is only 30 minutes from Pudong International airport to our company. If you need GB713 Q345R steel plates, Q345R hot rolled flats, or Q345R heavy plates, we sincerely invite you to visit factory. We will pick you up at the airport if you tell us your schedule.
