Q is representative of the material yield, 345 refers to the material yield value, minimum to achieve 345 mpa. Q345A, Q345B, Q345C Q345D, Q345E carbon steel pipe . And this is the distinction between grade, represents the main impact of temperature is different,
|
Steel Standard |
Steel Grade |
Chemical Composition |
||||||||
|
C≤ |
Mn |
Si≤ |
P≤ |
S≤ |
V |
Nb |
Ti |
Al≥ |
||
|
A |
0.020 |
1.00~1.60 |
0.55 |
0.045 |
0.045 |
0.02~0.15 |
0.015~0.060 |
0.20 |
- |
|
|
B |
0.020 |
1.00~1.60 |
0.55 |
0.040 |
0.040 |
0.02~0.15 |
0.015~0.060 |
0.20 |
- |
|
|
C |
0.020 |
1.00~1.60 |
0.55 |
0.035 |
0.035 |
0.02~0.15 |
0.015~0.060 |
0.20 |
0.015 |
|
|
D |
0.020 |
1.00~1.60 |
0.55 |
0.030 |
0.030 |
0.02~0.15 |
0.015~0.060 |
0.20 |
0.015 |
|
|
E |
0.020 |
1.00~1.60 |
0.55 |
0.025 |
0.025 |
0.02~0.15 |
0.015~0.060 |
0.20 |
0.015 |
|
Q345 steel properties: welding property of Q345 steel is occasionally questioned by end users, although welding property is mainly affected by its chemical content, its production technology has been improved after all those years of research, and has been proved to be one excellent steel standard for steel structure purposes, you can contact us if there’s any doubt in your mind.
