Steel grade Q345B is the most common used as high strength low alloy structural steel in industry area. The equivalent steel grade with Q345B are EN 10025-2 S355 JR, ASTM A572/A572 A572 Grade 50 and DIN 17100 St52-3. Q345B steel tube also used in general structure and mechanism , including construction , machinery , transportation , aviation ,petroleum mining and each kind of structure tubes.
Chemical composition for Q345B low alloy structural steel (Heat Analysis Max%)
Main chemical elements composition of Q345B | |||||||
C
|
Si
|
Mn
|
P
|
S
|
V
|
Nb
|
Ti
|
0.20
|
0.55
|
1.00-1.60
|
0.040
|
0.040
|
0.02-0.15
|
0.015-0.060
|
0.02-0.20
|
Thickness (mm) | ||||
Q345B
|
≤ 16
|
16 ≤ 35
|
35 ≤ 50
|
50
|
Yield strength (≥Mpa)
|
345
|
325
|
295
|
275
|
Tensile strength (Mpa)
|
470-630
| |||
Q345B Steel Tube Specification
Thickness: 6-100 mm
Width: 1500-3600 mm
Length: 6000-18000
By the way, we also can produce all kinds of size according to customer΄s needs.
Standard: GB/T1591 GBT16270
Width: 1500-3600 mm
Length: 6000-18000
By the way, we also can produce all kinds of size according to customer΄s needs.
Standard: GB/T1591 GBT16270
Q345B steel is one of several definitions of hardness in materials science, The typical test uses a 10 millimeters (0.39in)diameter steel ball as an in denter with a 3,000kgf (29.42kN; 6,614lbf) force, copper hardness is 35HB.
Katalor enterprises will use our professional services, best quality and competitive price to fulfill each customers needs in Q345B steel. More information about Q345B steel tube price, please feel free to contact us, we will always do our best to help you.
learn more:http://construction-steel.com/News/Q345-B-Steel-Low-Alloy-Structural-Steel-Q345B-Prime-Quality-Q345B-Steel-Tube.html
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