In grade Q345A, Q is the symbol for yield strength, 345 means Q345A steel can bear a minimum yield strength of 345MPa. GB/T1591 Q345A steel is a kind of Carbon and Low-alloy High-strength Steel. GB/T1591 Q345A Steel Plate are used in Construction of Bridges, Highway Construction and Other Engineering construction.
Q345A cost saving Steel Plates/sheets can be delivered in either normalized or Thermo mechanically rolled condition.
GB/T1591-94 Q345A cost saving Steel Plates/sheets chemical composition:
| Grade |
C %
|
Si %
|
Mn %
|
P %
|
S %
|
|
Q345A
|
≤0.16
|
≤0.55
|
0.80-1.50
|
≤0.040
|
≤0.040
|
GB/T1591-94 Q345A cost saving Steel Plates/sheets mechanical properties GBT1951:
Grade |
Thickness
(mm)
|
Yield Strength (Mpa)
|
Tensile Strength
(MPa)
|
Elongation
(%)
|
Impact Energy
Min
|
|
Q345A
|
≤ 16
|
295
|
390-570
|
23
|
+20℃
|
34J
|
|
> 16-35
|
275
|
390-570
|
23
|
+20℃
|
34J
|
|
>35
|
255
|
390-570
|
23
|
+20℃
|
34J
|
|
The min impact energy is longitudinal energy
|
Q345A cost saving Steel Plates/sheets typical applications:
Q345A cost saving Steel Plates/sheets benefits to high strength structures, on the other hand weight saving in the final structure due to plate thickness can be reduced, thus increased effective loads during use as well as cost saving in fabrication.
GB/T1591-94 Q345A cost saving Steel Plates/sheets Package
GB/T1591-94 Q345A cost saving Steel Plates/sheets physical properties are as following:
Annealing hardness: 235HBS
Cold pull hardness: 262HBS
Preheating temperature: 522°C
Quenching temperature:
- salt-bath furnace: 1191°C
- controlled atmosphere furnace: 1204°C
Holding time: 5~15 minutes
Cooling type: air cooling
Temper temperature: 788 °C
After tempering hardness: >=60HRC
Melting temperature: 327.3 °C
GB/T1591-94 Q345A cost saving Steel Plates/sheets additional condition
UT (Ultrasonic examination),AR(As Hot Rolled only),TMCP(Thermal Mechanical Control Processing),N(Normalized),Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35) ,Charpy V-Notch Impact Test,HIC test, NDT ,PWHT( Simulated Post Weld Heat Treatment),NACE0175,The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.
GB/T1591-94 Q345A cost saving Steel Plates/sheets Packaging Details:
Standard export seaworthy packing or as required.
Delivery Time: 30-50 days, 7 days for stock goods.
Loading Port: Shanghai ,Tianjin.
Offer Ability: 5000MT/Per Month.
We Bebon always regards providing competitively priced GB/T1591-94 Q345A cost saving Steel Plates/sheets as our purpose and goal. And Our customers being sure of getting the quality product at the best price is our respectable mission, so call today for a quote on GB/T1591-94 Q345A cost saving Steel Plates/sheets.
