GB Standard Q345B Q345C Q345D steel sheet with low alloy made in
China
Product Description
- Item: GB Standard Q345B Q345C Q345D steel sheet with low alloy made in
China
- Material: Q235,10,20Mn,50Mn,SS400,S10C,S55C,St37,A36,A283(A,B,C,D),1010,1018,1020,1050,S235(JR,JOJ2G3,J2G4),1C22,1C25,1C30,1C40,1C45,1C35,1C40,1C45,1C50,1C55,etc.
- Specifications
- Width 100mm~3500mm
- Thickness 0.3mm~300mm
Length 2m,2.44m,3m,6m,8m,12m, or as required.
- Surface Varnished,PE coated,galvanized.
Q345 is a steel material. It is a low carbon alloy steel (c <0.2%),
with good comprehensive properties, good low temperature
properties, cold stamping properties, welding properties and
machinability. Widely used in bridges, vehicles, ships, buildings,
pressure vessels, etc. Q stands for the yield of this material. The
latter 345 refers to the yield value of this material, which is
about 345 MPa. And as the thickness of the material increases, its
yield value decreases.
Datasheet for Q345
| Chemical Composition/% |
| Material | C | Si | Mn | P | S |
| Q345 A | ≤0.20 | ≤0.55 | 1.00~1.60 | ≤0.045 | ≤0.045 |
| Q345 B | ≤0.040 | ≤0.040 |
| Q345 C | ≤0.035 | ≤0.035 |
| Q345 D | 0.18 | ≤0.030 | ≤0.030 |
| Q345 E | ≤0.025 | ≤0.025 |
| Mechanical Property |
| Material | 抗拉T.S | 屈服 Y.S | 伸长率 EL | 冲击功Akv |
| MPa | MPa | % | J |
| Q345 A | 470~630 | ≥345 | ≥20 | - |
| Q345 B | 20℃ 34 |
| Q345 C | ≥325 | ≥21 | 0℃ 34 |
| Q345 D | -20℃ 34 |
| Q345 E | ≥295 | -40℃ 27 |
What is Hot rolled?
Using continuous casting slabs or preliminary rolled slabs as raw
materials, heated by a step-type heating furnace, high-pressure
water dephosphorization enters the rough rolling mill, the rough
rolling material is cut through the head, tail, and then into the
finishing mill, and computer controlled rolling is implemented.
After the final rolling, it is coiled by laminar cooling
(computer-controlled cooling rate) and coiler to become a straight
hair coil. Straight hair curls tend to have tongue and fishtail
shapes, with poor thickness and width accuracy, and often have
defects such as wave, hem, and tower.
Products' Photos
FAQ
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: How about the delivery terms?
A: 1. Payment: T/T, Western Union, Paypal, 30% deposit in advance
and balance before delivery.
2. Min. Order Quantity: 100KG, or as required.
3. Transportation: By express (DHL,TNT,FedEx),air,sea,and train.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our
products,
Modern always makes a serious inspection for all products and raw
materials in strict procedure.
Q: How about your after-sales service?
A: As a professional steel exporter, we offer promote technology support for all problems and
questions.
Besides, we accept goods return or replace for quality problem.
