Strict quality control system and perfect after-sales service system are always our top concern which can guarantee and track the quality of our products from raw materials procurement, production processes, finish products as well as after-sales service.
Test:SGS or Third- party test
Delivery: 5-7days after deposit
Q355 is a kind of low alloy high strength structural steel, It is widely used in Bridges, vehicles, ships, construction, pressure vessels, special equipment, etc., where "Q" means yield strength, 355 means the yield strength of this steel is 355MPa, and the yield value will decrease with the increase of the thickness of the material.
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Chemical Composition |
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|
Grade |
C |
Mn |
Si |
P |
S |
V |
Al |
|
Q355A |
≤0.20 |
≤1.7 |
≤0.55 |
≤0.045 |
≤0.045 |
0.02-0.15 |
-- |
|
Q355B |
≤0.20 |
≤1.7 |
≤0.55 |
≤0.040 |
≤0.040 |
0.02-0.15 |
-- |
|
Q355C |
≤0.20 |
≤1.7 |
≤0.55 |
≤0.035 |
≤0.035 |
0.02-0.15 |
≥0.015 |
|
Q355D |
≤0.20 |
≤1.7 |
≤0.55 |
≤0.030 |
≤0.030 |
0.02-0.15 |
≥0.015 |
|
Q355E |
≤0.20 |
≤1.7 |
≤0.55 |
≤0.025 |
≤0.025 |
0.02-0.15 |
≥0.015 |
Q355 can be divided into Q355A, Q355B, Q355C, Q355D and Q355E by grade. What they represent, primarily, is the temperature of the impact.
Q355A level, is not impact;
Q355B, is 20 degrees normal temperature impact;
Q355C, is zero degree impact;
Q355D, -20 degree impact;
Class Q355E, minus 40 degrees.
The impact value is also different at different impact temperatures.
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Conventional Parameters |
|
|
Width |
Plate: 600-2250mm Strip:24-600mm |
|
Length |
1-12m |
|
Thickness |
0.3-250 mm |
|
Tolerance |
Hot rolling: ±0.05mm |
|
Alloy or Not |
None alloy |
|
Processing Service |
Welding, Punching, Cutting, Bending, Decoiling |
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Payment term |
T/T (30% Deposit) |
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MOQ |
5Tons |
|
Packing |
Standard Sea-worthy Packing |
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Standard |
AISI,ASTM,DIN,JIS,GB ,JIS,SUS,EN,etc |
Q355 has good comprehensive mechanical properties, low temperature performance, plasticity and good weldability, used in low pressure vessel, oil tank, vehicles, cranes, mining machinery, power stations, Bridges under dynamic load of the structure, mechanical parts, such as building structure, the general metal structure, hot rolled or normalizing state, can be used in various structure below 40 ℃ cold areas.
