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
Q represents the yield limit of this material. The following 235 refers to the yield value of this material, which is about 235MPa.
And the yield value decreases with the increase of the thickness of the material (thickness/diameter ≤16mm, yield strength is 235MPa; 16mm< plate thickness/diameter ≤40mm, yield strength is 225MPa; 40mm< plate thickness/diameter ≤60mm, yield strength is 215MPa; 60mm< plate thickness/diameter ≤100mm, yield strength is 205MPa; 100mm< plate thickness/diameter ≤150mm, yield strength is 195MPa; 150mm< plate thickness/diameter ≤200mm, yield strength is 185MPa).
Because the carbon content is low, the comprehensive performance is better, the strength, plasticity and welding performance is better match, the most widely used.
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Chemical Composition% |
|||||
|
Grade |
C |
Mn |
Si |
S |
P |
|
Q235A |
≤0.22 |
≤1.4 |
≤0.35 |
≤0.05 |
≤0.045 |
|
Q235B |
≤0.20 |
≤1.4 |
≤0.35 |
≤0.045 |
≤0.045 |
|
Q235C |
≤0.17 |
≤1.4 |
≤0.35 |
≤0.030 |
≤0.040 |
|
Q355D |
≤0.17 |
≤1.4 |
≤0.35 |
≤0.035 |
≤0.035 |
Q235A, Q235B, Q235C, Q235D different grades represent, mainly is the impact of the temperature is different.
A means no impact, B is above 20 degrees, C is above 0 degrees, D-20 degrees,
A to D is different, refers to their performance in the impact temperature difference. Respectively: Q235A, is not required for impact toughness test; Q235B is used for impact toughness test at room temperature (20℃); Q235C is used for 0℃ impact toughness test; Grade Q235D is for impact toughness test at -20℃.
Charpy V notch specimens were used in the impact toughness test. The impact toughness index is Akv. For grade B, C and D steel, Akv≥27J is required under different temperature requirements. The impact value is also different at different impact temperatures.
|
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 |
|
Payment term |
T/T (30% Deposit) |
|
MOQ |
5Tons |
|
Packing |
Standard Sea-worthy Packing |
|
Standard |
AISI,ASTM,DIN,JIS,GB ,JIS,SUS,EN,etc |
1. Q235 Widely used in buildings and engineering structures. It is used for making steel bars or building workshop frames, high voltage transmission towers, Bridges, vehicles, boilers, containers, ships, etc., and also a large number of mechanical parts with low performance requirements. C, D grade steel can also be used for some professional steels.
2. Can be used for all kinds of mold handle and other unimportant mold parts.
3. Using Q235 steel as punch material, after quenching without tempering directly used, hardness of 36~40HRC, to solve the phenomenon of broken punch in use.
