Products Description
Q295GNH steel plate complies with the GB/T 4171 standard and belongs to a type of low-alloy weathering structural steel. Its yield strength is no less than 295 MPa, tensile strength ranges from 430 to 560 MPa, and elongation is generally no less than 22%.
Common supply thicknesses range from 2–40 mm, with widths up to 1600–3000 mm and lengths between 6000–12000 mm. Compared to ordinary carbon steel, Q295GNH steel offers 2–8 times longer corrosion resistance in atmospheric environments and reduces maintenance costs by 30–50%.
As a weathering steel, Q295GNH is extensively used in vehicle manufacturing (e.g., railway carriages, truck frames), bridge structures, transmission towers, and container production. It significantly extends service life during long-term outdoor exposure.
Specification
Thickness: 5-300mm
Width: 1500-3700mm
Lenght: 4000-18000mm
Packaging Details: Standard export seaworthy packing or as required.
Delivery Time:30-50 days, 7 days for stock goods.
Loading Port:Shanghai ,Tianjin, Qingdao.
Offer Ability:5000MT/Per Month.
Surface Treatment:Shot blasting and painting or coated
Heat Treatment: As hot rolled,Control-rolled,Normalized
Q295GNH Chemical composition
| C | Si | Mn | P | S | Cu | Cr | Ni |
| 0.12 | 0.10-0.40 | 0.20-0.50 | 0.07-0.12 | 0.02 | 0.20-0.45 | 0.30-0.65 | 0.25-0.50 |
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Q295GNH steel Mechanical Property
|
Grade |
Thickness |
Yield |
Tensile |
Elongation |
Delivery state |
|
Q295GNH
|
mm |
Min Mpa |
Mpa |
Min % |
|
|
≤6 |
295 |
390 |
24 |
Hot rolling |
|
|
>6 |
|||||
|
≤2.5 |
260 |
390 |
27 |
Cold rolling |
Application
Q295GNH high-weathering structural steel plate is primarily used in:
Bridge Structures - With a yield strength ≥ 295 MPa and tensile strength of 430–560 MPa, it meets the load-bearing requirements for long-span bridges and urban elevated structures, extending service life by 20–40 years compared to ordinary carbon steel.
Railway and Vehicle Manufacturing - Commonly used in railway carriages, freight vehicles, and truck chassis. Its corrosion resistance is 2–8 times higher than carbon steel, reducing maintenance costs by 30–50% in humid or salt-fog environments.
Containers and Storage Equipment - Serves 20–30 years in maritime conditions, significantly outperforming conventional steel's 10–15-year lifespan and reducing scrappage rates from seawater corrosion.
Power transmission towers and chimneys - Suitable for long-term outdoor exposure, their naturally formed dense oxide film stabilizes within 6–12 months, reducing costs associated with periodic painting and anti-corrosion treatments.
Architectural Curtain Walls, Landscape Engineering, and Sculptures - The surface rust layer exhibits a distinctive reddish-brown hue, combining aesthetic appeal with durability. Common service life spans reach 40–80 years, making it widely used in public landscapes, art installations, and landmark structures.
Its corrosion resistance eliminates the need for regular painting, which significantly saves maintenance costs. The natural patina of Q295GNH Corten Steel Plate also provides a distinctive appearance for artistic and structural designs.
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