Q265GNH High Weathering Steel Plate For Construction
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Gnee Steel (Tianjin) Co., Ltd. is one of the most professional q265gnh high weathering steel plate for construction manufacturers and suppliers in China. Welcome to wholesale customized q265gnh high weathering steel plate for construction at competitive price from our factory. Good service and quality products are available.
Products Description
Q265GNH High Weathering Steel Plate is a premium structural material engineered to withstand extreme atmospheric conditions, making it ideal for demanding construction applications. Developed in compliance with China's GB/T 4171 standard, this low-alloy steel combines corrosion resistance, mechanical strength, and cost-effectiveness, offering a sustainable solution for outdoor infrastructure projects.
Core Alloy Composition & Corrosion Resistance
Q265GNH incorporates carefully balanced alloying elements to form a self-protective rust layer that inhibits further corrosion. Key components include:
|
Grade |
Chemical Components(%) |
||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
Others |
|
|
Q265GNH |
≤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 |
a,b |
|
In order to improve the performance of steel, one or more trace alloying elements can be added: Nb 0.015%~0.060%, V 0.02%~0.12%, Ti 0.02%~0.10%, Alt>0.020%. If the above elements are used in combination, it should be ensured that the content of at least one of the elements reaches the lower limit of the above chemical composition. The following alloying elements can be added: Mo < 0.30%, Zr < 0.15%. |
|||||||||
Mechanical Performance
Q265GNH delivers robust mechanical properties for structural integrity:
|
Grade |
Tensile Test |
180 Degrees Bending Test Diameter of the bending center |
||||||||||
|
Lower-yield-strength R/(N/mm²) No less than |
Tensile Strength Rm/(N/mm²) |
Elongation after fracture A/% No less than |
||||||||||
|
≤16 |
>16~ 40 |
>40~ 60 |
>60 |
≤16 |
>16~ 40 |
>40~ 60 |
>60 |
≤6 |
>6~ 16 |
>16 |
||
|
Q265GNH |
265 |
- |
- |
- |
≥410 |
27 |
- |
- |
- |
a |
- |
- |
Applications
Designed for longevity in harsh environments, Q265GNH is widely used in:
- Construction: Building frames, roofing, and cladding for outdoor structures.
- Transportation: Railway carriages, shipping containers, and highway guardrails, where corrosion resistance is critical.
- Industrial Infrastructure: Power transmission towers, chemical storage tanks, and offshore platforms exposed to salt-laden air or pollutants.
Sustainability & Cost Efficiency
By eliminating the need for protective coatings, Q265GNH reduces carbon emissions and material waste. Its extended lifespan (30–40 years in moderate climates) significantly lowers lifecycle costs compared to traditional steel. Additionally, the material's recyclability aligns with global green building initiatives.
Quality Assurance
Manufactured using advanced hot-rolling techniques, Q265GNH undergoes rigorous testing for chemical composition, mechanical properties, and surface quality. Certifications such as ISO and SGS ensure compliance with international standards.
For construction projects requiring durability, low maintenance, and environmental responsibility, Q265GNH High Weathering Steel Plate is the optimal choice. Contact us to explore customized solutions for your next structural application.
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