GB/T Q415NH Corten Steel Certified

 

 

 

 

GB/T Q415NH Corten Steel

 

 

 

 

GB/T Q415NH is a Chinese-standard weathering steel that "lives with the weather." Unlike regular steel, it develops a tough rust layer when exposed to rain and air, which stops further corrosion. Think of it as "self-armoring" steel-no painting needed, just natural protection.

 

 

Why Engineers Love It:
✅ Saves Money – No paint, no coatings, less maintenance.
✅ Strong & Light – High strength (415 MPa yield) for heavy-duty use.
✅ Aesthetic Rust Look – Popular in modern architecture (but works hard too!).
✅ Easy to Weld & Cut – No special tools needed vs. stainless steel.

 

 

 

Quick Info Table

Property	Q415NH Corten Steel
Standard	GB/T Q415NH (China's weathering steel)
Similar Grades	ASTM A588 (USA), S355J0WP (Europe)
Corrosion Resistance	2–6x better than normal carbon steel
Key Strength	415 MPa yield, 490-630 MPa tensile
Thickness Range	1mm–120mm (or custom)
Best For	Outdoor, rural/urban areas (not seawater)

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Where Is It Used?

Bridges & Overpasses – Rust blends into nature, no repainting every few years.

Factory Roofs & Sheds – Handles rain, pollution, and UV without peeling paint.

Coal/Yard Storage Walls – Survives dust, humidity, and temperature swings.

Decorative Facades – Architects use its "rusty" look for museums, parks, and signs.

Cheaper Alternative – Where stainless steel is overkill but regular steel rusts too fast.

 

 

 

 

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