Q460NH represents the premium grade in China's weathering steel series (GB/T 4171), delivering 460MPa yield strength and exceptional atmospheric corrosion resistance through its optimized Cu-P-Cr-Ni-Mo alloy system. Designed for extreme service conditions, it forms a dense, self-repairing patina that offers 8-12× longer life than conventional steel in aggressive environments.
Advanced Properties:
✔ Ultra-high strength for weight-critical designs
✔ Outstanding toughness (-40°C impact resistance)
✔ Superior weldability with proper procedures
✔ Resists coastal salt spray & industrial pollution
Engineered For:
Mega bridges (e.g., sea-crossing projects)
High-rise architectural frames
Offshore wind turbine towers
Heavy mining equipment
As the strongest weathering steel in GB/T 4171, Q460NH enables thinner/lighter structures without compromising durability – the ultimate solution for mission-critical infrastructure.
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