GB/T 4171 Q355GNH weathering steel material specification

Jan 19, 2026

Leave a message

GB/T 4171 Q355GNH weathering steel is a high-performance atmospheric corrosion-resistant steel widely used in vehicles, bridges, towers, containers, and other structural applications.

 

GB/T 4171 Q355GNH weathering steel

 

Gnee is a professional GB/T 4171 Q355GNH weathering steel supplier in China, maintaining a large monthly stock to meet customer demands.

 

Chemical Composition (%)

 

Grade C Max Si Mn Max P S Max
GB/T 4171 Q355GNH 0.15 0.25–0.75 1.0 0.07–0.15 0.02

 

Mechanical Properties

 

Grade Yield Strength (MPa) Tensile Strength (MPa) Minimum Elongation (%)
GB/T 4171 Q355GNH 345–355 490–630 22

 

Specifications & Terms

 

Packaging: Standard export seaworthy packing or customized according to client requirements

Delivery Time: 30–50 days (7 days for stock goods)

Loading Ports: Shanghai, Tianjin, Qingdao

Supply Capacity: 5000 MT per month

Minimum Order Quantity (MOQ): 1 piece

 

Welcome to purchase GB/T 4171 Q355GNH weathering steel from BBN. We provide high-quality, cost-effective solutions for your structural steel needs, including sheets, plates, and custom profiles.

 

Contact now

 

info-536-393