Q235NH Corrosion-Resistant Steel, High-Strength Q235NH Weathering Steel

Q235NH Corrosion-Resistant Steel Description

Q235NH steel is a hot-rolled steel resistant to atmospheric corrosion (full name). It is a low-alloy weathering steel that is between ordinary steel and stainless steel, and has both economy and corrosion resistance. Q235NH steel develops a protective rust layer, or patina, when exposed to the elements, significantly enhancing its corrosion resistance. Widely used in China, Q235NH complies with the GB/T 4171 standard and is ideal for outdoor structures requiring longevity and minimal maintenance. Its unique properties make it a top choice for construction, railway, and container manufacturing.

Q235NH Corrosion-Resistant Steel Datasheet

Q235NH Weathering Steel Plates cater to a wide range of project requirements. Available in various sizes, these plates ensure flexibility for applications in construction and engineering. The standard dimensions allow for easy cutting, welding, and fabrication, making Q235NH a versatile material for structural components.

Thickness: 3mm - 150mm
Width: 30mm - 4000mm
Length: 1000mm - 12000mm

Q235NH Corrosion-Resistant Steel Chemical composition

Q235NH Weathering Steel chemical composition includes key elements that enhance its corrosion resistance and mechanical strength. The addition of copper, chromium, and nickel contributes to the formation of a protective patina, while low levels of carbon and sulfur ensure good weldability and toughness. The following table outlines the typical chemical composition of Q235NH steel based on heat analysis.
 

Q235NH Corrosion-Resistant Steel Mechanical Properties

High-Strength Q235NH weathering steel mechanical properties ensure its suitability for demanding structural applications. With a minimum yield strength of 235 MPa and excellent tensile strength, Q235NH offers durability and flexibility. Its good elongation and cold-bending performance make it ideal for forming complex shapes without compromising structural integrity.

Equivalent Grade of Q235NH Corrosion-Resistant Steel

Q235NH weathering steel equivalent materials are comparable steel grades used globally, sharing similar corrosion-resistant properties and mechanical strengths. These equivalents comply with various international standards and are suitable for projects requiring atmospheric corrosion resistance.