Q355NH Steel Stock

　　Q355NH weathering steel,orweather-resistant steel, is a series of low-alloy steels between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel and a small amount of corrosion-resistant elements such as copper and nickel. GB/T 4171 Q355NH steelhas the toughness of high-quality steel. Plastic stretching, forming, welding, abrasion, high temperature, anti-fatigue and other characteristics; weather resistance is 2 to 8 times that of ordinary carbon steel, coating is 1.5 to 10 times that of ordinary carbon steel.Katar is able to produce and supply Q355NHsteel and Q355NHsteel stock with competitive price.

　　Q355NH Steel Application

　　Q355NHgrade steelhas a protective rust layer resistant to atmospheric corrosion and can be used to manufacture low-alloy structural steels for steel structures such as vehicles, bridges, towers, and containers. Compared with plain carbon steel, weathering steel has better corrosion resistance in the atmosphere.

　　Q355NH steel chemical composition:

　　Q355NH carbon C: ≤ 0.16

　　Q355NH silicon Si: ≤0.50 BR>Q355NH phosphorus P:≤0.030

　　Q355NH sulfur S: ≤0.030

　　Q355NH molybdenum Mo: ≤0.30

　　Q355NH carbon Cu: 0.25-0.55

　　NH vanadium V: ≤0.12

　　Q355NHNb: ≤0.06

　　Q355NH Chromium Cr: 0.40-0.80

　　Q355NHsteelmechanical properties:

　　Tensile strength (MPa): ≧510-670

　　Yield point (MPa): ≧355