ASTM A606 Type 4 is a high strength, low alloy (HSLA) grade of steel used when corrosion resistance and weight savings are important. Commonly referred to as weathering steel, A606 Type 4 steel contains copper and additional alloying elements such as chromium, nickel and silicon to enhance its atmospheric corrosion capabilities.
A606 Type 4 steel, when exposed to atmospheric elements such as rain, snow, ice and fog will develop a weathered orange-brown oxidation on the surface of the steel. This serves as a protective coating eliminating the need for painting and inhibits penetration of rust into the steel.
Valmont Tubing manufactures electric resistance welded (ERW) mechanical tubing up to 12.75" OD round and 6" square produced from weathering steel to an ASTM A847 tubing specification. For additional information on ASTM A847 tubing, please click here.
Please contact one of our knowledgeable sales staff members who will assist you with any further questions regarding this specification or with your specific tubing requirements.
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