Atlas Observer

Category: Infrastructure

A Deep Dive into ASTM A500 HSS for Structural Applications

by Bradlee Fletcher on March 16, 2026

At a Glance: ASTM A500 defines cold-formed carbon steel structural tubing in round, square, and rectangular shapes — the standard for most HSS used in North American structural projects. Grade C is the most widely specified grade, delivering 50 ksi yield for square and rectangular sections and 46 ksi for round. Its closed geometr...

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Think ASTM A1085 For Structures with Dynamic Loading

by Bradlee Fletcher on September 24, 2018

You might already know that the steel used in bridges must meet the toughness requirements of ASTM A709 and AASHTO M270. If you design a bridge with ASTM A500 HSS, the sections will most likely have to be custom-manufactured to meet these requirements. That means higher costs, longer lead times and a higher minimum order quantity. Plus, you’ll ha...

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