Atlas Observer

New jumbo HSS Sizes up to 22” square. Walls up to 1” thick. Rolled right here in the U.S.A. Coming September 2021. Learn more.
Back to the Atlas Observer

Designing with HSS: ASTM A1085 Specification Pocket Reference Guide

on June 28, 2017



ASTM A1085 was developed to improve performance issues related to HSS used in seismic and bridge applications and to make HSS more economical and efficient, raising the bar for construction—especially bridge and seismic design.

Key benefits include:

  • Tighter material tolerances
  • Single minimum yield stress: 50 ksi
  • Maximum specified yield stress: 70 ksi
  • Standard requirement for Charpy notch toughness

To make it easier for you to design with A1085 HSS we developed the A1085 Specification Pocket Reference guide, or as we like to call it, the “red book”. The guide features examples of what project A1085 is best suited for, as well ways it can deliver costs savings on your projects.

What makes this guide invaluable for designing with HSS are the section properties for all of our squares, rectangles and rounds we produce. Need to know the Surface area of 20 x 12 x .313? head to page 8 for you answer. Or perhaps what the torsion values are for 7×7 x .375 – page 22 can show you the way.

The A1085 Specification Pocket Reference Guide is available today, free of charge. You can download your copy of the guide here, or if you need a copy to keep at your desk, we will mail one out to you free of charge.

If you have more question about HSS or A1085, email me today at