ASTM A847

The A847 steel specification takes the A500 standards a step further with the addition of atmospheric corrosion resistance.

Bull Moose rises to the challenge with our Weathering Grade product line. Like our A500 entries, it’s cold-formed high-strength/low-alloy steel. But over time, this product develops a permanent, stable, light-brown patina that protects it from corrosion and eliminates the need for painting and re-painting.

BMT Employee with roles of metal

Available in square and rectangular forms, A847 steel is an ideal, cost-effective choice for walkways, bridges, railings, and other structures that are directly exposed to the elements.

Weathering Grade Product Details

  • Our Weathering Grade steel tube is produced per ASTM A847, which mirrors ASTM A500 (plus atmospheric-corrosion-resistant steel).
  • 50 KSI min. yield, 70 KSI min. tensile, 19% min. elongation
  • General applications: bridges, pedestrian walkways, utility/light poles.
  • Normally in stock:
      • 3/16″
      • 1/4″
      • 3/8″
  • If you require a custom size, please inquire about lead time.
  • The typical initial cost savings equal about 10-15%. This product avoids the expense of painting… resulting in savings of at least 30% over the structure’s lifetime.
  • The weathered finish provides a natural look for outdoor environments and doesn’t require either VOC paint or blasting—both of which can be harmful to the environment.
 

Relevant Documentation

Weathering Grade Sell Sheet

Environmental Product Declarations

Blended EPD
EAF-Only EPD