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ASTM A1085 Cold-Formed Welded Carbon Steel Hollow Structural Sections

Date:2017-08-18    keywords:ASTM A1085 Cold-Formed Welded Carbon Steel Hollow Structural Sections

ASTM A1085 Standard Specification for Cold-Formed Welded Carbon Steel Hollow Structural Sections (HSS)

ASTM A1085 is a new HSS specification that covers cold-formed welded carbon hollow structural sections for welded or bolted applications. Independence Tube was instrumental with a handful of other HSS producers and the American Institute of Steel Construction (AISC) that developed this product for seismic and bridge applications.


This specification covers cold-formed welded carbon steel hollow structural sections (HSS) for welded or bolted construction that are used in, although not limited to, buildings, bridges, towers, cranes, sign supports and poles, off-shore production and drilling platforms, roll-over protective structures (ROPS), falling object protective structures (FOPS), and amusement rides. This HSS is produced in welded sizes with a periphery of not more than 88 in. [2235 mm] as well as a specified nominal wall thickness of at least 0.148 in. [3.8 mm] and not more than 0.875 in. [22 mm]. The standard addresses areas such as ordering information, the steel-making process, HSS manufacture, heat analysis, product analysis, tensile requirements, flattening test, permissible variations in dimensions, number of tests, retests, test methods, rejection, certification, product marking, packing and loading, and government procurement.


ASTM A500-10
Grade B
ASTM A1085
Manufacture Process Cold-Formed Welded Cold-Formed Welded
Maximum Perimeter 88" 88"
Thickness Range t < 0.875" 0.148" - 0.875"
Yield Strength
Round - 42 ksi min
Shapes - 42 ksi min
50 ksi min
All Shapes
70 ksi max
Tensile Strength
Round - 58 ksi min
Shapes - 58 ksi min
All Shapes - 65 ksi min
Wall Thickness +/- 10% +10% /- 5%
Mass Tolerance N/A -3.5%
Corner Radii No more than 3t max
t ≤ 0.400    1.6t to 3.0t
t > 0.400    1.8t to 3.0t
CVN N/A 25 ft-lbs @ 40° F
Elongation, min in 2" 23% 21%

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