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Structural Shapes

Listed on the following pages are shapes commonly carried in stock. The American Iron and Steel Institute has established a designation system for structural shapes, which has been adopted by steel producers. In the column headed "AISI Designation", a letter or letters precedes the size and weight per foot. For example, C3 X 4.1 is the AISI designation for a 3" x 4.1# Standard Structural Channel.

"W" shapes are doubly-symmetric wide flange shapes used as beams or columns whose
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Unit of Measure

Specifications

A

1 in

B

3/8 in

C

1/8 in

Estimated Weight per Foot

.68 lb

Estimated Weight 20-Ft. Length

13.6 lb

Estimated Weight 30-Ft. Length

20.4 lb

Analysis

N/A Carbon .26 Max.
Phosphorus .04 Max.
Sulphur .05 Max.

Applications

N/A For use in riveted, bolted, or welded construction of bridges and buildings, and for general structurals purposes.

Mechanical Properties

N/A ASTM A 36 requirements are:
Tensile Strength - 58.000/80.000 psi
Yield Point - 36,000 Min. psi
Elongation in 8" - 20% Min. (Subject to a deduction from trie above percentage of elongation for thicknesses under 5/16" and over 3/4".)

Weldability

N/A These shapes are easily welded by all the welding processes, and the resultant welds and joints are of extremely high quality. The grade of welding rod to be used depends on thickness of section, design, service requirements, etc.