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Structural Steel Shapes are usually ordered as specification ASTM-A36.

This Standard of the American Society for Testing and Materials is issued under the designation A-36.

All size available as hot dipped galvanized

Conforms to A-992, A-36 and A-572-GR50.
Standard lengths 40', 50', 60'
Unit of Measure

Specifications

Material

Steel

Shapeform

Flange Beams

Nominal Size

21 x 8 1/4 inches

Working Decimal Equivalent

21.000 x 8.250 inches533.4 x 209.55 mm

Weight lbs/ft

93 lbs/ft138.399252 kg/m

Depth of Section - A

21.62 inches549.148 mm

Flange Width - B

8.420 inches213.868 mm

Average Flange Thickness - C

0.930 inches23.622 mm

Web Thickness - D

0.580 inches14.732 mm

Weight per 40 ft. Length

3720 lbs1685.16 kg

Weight per 50 ft. Length

4650 lbs2106.45 kg

Weight per 60 ft. Length

5580 lbs2527.74 kg

Standard Length

40 ft50 ft60 ft

Typical Mechanical Properties

Tensile Strength

56000 to 80000 psi

Min. Yield Strength

50000 psi

Max. Carbon Content

0.26

ASTM Specification

ASTM A-36 ASTM A-572