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 6 1/2 inches

Working Decimal Equivalent

21.000 x 6.500 inches533.4 x 165.1 mm

Weight lbs/ft

50.0 lbs/ft74.4082 kg/m

Depth of Section - A

20.83 inches529.082 mm

Flange Width - B

6.530 inches165.862 mm

Average Flange Thickness - C

0.535 inches13.589 mm

Web Thickness - D

0.380 inches9.652 mm

Weight per 40 ft. Length

2000 lbs906 kg

Weight per 50 ft. Length

2500 lbs1132.5 kg

Weight per 60 ft. Length

3000 lbs1359 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