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

44 lbs/ft65.479216 kg/m

Depth of Section - A

20.66 inches524.764 mm

Flange Width - B

6.500 inches165.1 mm

Average Flange Thickness - C

0.451 inches11.4554 mm

Web Thickness - D

0.348 inches8.8392 mm

Weight per 40 ft. Length

1760 lbs797.28 kg

Weight per 50 ft. Length

2200 lbs996.6 kg

Weight per 60 ft. Length

2640 lbs1195.92 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