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

57 lbs/ft84.825348 kg/m

Depth of Section - A

21.06 inches534.924 mm

Flange Width - B

6.555 inches166.497 mm

Average Flange Thickness - C

0.650 inches16.51 mm

Web Thickness - D

0.405 inches10.287 mm

Weight per 40 ft. Length

2280 lbs1032.84 kg

Weight per 50 ft. Length

2850 lbs1291.05 kg

Weight per 60 ft. Length

3420 lbs1549.26 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