STEEL - Materials for Civil and Construction Engineers - page 100

T ABLE 3.2 Designations, Properties, and Composition of ASTM Structural Steel

F u 1 Typical Chemical Composition 1

Elon-

F y

S teel Type

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gation 2 ASTM designation (psi) (psi) C u n P S i r i o V

A36 36 58-80 23 0.26 0.2 0.75 0.04 0.05

A53 Gr. B 35 60 0.25 0.4 0.95 0.05 0.045 0.4 0.4 0.15 0.08

42 58

Gr. B 23 0.3 0.18 0.05 0.63

46 58

A500

Carbon 46 62

Gr. C 21 0.27 0.18 1.4 0.05 0.063

50 62

A501 36 58 23 0.3 0.18 0.15 0.63

Gr.50 50 65-100

A529

19 0.27 0.2 1.35 0.04 0.05

Gr.55 55 70-100

Gr. 42 42 60 24 0.21 - 1.35 0.04 0.05

Gr. 50 50 65 21 0.23 - 1.35 0.04 0.05

A572

Gr. 55 55 70 0.25 - 1.35 0.04 0.05

Gr. 60 60 75 18 0.26 - 1.35 0.04 0.05

Gr. 65 65 80 17 0.26 - 1.35 0.04 0.05

High-strength
Low-alloy

A618 Gr. I&II 50 70 22 0.2 0.2 1.35 0.04 0.05

Gr. III 50 65 22 .023 - 1.35 0.04 0.05 0.3

A913 50 50 60 21 0.12 0.45 1.60 0.04 0.03 0.25 0.25 0.4 0.07 0.06

65 65 80 17 0.35 0.35 1.60 0.04 0.03 0.25 0.25 0.4 0.07 0.06

0.5- 3

A992 50-65 65 18 0.232 0.60 0.35 0.45 0.45 0.15 0.11

0.15

A242 50 50 70 18 0.15 0.2 1.0 0.15 0.05

Corrosion resistant,
High-strength
low-alloy

50 70 21 0.19 0.2- 0.25- 0.04 0.05 0.04 0.4- 0.02-

A588

0. 1 0.4 1.35 0.7

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Minimum unless range or other control noted.
Two-inch gauge length.
A maximum-yield-to-tensile-strength ratio of 0.85 and carbon equivalent formula are included as mandatory in ASTM 992.
Several steel specifications can include a minimum copper content to provide weather resistance.

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