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High Strength Steel A709 Gr.50W Sheets

ASTM A709 standard ASTM covers high strength, low allow structural steel available in shapes, plates, sheets and bars. A709 Gr.50W high strength steel sheets are widely used in bridges. A709 Gr.50W sheets and plates are characterized by atmospheric corrosion resistance. This property in most environments is substantially better than carbon steel with or without copper addition. ASTM A709 Gr.50W high strength low alloy steel plates wider than 24 in. [600 mm], the elongation requirement is reduced by two percentage points. A709 Gr.50W sheet elongation in 2 in. or 50 mm: 19 % for shapes with flange thickness over 3 in. [75 mm].
High Strength Steel ASTM A709 Sheets Properties:

Grade

Plate Thickness, in. [mm]

Structural Shape Flange or Leg Thickness, in. [mm]

Yield Point or Yield Strength,Bksi [MPa]

Tensile Strength, ksi [MPa]

Min. Elongation, %

Plates and BarsC,E

ShapesE

8 in. or 200 mm

2 in. or 50 mm

8 in. or 200 mm

2 in. or 50 mm

36 [250]

to 4 [100], incl

to 3 in. [75 mm], incl

36 [250] min

58-80 [400-550]

20

23

20

21

over 3 in. [75 mm]

36 [250] min

58 [400] min

-

-

20

19

50 [345]

to 4 [100], incl

all

50 [345] min

65 [450] min

18

21

18

21F

50S [345S]

G

all

50-65 [345-450]H,I

65 [450]Hmin

-

-

18

21

50W [345W] and HPS 50W [HPS 345W]

to 4[100], incl

all

50 [345] min

70 [485]

18

21

18

21J

HPS 70W [HPS 485 W]

to 4[100], incl

G

70 [485] minB

85-110 [585-760]

-

19K

-

-

HPS 100W [HPS 690 W]

to 2[65], incl

G

100 [690] minB

110-130 [760-895]

-

18K

-

-

over 2 to 4 [65 to 100], inclM

G

90 [620] minB

100-130 [690-895]

-

16K

-

-
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