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ASTM – 588

ASTM A588 is a kind of HSLA steel (high-strength, low-alloy) covering small amount of alloy elements – copper, chromium & nickel. These alloy elements effectively improve A588 properties and enlarge its applications. First, alloy composition adds its yield point strength to 50ksi and tensile strength to 70ksi. Second, with copper content, A588 has good atmosphere corrosive resistance and work for a longer time. Give its excellent comprehensive properties, A588 steel angle iron is extensively used in bridge, building and other structural applications.

A588 structural steel angle has equal or unequal legs. You can find the details in the table below. If your record is for special steel angle size, email us your customized size when your order is equal or bigger than our minimum quantity.

A588 steel angle description:

  • Steel grade: A588.
  • Specification: ASTM A588.
  • Technology: hot rolled.
  • Type: equal & unequal.
  • Length: 6 m, 9 m, 12 m or per your request.
  • Equal angle:
    • Size: 20 × 20 mm – 200 × 200 mm.
    • Thickness: 3 to 22 mm.
    • Length: 6 m, 9 m, 12 m or per your request.
  • Unequal angle:
    • Size: 20 × 30 to 90 mm × 250 mm.
    • Thickness: 3 to 15 mm.
    • Length: 6 m, 9 m, 12 m or per your request.

ASTM A588 steel angle benefits & features:

  • Containing small amount of chromium, copper & nickel.
  • Lower weight/strength ratio.
  • Resistant to atmosphere corrosion.
  • Ideal for high strength and weather-exposed applications.
  • Alloy amount can be ordered for unique purpose.
  • Cost less in the long term.

What is the difference between A588 to carbon steel A36?

  • ASTM A588 is a high strength low-alloy structural steel, while A36 is just carbon steel.
  • Due to the difference in chemical content, A588 angle steel has more applications than mild A36 angle bar.
  • A588 angle iron ideal for corrosive environments without further surface treatment which reduces cost effectively.
  • A588 angle steel bar with higher yield strength point than A36, which allows for light weight for the same condition.

Chemical composition (heat analysis)

Steel grade

Carbon, max, %

Manganese, %

Phosphorus, max, %

Sulfur, max, %

Silicon, %

Nickel, max,  %

Chromium, %

Copper

Vanadium, %

A588 Grade A

0.19

0.80 – 1.25

0.04

0.05

0.30 – 0.65

0.40

0.40 – 0.65

0.25 – 0.40

0.02 – 0.10

  •  

Mechanical property:

Steel grade

Styles

Tensile strength, ksi [MPa]

Yield point, min, ksi [MPa]

Elongation in 8 in. [200 mm], min, %

Elongation in 2 in. [50 mm], min, %

A588 Grade A

Steel angles

70 [485]

50 [345]

18

21

  • ASTM A588 Equal Angle Steel Size:

A588-50 equal angle steel specification

Item

Leg 1 (mm)

Leg 2 (mm)

Thickness (mm)

Weight (kg/m)

Item

Leg 1 (mm)

Leg 2 (mm)

Thickness (mm)

Weight (kg/m)

EA588001

20

20

3

0.889

EA588045

80

80

7

8.525

EA588002

20

20

4

1.145

EA588046

80

80

8

9.658

EA588003

25

25

3

1.124

EA588047

80

80

10

11.874

EA588004

25

25

4

1.459

EA588048

90

90

6

8.35

EA588005

30

30

3

1.373

EA588049

90

90

7

9.656

EA588006

30

30

4

1.786

EA588050

90

90

8

10.946

EA588007

35

35

3

1.578

EA588051

90

90

10

13.476

EA588008

35

35

4

2.072

EA588052

90

90

12

15.94

EA588009

35

35

5

2.551

EA588053

100

100

6

9.5296

EA588010

40

40

3

1.852

EA588054

100

100

7

10.83

EA588011

40

40

4

2.422

EA588055

100

100

8

10.276

EA588012

40

40

5

1.976

EA588056

100

100

10

15.12

EA588013

44

44

3

2.002

EA588057

100

100

12

17.898

EA588014

44

44

4

2.638

EA588058

100

100

14

20.611

EA588015

38

38

3

1.719

EA588059

100

100

16

23.257

EA588016

38

38

4

2.261

EA588060

110

110

7

11.928

EA588017

48

48

3

2.19

EA588061

110

110

8

13.532

EA588018

48

48

4

2.889

EA588062

110

110

10

16.69

EA588019

48

48

5

3.572

EA588063

110

110

12

19.782

EA588020

50

50

3

2.332

EA588064

110

110

14

22.809

EA588021

50

50

4

3.059

EA588065

125

125

8

15.504

EA588022

50

50

5

3.77

EA588066

125

125

10

19.133

EA588023

50

50

6

4.465

EA588067

125

125

12

22.692

EA588024

56

56

3

2.624

EA588068

125

125

14

26.193

EA588025

56

56

4

3.446

EA588069

140

140

10

21.488

EA588026

56

56

5

4.251

EA588070

140

140

12

25.522

EA588027

56

56

6

6.568

EA588071

140

140

14

29.49

EA588028

63

63

4

3.907

EA588072

140

140

16

33.393

EA588029

63

63

5

4.822

EA588073

160

160

10

24.724

EA588030

63

63

6

5.721

EA588074

160

160

12

29.391

EA588031

63

63

8

7.469

EA588075

160

160

14

33.987

EA588032

63

63

10

9.151

EA588076

160

160

16

38.518

EA588033

70

70

4

4.372

EA588077

180

180

12

33.159

EA588034

70

70

5

5.397

EA588078

180

180

14

35.383

EA588035

70

70

6

6.406

EA588079

180

180

16

43.452

EA5880529

70

70

7

7.398

EA588080

180

180

18

48.634

EA588037

70

70

8

8.373

EA588081

200

200

14

42.894

EA588038

75

75

5

5.818

EA588082

200

200

16

48.56

EA588039

75

75

6

6.905

EA588083

200

200

18

54.501

EA588040

75

75

7

7.976

EA588084

200

200

20

60.056

EA588041

75

75

8

9.03

EA588085

200

200

22

71.168

EA588042

75

75

10

11.089

Length = 6 – 12 meters

EA588043

80

80

5

6.211

EA588044

80

80

6

7.376

  • ASTM A588 Unequal Angle Steel Size:

A588-50 unequal angle steel specification

Item no.

Leg 1 (mm)

Leg 2 (mm)

Thickness (mm)

Weight (kg/m)

Item no.

Leg 1 (mm)

Leg 2 (mm)

Thickness (mm)

Weight (kg/m)

UEA588001

30

20

3

1.14

UEA588045

100

50

6

6.98

UEA588002

30

20

4

1.49

UEA588046

100

50

8

9.16

UEA588003

40

20

3

1.38

UEA588047

100

50

10

11.3

UEA588004

40

20

3

1.8

UEA588048

100

65

7

8.96

UEA588005

40

25

4

1.97

UEA588049

100

65

8

10.2

UEA588006

45

30

4

2.3

UEA588050

100

65

9

11.3

UEA588007

45

30

5

2.82

UEA588051

100

65

10

12.5

UEA588008

50

30

5

3.02

UEA588052

100

75

7

9.52

UEA588009

50

30

6

3.58

UEA588053

100

75

8

10.8

UEA588010

50

40

4

2.77

UEA588054

100

75

9

12.1

UEA588011

50

40

5

3.42

UEA588055

100

75

10

13.3

UEA588012

50

40

6

4.03

UEA588056

100

75

11

14.6

UEA588013

60

30

5

3.43

UEA588057

100

75

12

15.8

UEA588014

60

30

6

4.06

UEA588058

120

80

8

12.4

UEA588015

60

30

7

4.68

UEA588059

120

80

10

15.3

UEA588016

60

40

5

3.83

UEA588060

120

80

12

18.2

UEA588017

60

40

6

4.54

UEA588061

130

65

8

12.1

UEA588018

60

40

7

5.24

UEA588062

130

65

10

14.9

UEA588019

65

50

5

4.43

UEA588063

130

65

12

17.7

UEA588020

65

50

6

5.26

UEA588064

130

75

8

12.7

UEA588021

65

50

7

6.08

UEA588065

130

75

10

15.7

UEA588022

65

50

8

6.88

UEA588066

130

75

12

18.6

UEA588023

75

50

5

4.83

UEA588067

130

90

10

17

UEA588024

75

50

6

5.75

UEA588068

130

90

12

20.1

UEA588025

75

50

7

6.65

UEA588069

150

75

9

15.7

UEA588026

75

50

8

7.53

UEA588070

150

75

10

17.4

UEA588027

75

50

9

8.4

UEA588071

150

75

11

18.9

UEA588028

75

55

5

5.04

UEA588072

150

75

12

20.6

UEA588029

75

55

7

6.93

UEA588073

150

90

10

18.6

UEA588030

75

65

6

6.49

UEA588074

150

90

12

22

UEA588031

75

65

8

8.48

UEA588075

150

90

15

27.1

UEA588032

75

65

10

10.5

UEA588076

150

100

10

19.3

UEA588033

80

40

6

5.51

UEA588077

150

100

12

23

UEA588034

80

40

8

7.21

UEA588078

150

100

14

26.6

UEA588035

80

60

6

6.49

UEA588079

160

80

10

18.5

UEA5880529

80

60

7

7.5

UEA588080

160

80

12

22

UEA588037

80

60

8

8.48

UEA588081

160

80

14

25.4

UEA588038

80

65

6

6.73

UEA588082

200

100

10

23.4

UEA588039

80

65

8

8.82

UEA588083

200

100

12

27.8

UEA588040

80

65

10

10.9

UEA588084

200

100

15

34.4

UEA588041

90

65

6

7.22

UEA588085

250

90

10

26.6

UEA588042

90

65

7

8.32

Material: ASTM A588 Length = 6 – 12 meters

UEA588043

90

65

8

9.44

UEA588044

90

65

10

11.7

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