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.

ASTM A588 HSLA steel angle – equal & unequal
ASTM A588 HSLA steel angle

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.
Note: Special angle steel sizes are available if your order quantity surpasses the minimum.

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 11.7A588 HSLA structural steel angle for communication tower.
White pre-lacquered A588 steel angle for communication tower.

A588 angle steel used in bridge constructions.
ASTM A588 structural angle for bridge.
If you are interested you can contact us via sales@steel-sections.com.