ASTM A500 Structural Steel Tubes are cold-formed carbon steel tubes commonly used in several industries. They need to be super strong and precise. These tubes are made to have a minimum yield strength up to 46 ksi (317 MPa) and a tensile strength up to 62 ksi (427 MPa), making them dependable for structural and mechanical uses. Their strength varies by grade. You can get these tubes in round, square, or rectangular shapes. They're used a lot in frameworks for buildings, bridges, industrial structures, towers, and other big engineering projects. Because of their great strength and low weight, plus their ability to resist corrosion, they work well outdoors and indoors. We at usapipingsolution provide top-grade tubes in different sizes and thicknesses to fit various projects. Plus, we stick to international standards for quality and performance.
Specifications of ASTM A500 Structural Steel Tubes
| Category | Specification Details |
|---|---|
| Standard | ASTM A500 / ASME SA500 |
| Available Grades | Grade A, Grade B, Grade C, Grade D |
| Size Ranges | Square Pipes: 10 x 10 mm – 800 x 800 mm Round Pipes (Grade B): O.D. 13.7 mm – 1214 mm Rectangular Pipes (Grade B): 10 x 20 mm – 400 x 800 mm |
| Round Tubing Wall Thickness | 1.0 mm – 40 mm |
| Type | Welded, ERW, Seamless, Fabricated |
| Ends | Screwed, Beveled, Threaded, Plain |
| Length | 6 Meter – 12 Meter, or Cut to length |
| Surface Finish | Black Phosphating, Hairline, Shot Blasting, Anti-Corrosive, Galvanized |
| Delivery Condition | Annealed & Pickled, Polished, Bright & Annealed, etc. |
Physical Properties of ASTM A500 Structural Steel Tubes
| Property | Grade A | Grade B | Grade C | Grade D |
|---|---|---|---|---|
| Yield Strength — Round (min, ksi) | 33,000 | 42,000 | 46,000 | 36,000 |
| Yield Strength — Shaped (min, ksi) | 39,000 | 46,000 | 50,000 | 40,000 |
| Tensile Strength (min, ksi) | 45,000 | 58,000 | 62,000 | 58,000 |
Equivalent International Standards of ASTM A500 Structural Steel Tubes
| ASTM A500 | EN Equivalent | ISO | Australian (AS) | Indian (IS) |
|---|---|---|---|---|
| Grade B (round) | EN 10219-1 S275J0H | ISO 657-14 | AS 1163 Grade C350L0 | IS 4923 Grade YSt 310 |
| Grade C (shaped) | EN 10219-1 S355J2H | ISO 657-14 | AS 1163 Grade C450L0 | IS 4923 Grade YSt 355 |
Types of ASTM A500 Structural Steel Tubes
A500 vs A53 vs A513 Comparison Table
| Criterion | ASTM A500 | ASTM A53 | ASTM A513 |
|---|---|---|---|
| Product Type | Cold-formed structural HSS | Welded / seamless steel pipe | Mechanical tubing (ERW/DOM) |
| Primary Use | Structural frames, columns, HSS | Pressure pipe, structural pipe | Precision mechanical / automotive |
| Shape | Round, square, rectangular | Round only | Round only |
| Grade Range | A, B, C, D | A, B | 1010–1026 and alloy grades |
| Max YS (shaped) | 50 ksi (Grade C) | 35 ksi (Grade B) | Varies by grade |
| Dimensional Tolerance | ASTM A500-21 Section 9 | ASTM A53 Section 9 | Tighter: ASTM A513 Section 9 |
| Hydrostatic Test | Not required | Required | Not required |
| Typical Application | Building/bridge steel, towers | Water, gas, structural pipe | Automotive, appliances, machinery |
ASTM A500 Structural Steel Tubes Dimension Chart
| Size (mm) (Width x Height x Thickness) | Weight (kg/m) | Size (mm) (Width x Height x Thickness) | Weight (kg/m) |
|---|---|---|---|
| 40 x 20 x 2.0 | 1.68 | 90 x 50 x 3.6 | 7.46 |
| 40 x 20 x 2.5 | 2.03 | 90 x 50 x 5.0 | 10.11 |
| 40 x 20 x 3.0 | 2.36 | 100 x 50 x 2.5 | 5.63 |
| 40 x 25 x 1.5 | 1.44 | 100 x 50 x 3.0 | 6.75 |
| 40 x 25 x 2.0 | 1.89 | 100 x 50 x 4.0 | 8.86 |
| 40 x 25 x 2.5 | 2.23 | 100 x 50 x 5.0 | 10.90 |
| 50 x 25 x 2.0 | 2.21 | 100 x 60 x 3.0 | 7.22 |
| 50 x 25 x 2.5 | 2.72 | 100 x 60 x 3.6 | 8.59 |
| 50 x 25 x 3.0 | 3.22 | 100 x 60 x 5.0 | 11.70 |
| 50 x 30 x 2.5 | 2.92 | 120 x 80 x 2.5 | 7.65 |
| 50 x 30 x 3.0 | 3.45 | 120 x 80 x 3.0 | 9.03 |
| 50 x 30 x 4.0 | 4.46 | 120 x 80 x 4.0 | 12.00 |
| 50 x 40 x 3.0 | 3.77 | 120 x 80 x 5.0 | 14.80 |
| 60 x 40 x 2.0 | 2.93 | 120 x 80 x 6.0 | 17.60 |
| 60 x 40 x 2.5 | 3.71 | 120 x 80 x 8.0 | 22.90 |
| 60 x 40 x 3.0 | 4.39 | 150 x 100 x 5.0 | 18.70 |
| 60 x 40 x 4.0 | 5.72 | 150 x 100 x 6.0 | 22.30 |
| 70 x 50 x 2.0 | 3.56 | 150 x 100 x 8.0 | 29.10 |
| 70 x 50 x 2.5 | 4.39 | 150 x 100 x 10.0 | 35.70 |
| 70 x 50 x 3.0 | 5.19 | 160 x 80 x 5.0 | 18.00 |
| 70 x 50 x 4.0 | 6.71 | 160 x 80 x 6.0 | 21.30 |
| 80 x 40 x 2.5 | 4.26 | 160 x 80 x 8.0 | 27.90 |
| 80 x 40 x 3.0 | 5.34 | 200 x 100 x 5.0 | 22.70 |
| 80 x 40 x 4.0 | 6.97 | 200 x 100 x 6.0 | 27.00 |
| 80 x 40 x 5.0 | 8.54 | 200 x 100 x 8.0 | 35.40 |
| 80 x 50 x 3.0 | 5.66 | 200 x 100 x 10.0 | 43.60 |
| 80 x 50 x 4.0 | 7.34 | 250 x 150 x 5.0 | 30.50 |
| 90 x 50 x 3.0 | 6.28 | 250 x 150 x 6.0 | 38.20 |
| 250 x 150 x 8.0 | 48.00 | 300 x 200 x 10.0 | 75.00 |
| 250 x 150 x 10.0 | 59.30 | 400 x 200 x 8.0 | 73.10 |
| 300 x 200 x 6.0 | 48.10 | 400 x 200 x 10.0 | 90.70 |
| 300 x 200 x 8.0 | 60.50 | 400 x 200 x 16.0 | 142.00 |
Weight Chart of ASTM A500 Structural Steel Tubes
| Outer Diameter O.D. (mm) | Wall Thickness W.T. (mm) | Outer Diameter O.D. (mm) | Wall Thickness W.T. (mm) |
|---|---|---|---|
| 15 x 15 | 0.6 – 1.5 | 120 x 120 | 1.7 – 5.75 |
| 20 x 20 | 0.6 – 2.5 | 125 x 125 | 2.75 – 5.75 |
| 25 x 25 | 0.6 – 3.0 | 130 x 130 | 4.0 – 5.75 |
| 30 x 30 | 0.6 – 4.0 | 140 x 140 | 2.75 – 5.75 |
| 40 x 40 | 0.7 – 5.0 | 150 x 150 | 2.5 – 9.75 |
| 50 x 50 | 0.7 – 5.75 | 160 x 160 | 3.0 – 9.75 |
| 60 x 60 | 0.7 – 5.75 | 180 x 180 | 3.0 – 9.75 |
| 70 x 70 | 1.0 – 5.75 | 200 x 200 | 3.5 – 11.75 |
| 75 x 75 | 1.3 – 5.75 | 250 x 250 | 3.75 – 11.75 |
| 80 x 80 | 1.3 – 5.75 | 300 x 300 | 4.75 – 11.75 |
| 90 x 90 | 1.5 – 5.75 | 350 x 350 | 7.75 – 11.75 |
| 100 x 100 | 1.2 – 5.75 | 400 x 400 | 7.75 – 11.75 |
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Applications Uses of ASTM A500 Structural Steel Tubes
Frequently Asked Questions
What is the difference between ASTM A500 and ASTM A53?
ASTM A53 is designed for pressure and fluid transport (like water, oil, or gas) and is hydrostatically tested. ASTM A500 is specifically a structural specification used for structural support, building frames, and architectural applications. A500 offers higher yield strength and tighter aesthetic tolerances but is not pressure-tested.
What shapes does ASTM A500 come in?
It is available in cold-formed round, square, and rectangular Hollow Structural Sections (HSS).
Is ASTM A500 seamless or welded?
It covers both. However, the vast majority produced and utilized in the market is Electric Resistance Welded (ERW) due to its cost-efficiency for structural applications.
What is the difference between ASTM A500 Grade B and Grade C?
Grade C is the most predominant and stronger option. Grade C has a lower maximum carbon content but offers higher minimum yield strength (50 ksi for shaped sections) compared to Grade B (46 ksi for shaped sections). Most domestic manufacturers produce “dual-graded” material that meets both.
What is the difference between ASTM A500 and ASTM A513?
A500 is used for heavy load-bearing structural applications. A513 is a mechanical tubing specification meant for highly precise manufacturing (consumer appliances, automotive parts) where tight dimensional tolerances and smooth surface finishes (like DOM tubing) are required.
Mill-certified stock. Grade A / B / C / D available. Round, Square & Rectangular HSS. Full MTR documentation.
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