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ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square tube and rectangular tube shapes.
ASTM A500 steel pipes can be subjected to most of the usual fabricating operations. Ductility is good. It bends well, flattens, cuts, punches, flares and flanges easily, and can be welded by the commonly-used techniques and practices.
ASTM A500 Grade B
Applications: frames, roll cages, truck racks, trailers, railings, etc.
Workability: Easy to Weld, Cut, Form and Machine
Mechanical Properties: Brinell = 63, Tensile = 58,000 +/-, Yield = 46,000 +/-
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Pipe Size |
OD (inches) |
Schedule 10 |
Standard |
Schedule 40 |
XH |
Schedule 80 |
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¾” |
1.05 |
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1” |
1.315 |
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1 ¼” |
1.66 |
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1 ½” |
1.9 |
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2” |
2.375 |
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2 ½” |
2.875 |
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3” |
3.5 |
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3 ½” |
4 |
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4” |
4.5 |
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5” |
5.563 |
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6” |
6.625 |
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8” |
8.625 |
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10” |
10.75 |
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12” |
12.75 |
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14” |
14 |
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16” |
16 |
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18” |
18 |
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20” |
20 |
Available in schedules 10, 20 and 30. |
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TYPICAL CHEMICAL PROPERTIES
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Grade B |
Grade C |
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Carbon, Max % |
0.260 |
0.230 |
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Manganese, Max % |
---- |
1.350 |
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Phosphorus, Max % |
0.035 |
0.035 |
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Sulphur, Max % |
0.035 |
0.035 |
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Copper, when copper steel is specified, Min % |
0.200 |
0.200 |
TYPICAL MECHANICAL PROPERTIES
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Grade B |
Grade C |
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Tensile Strength, Min psi |
58,000 |
62,000 |
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Yield Strength, Min psi |
46,000 |
50,000 |
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Elongation in 2” Min |
23%* |
21%** |
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*.180” wall and over |
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**.120” wall and over |
Difference:
ASTM A500 round tube, ASTM A500 square tube and ASTM A500 rectangular tube are not different in terms of material and performance, most of which are differences in cross-sectional shape and use.
Square pipes are mostly used in the construction and machinery manufacturing industries;
The rectangular tube is widely used as a pipeline for transporting fluids and manufacturing mechanical parts and engineering structures, firearms and cannons.
Compared with the round tube, the square tube has high compressive strength, low weight, and a wide range of applications.
