ASTM A500
ASTM A500 tube is a standard specification for cold-formed welded and seamless carbon steel structural tubing in round, square and rectangular shapes.
ASTM A500 covers cold-formed welded and seamless carbon steel round, square, rectangular, or special shape structural tubing for welded, riveted, or bolted construction of bridges and buildings, and for general structural purposes. This tubing shall be produced in both welded and seamless sizes and must have the chemical requirements of carbon, manganese, phosphorus, sulfur, and copper.
Chemical Requirements of ASTM A500uirements of ASTM A500
Composition, %
Grades A, B and D |
Grace C |
Element |
Heat |
Product |
Heat |
Product |
|
Analysis |
Analysis |
Analysis |
Analysis |
Carbon, max
Manganese, max
Phosphorus, max
Sulfur, max
Copper, when copper steel is specified, min
0.26 |
0.30 |
0.23 |
0.27 |
... |
... |
1.35 |
1.40 |
0.035 |
0.045 |
0.035 |
0.045 |
0.035 |
0.045 |
0.035 |
0.045 |
0.20 |
0.18 |
0.20 |
0.18 |
Round Structural Tubing Grade Grade A Grade B Grade C Grade D
Tensile strength, mn, ps( MPa) 45 000 |
58 000 |
62 00 |
58 000 |
( 310) |
( 400) |
( 427) |
( 400) |
Yield strength, mn, psi( MPa) 33 000 |
42 000 |
46 000 |
36 000 |
( 228) |
( 290) |
( 317) |
( 250) |
Elongation in 2 in.( 50.8 mm), min, % A 25B 23C 21D 23C