ASTM A500 A36 A283 A572 Ss400 St37 St52 Black Iron Carbon Steel Sheet Manufacturer Supplier
The ASTM A500 standard specifies cold-formed welded and seamless carbon steel structural tube in round, square, and rectangular forms. It is widely specified for hollow structural parts in the United States, although the more severe CSA G40.21 is recommended in Canada. ASTM A501, a hot-formed counterpart of A500, is another similar standard. ASTM A500 classifies carbon steel into four classes based mostly on material strength.
This is a standard established by the standards organization ASTM International, a non-profit organization that develops voluntary technical standards for materials, products, systems, and services.
Density
A500 and A501 steels, like other carbon steels, have a specific gravity of around 7.85 and hence a density of about 7850 kg/m3 (0.284 pounds per cubic inch).
Grades
A500 cold-formed tubing comes in four grades based on chemical composition, tensile strength, and heat treatment. The yield strength requirements are higher for square and rectangular than for round tubing. The minimum copper content is optional. Grade D must be heat treated.
Grade | UNS | Composition (% by weight in heat) | Minimum strength requirements | |||||||
---|---|---|---|---|---|---|---|---|---|---|
C | Mn | P | S | Cu | tensile | yield (round) | yield (shaped) | elongation | ||
max % | max % | max % | max % | min % | MPa (ksi) | MPa (ksi) | MPa (ksi) | % | ||
A | K03000 | 0.26 | 1.35 | 0.035 | 0.035 | 0.20 | 310 (45) | 230 (33) | 270 (39) | 25 |
B | K03000 | 0.26 | 1.35 | 0.035 | 0.035 | 0.20 | 400 (58) | 290 (42) | 315 (46) | 23 |
C | K02705 | 0.23 | 1.35 | 0.035 | 0.035 | 0.20 | 425 (62) | 315 (46) | 345 (50) | 21 |
D | K03000 | 0.26 | 1.35 | 0.035 | 0.035 | 0.20 | 400 (58) | 250 (36) | 250 (36) | 23 |
Grade | Physical Properties | Mechanical Properties | ||||
---|---|---|---|---|---|---|
Density | Tensile Strength, Ultimate | Tensile Strength, Yield | ||||
gram/ cubic cm | lb/cubic in | MPa | psi | MPa | psi | |
A | 7.80 | 0.282 | 310 | 45000 | 270 | 39000 |
B | .305 | 400 | 58000 | 315 | 46000 | |
C | 425 | 62000 | 345 | 50000 | ||
D | 400 | 58000 | 250 | 36000 |
Samples