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ASTM A500 Structural Steel Pipe
ASTM A500 structural steel pipe includes ASTM A500 structural seamless steel pipe and ASTM A500 structural welded steel pipe.
Description
ASTM A500 structural steel pipe
ASTM A500 structural hollow section: round hollow section, square hollow section, rectangular hollow section.
ASTM A500 chemical composition and mechanical properties
Chemical requirements
Elements | Composition, % | |||
Grades A, B and D | Grade C | |||
Heat Analysis | Product Analysis | Heat Analysis | Product Analysis | |
Carbon, max* | 0.26 | 0.30 | 0.23 | 0.27 |
Manganese, max* | 1.35 | 1.40 | 1.35 | 1.40 |
Phosphorus, max | 0.035 | 0.045 | 0.035 | 0.045 |
Sulfur, max | 0.035 | 0.045 | 0.035 | 0.045 |
Copper, min** | 0.20 | 0.18 | 0.20 | 0.18 |
Remark: * For each reduction of 0.01 percentage point below the specified maximum for
carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 % by product analysis.
** If copper-containing steel is specified in the purchase order.
Tensile requirements
Round structural tubing | ||||
Grade A | Grade B | Grade C | Grade D | |
Tensile strength, min, psi (MPa) | 45000 (310) | 58000 (400) | 62000 (425) | 58000 (400) |
Yield strength, min, psi (MPa) | 33000 (230) | 42000 (290) | 46000 (315) | 36000 (250) |
Elongation in 2in.(50mm), min, % **** | 25 * | 23 ** | 21 *** | 23 ** |
Shaped structural tubing | ||||
Grade A | Grade B | Grade C | Grade D | |
Tensile strength, min, psi (MPa) | 45000 (310) | 58000 (400) | 62000 (425) | 58000 (400) |
Yield strength, min, psi (MPa) | 39000 (270) | 46000 (315) | 50000 (345) | 36000 (250) |
Elongation in 2in.(50mm), min, % **** | 25 * | 23 ** | 21 *** | 23 ** |
Remark: * Applies to specified wall thicknesses (t ) equal to or greater than 0.120 in. [3.05mm]. For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. [50 mm] = 56t + 17.5, rounded to the nearest percent. For A500M use the following formula: 2.2t + 17.5, rounded to the nearest percent.
** Applies to specified wall thicknesses (t ) equal to or greater than 0.180 in. [4.57mm]. For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. [50 mm] = 61t + 12, rounded to the nearest percent. For A500M use the following formula: 2.4t + 12, rounded to the nearest percent.
*** Applies to specified wall thicknesses (t ) equal to or greater than 0.120 in. [3.05mm]. For lighter specified wall thicknesses, the minimum elongation values shall be by agreement with the manufacturer.
**** The minimum elongation values specified apply only to tests performed prior to shipment of the tubing.
Industry Application of structural steel pipe
1. Construction and heavy equipment: Cranes, frames, rollover prevention structures (ROPS), various types of construction equipment-bulldozers, excavators, steam rollers, etc.
2. Agriculture: Cranes, frames, rollover prevention structures (ROPS), various types of agricultural equipment-combine harvesters, sprayers, harvesters, tractors, etc., greenhouse structures
3. Infrastructure: Pillars, bridges, buildings, towers, signs, awnings
4. Fluid handling: Pump seat, hydraulic support, gasket
5. Mechanical: Base frame
6. Oil and gas: Offshore drilling platform, offshore production equipment, tool rack
7. Energy: Solar bracket and base, solar bracket, power plant
8. General manufacturing and processing: Frames, gaskets, bases, many other conventional welding and machining applications
9. Automobile and transportation: Car and truck frame, trailer truck base, rail car, car rack, carport
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