What is A500 grade steel?
ASTM A500 (also known as A-500) Carbon Steel Pipe is the standard specification for cold-formed welded and seamless carbon steel structural pipe in round, square, and rectangular shapes. ASTM A500 Structural Steel Pipe is the most common specification for hollow structural sections (HSS) in North America.
ASTM A500 carbon steel structural pipe is a cold-formed welded and seamless carbon steel structural pipe. For steel pipes with a specified outer diameter not greater than 48.3mm, the change in the outer diameter shall not exceed 0.5%, and the specific value shall not exceed 0.13mm; It is stipulated that for steel pipes with an outer diameter greater than 50.8mm, the change in the outer diameter shall not exceed 0.75%, and the specific value shall not exceed 0.13mm.
In addition, there are corresponding requirements for the wall thickness of ASTM A500 steel pipes. The minimum wall thickness measured at any place shall not vary by more than 10% from the specified wall thickness. The maximum wall thickness, including the value measured at the weld, shall be consistent with the specified wall thickness. The change in ratio must not exceed 10%.
ASTM A500 structural pipe has the characteristics of high tensile strength, good yield strength, and stable chemical composition, so it is widely used in construction, machinery, automobiles, petroleum and other fields.
Chemical Requirements
| Composition, % | ||||
|---|---|---|---|---|
| Element | Grades A, B and D | Grace 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 |
| Phosphorus, max | 0.035 | 0.045 | 0.035 | 0.045 |
| Sulfur, max | 0.035 | 0.045 | 0.035 | 0.045 |
| Copper, when copper steel is specified, min |
0.20 | 0.18 | 0.20 | 0.18 |
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