What is astm a500 grade a square tube yield strength
ASTM A500 GrA is an important steel standard developed by the American Society for Testing and Materials (ASTM), specifically for cold-formed and hot-formed seamless and welded square and rectangular tubes. This standard has been widely used in many fields such as construction, machinery manufacturing, and bridges, especially in load-bearing structures, where square tubes are favored due to their superior mechanical properties.
Chemical Composition (ASTM A500 Grade A)
| Element | Content Range (%) |
|---|---|
| C (Carbon) | ≤0.26 |
| Mn (Manganese) | ≤1.35 |
| P (Phosphorus) | ≤0.035 |
| S (Sulfur) | ≤0.035 |
| Cu (Copper) | ≥0.2 (when specified as copper steel) |
Mechanical Properties of ASTM A500 Grade A
| Property | Value Range (Typical) |
|---|---|
| Tensile Strength | 400–550 MPa |
| Yield Strength | ≥250 MPa |
| Elongation After Fracture | >20% |
| Impact Toughness | At room temperature to 0°F |
| Hardness | Brinell hardness value 137–155 |
A500 GRA is widely used in:
- Building Structures: As load-bearing components such as columns and beams in steel structures;
- Machinery and Equipment: Manufacturing equipment frames, conveyor tracks, and automated equipment supports;
- Bridge Engineering: Used as supporting structures for pedestrian bridges and smaller bridges;
- Warehouse Racking: As the material for the columns and beams of heavy-duty racking systems;
- Municipal Facilities: Traffic barriers, streetlight poles, and billboard supports, etc.
A500 GrA SHS Tube factory
