Difference Between ASTM A513 and A500
The steel composition used in each standard is one of the biggest differences between ASTM A513 and A500. ASTM A513 is made from 1008-1015 steel, primarily composed of iron with a small percentage of carbon. This makes it perfect for applications where close dimensional tolerances and a smooth surface finish are essential. In contrast, A500 is made from a higher grade of steel known as A1085. A1085 has a higher carbon content than A513 and includes elements such as silicon and manganese. This means it is stronger, more durable, less malleable, and harder to bend.
Manufacturing Process
Another key difference between these two standards is the manufacturing process used to make them. ASTM A513 tubing is made by rolling a metal strip through a series of rollers until it reaches the desired shape. This is known as electric resistance welding (ERW). A500, on the other hand, is made using more advanced methods such as seamless or spiral welding. The result is a product that can withstand higher levels of stress and pressure.
Physical Properties
Regarding physical properties, A500 is the stronger of the two standards. It has a minimum yield strength of 50,000 psi compared to A513's minimum yield strength of 30,000 psi. A500 also has a higher tensile strength, which means it can withstand more pressure before breaking. This makes it ideal for applications where load-bearing capabilities are essential.
