What is Schedule 40 steel pipe used for？

In addition to different materials, pipe comes in a variety of sizes categorized by schedule. Schedule 40 steel pipe is one of the most common materials used in a wide variety of construction and building applications. From gas lines to water lines, schedule 40 steel pipe's characteristics, including diameter, strength and reactivity, make it a construction standard.

Schedule 40 steel pipe is typically made from a low-carbon or mild steel. These steels are typically categorized by having a carbon content less than .2 percent. However, for particular applications where a corrosion resistant material is needed, schedule 40 steel pipe may be galvanized, or plated with a layer of zinc to protect the underlying steel. 

Strength

According to the University of Massachusetts, the hardness of schedule 40 steel pipe was measured to be 16.1 on the Rockwell scale. It was also found to have a yield strength of 423 MPa, an ultimate strength of 470 MPa and an elastic modulus of 225 GPa.