What is the differnece between 38w vs 44w steel?

38W and 44W are designations for two different grades of structural steel, with 44W being stronger than 38W. The numbers in their designations refer to their minimum yield strength in kilopounds per square inch (ksi), with 38W having a minimum yield strength of 38 ksi and 44W having a minimum yield strength of 44 ksi. The choice between the two grades depends on the specific requirements of the application in terms of strength and performance.