Friction Coefficient

[sammybrock]

Our project requires testing worse case. In this case, that means locking up 4 cast iron wheels (10,000 lb load per wheel)then dragging them fully loaded on the 17-4pH rail they normally roll on. Does anyone know friction coefficients between cast iron and an age hardened martensitic stailess steel? Any other sourses for friction coefficients?

 

[Metalguy]

Your testing will provide the answer. but it *should* be somewhere around .25, or 10,000 lb. of pull required.