Hillman Weldable Cold Rolled Steel Round, 3/8 in. x 3 ft. is made from low carbon steel that has been processed in a cold solution to enhance its strength. This cold rolled steel is 50% stronger than hot rolled steel, making it an excellent choice for a variety of welding applications. It is commonly used as axles on all types of carts or wagons, ing durability and reliable performance in demanding conditions. Model Number: