Hope you dont mind me jumping in on this one I have been in the scrap business now for thirty years mostly working as a burner for large yards. Cutting scrap with a torch costs money per ton produced. A torch can also produce large amounts of weight in a short time making the scrap more profitable. Truck frames and axles are not that heavy and less than a semi load would cost you money to produce short steel. Ever cut a truck rear end filled full of oil with a torch ? makes and interesting light show. So the answer to your question is no. In your case,do you have access to a quickcut saw ? that way you can cut them apart enough to haul just my two canadian cents worth