Hello everyone. I am new to blade smithing and a few weeks ago I have built a forge and bought a grinder and all the basic stuff I need. The blade is made from an old rr spike and I have basically finished the blade and I'm ready to quench. However I have quenched the blade twice in some old chain saw oil...the blade didn't harden....three times in motor oil....the blade didn't harden. Then I tried twice in water....the blade still didn't harden. I almost certain I brought the blade up to the proper temperature because it was glowing orange and it lost all magnetism. Despite all my attempts, the blade never hardened. I know that RR spikes have a very low carbon content, but from videos, forums, research, etc, they will harden. I don't understand why I can't get mine to harden. Any suggestions on how to proceed would be very helpful, thank you everyone