This being my first post, I would like to thank everyone for the vast library of knowledge within this site.
Just a quick question concerning the markings on the head of railroad spikes. I was given 18 random spikes that some have "HC" and others have "H" stamped on it. After researching online, I have found only the following info:
Through one of my e-mail contacts, I obtained a copy of the A.R.E.A. manual chapter that deals with Track Spikes. In essence, it identifies two versions of spikes, one soft-steel and one high-carbon. Soft-Steel spikes contain anywhere from a minimum of 0.06 to 0.20 percent carbon (reference sec. 2.1.3). The head of Soft-Steel spikes are marked with a letter or brand indicating the manufacturer (reference sec. 2.1.11). High-Carbon spikes contain anywhere from a minimum of 0.20 to 0.30 percent carbon (reference sec. 2.2.3) The head of High-Carbon spikes are marked with a letter or brand indicating the manufacturer and also the letters “HC” (reference sec. 2.2.11). If copper is added to either version, the head will be marked with the letters “CU” (reference sec. 2.1.11 & 2.2.11).
Now with that all said, would it be safe to assume that these spikes that I have, marked "H", are indeed high carbon?
Edited by William, 28 May 2008 - 09:08 PM.