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Ive read a few posts recommending 1144 for crank shafts for its strength, good machining qualities & reduced likelyhood to post-machining stress relief? warpage. Ive also read where people complain about 12L14, that despite its nice machining qualities, will show rust after a while.
My question is, what is in 1144 that would make it much different that 12L14 from the corrosion standpoint?
Is it the Manganese? The contents appear similar. 1144 has 1.35-1.65%, 12L14 has 0.85 - 1.15% according to this link. Are their other ingredients in either steel that influence this?
http://www.onlinemetals.com/steelguide.cfm
Also (not that I'm advocating 12L14 for crankshafts) what makes it 'ok' and not have rust problems when its used for cylinders & liners as it appears to be called for in various designs?
My question is, what is in 1144 that would make it much different that 12L14 from the corrosion standpoint?
Is it the Manganese? The contents appear similar. 1144 has 1.35-1.65%, 12L14 has 0.85 - 1.15% according to this link. Are their other ingredients in either steel that influence this?
http://www.onlinemetals.com/steelguide.cfm
Also (not that I'm advocating 12L14 for crankshafts) what makes it 'ok' and not have rust problems when its used for cylinders & liners as it appears to be called for in various designs?