Join Date: Oct 2002
Location: Medway, MA
Bikes: 2011 Lynskey Sportive, 1988 Cannondale SM400
It is steel. Carbon and manganese are both commonly added to chrome-moly steel. If you are concerned about corrosion, make sure to keep the frame waxed and if you have the opportunity to strip the bike down, have the insides of the frame tubes treated with JP Weigle Frame Saver.
STAR 3 Spinning Instructor
2011 Lynskey Sportive (Shimano Ultegra 10s)
1988 Cannondale SM400 (Suntour XC-M 7s)