Cast iron with niobium and component

摘要

An iron-based alloy comprises (in weight%) silicon (2-4.5, preferably 2.3-3.9), carbon (2.9-4, preferably 3.2-3.7), niobium (0.05-0.7, preferably 0.05-0.6), molybdenum (0.3-1.5, preferably 0.4-1), cobalt (0.1-2, preferably 0.1-1), manganese (0.3 or less, preferably 0.15-0.3), nickel (0.5 or less, preferably 0.3), magnesium (0.07 or less, preferably 0.03), phosphorus (0.05 or less, preferably 0.02-0.035), sulfur (0.012 or less, preferably 0.005), chromium (0.1 or less, preferably 0.05), antimony (0.004 or less, preferably 0.003), and remainder of iron.