High Hardness Low Thermal Expansion Cast Iron Alloy

摘要

The present invention relates to a low thermal expansion casting alloy having castability, machinability, and high hardness, wherein carbon is 1.5-3.0%, silicon is 0.4-2.0%, manganese is 1.0% or less, and nickel is 28.0-36.0% by weight distribution. Vanadium is 1.0-5.0%, molybdenum is in the range of 0.1-5.0% high hardness low thermal expansion cast iron alloy, characterized in that it contains other iron and impurity elements.