| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferro alloy for casting which can be used for the materials of a building of steel frame construction, and has excellent impact properties and longitudinal elastic coefficients after molding, and a manufacturing method thereof.SOLUTION: A ferro alloy for casting includes, in a weight ratio, C:1.7-2.0%, Si:0.9-2.0%, and Mg:0.015-0.040%, and its composition comprising the balance of Fe with inevitable elements substantially. The ferro alloy includes a matrix structure comprising a ferrite phase, and spheroidal graphite in the matrix structure. |
