Method for producing Al-Si-Mg aluminum alloy casting material

摘要

A method for producing an Al-Si-Mg-based aluminum alloy casting material is provided. The manufacturing method of the Al-Si-Mg-based aluminum alloy for castings is 5 mass% to 10 mass% Si, 0.2 mass% to 1.0 mass% Mg, 0.03 mass% to 0 mass%. Al-Si-Mg-based aluminum alloy castings having an alloy composition containing Sb of 5 mass% or less and Be of 0.0004 mass% or more and 0.0026 mass% or less, with the balance being Al and inevitable impurities The material is heat treated.