A356.0ALUMINIUMCASTINGALLOY.PDFVIP

A356.0 ALUMINIUM CASTING ALLOY (7Si-0.3Mg) Specifications AMS. 356.0: 4217, 4260, 4261, 4284, 4285, 4286, A356.0: 4218 Former ASTM. 356.0, SG70A; A356.0, SG70B SAE. 356.0: J452, 323 UNS number. 356.0: A03560. A356.0: A13560 Government. 356.0: QQ-A-601, QQ-A-596. A356.0: MIL-C-21180 (Class 12) Foreign. ISO:AlSi7Mg Chemical Composition Composition limits. 356.0: 0.25 Cu max, 0.20 to 0.45Mg, 0.35 Mn max, 6.5 to 7.5 Si, 0.6 Fe max, 0.35 Zn max, 0.25 Ti max, 0.05 other (each) max, 0.15 others (total) max, bal Al. A356.0: 0.20 Cu max, 0.25 to 0.45 Mg, 0.10 Mn max, 6.5 to 7.5 Si, 0.20 Fe max, 0.10 Zn max, 0.20 Ti max, 0.05 other (each) max, 0.15 others (total) max, bal Al. Consequence of exceeding impurity limits. High copper or nickel decreases ductility and resistance to corrosion. High iron decreases strength and ductility. Applications Typical uses. 356.0 aircraft pump parts, automotive transmission cases, aircraft fittings and control parts, water-cooled cylinder blocks. Other applications where excellent castability and good weldability, pressure tightness, and good resistance to corrosion are required. A356.0: aircraft structures and engine controls, nuclear energy installations, and other applications where high-strength permanent mold or investment castings are required. Mechanical Properties 0.2%. Proof Stress (N/mmo) 185 Tensile stress (N/mm_) 230 Elongation (%) 2 Impact - Brinell Hardness 75 Endurance Limit 56 Modulus of Elasticity 71 Shear strength 120 Properties in excess of those quoted can be obtained with Strontium additions e.g.- Elongation 5% Mass Characteristics Density. 2.685 g/cm_ (0.097 lb/in_) at 20oC (68oF) Thermal Properties Liquidus temperature. 615oC (1135oF) Solidus temperature. 555oC (1035oF) Coefficient of linear thermal expansion. Temperature range