383 Aluminum Alloy Die Castings Tensile and Fatigue Data

Die castings from the Briggs & Stratton  Corporation June 5, 2001 Die Casting Campaign were cut at the selected locations shown in Figure 1. The die casting conditions used to produce the castings have been previously reported in the highlighted section of this web page.

Figure 1. Locations of Mechanical Test Samples

Locations 1 and 2 are in the runners; location 3 is in the casting near the main gate; location 6 is in the casting about 160 mm (6.3 inch) from the main gate; and location 7 is in the casting near the overflows  and about 240 mm (9.4 inch) from the main gate. Locations 3, 6 and 7 have similar cross section areas and uniform thicknesses. Samples were cut from locations 3, 6 and 7 and machined as uniaxial tensile or fatigue samples with dimensions shown Figure 2.

Figure 2. Dimensions of the Mechanical Test Samples from Locations 3, 6 and 7

The dimensions of the tensile and fatigue samples were selected consistent with the recommended dimensions set forth in ASTM Standard for Tensile of Metallic Materials E-8. The normal thickness of the tensile and fatigue samples was 2.9 mm (0.114 inch)

After machining, selected samples were visually examined and subjected to X-ray radiography to assess their porosity and related defect occurrence. The number of machined samples rejected by x-ray and/or visual examination was listed in Table 1.

Table 1: Number and Percent Samples Rejected from Locations 3, 6, and 7.