TOLERANCES FOR PRESSURE DIECASTINGS (DIN 1688*) 1) Determining the spatial diagonal:  The spatial diagonal R is that between the extreme points of the casting. It is calculated from the nominal dimensions of the prismatic body, which delimits the casting, whatever its shape Table 1. Tolerances of dimensions for lengths, widths, heights, central distances, diameters and roundings. Spatial diagonal area Degree of exactitude Shape dependency Nominal Dimension Area up to 18 over 18 up to 30 over 30 up to 50 over 50 up to 80 over 80 up to 120 over 120 up to 180 over 180 up to 250 over 250 up to 315 over 315 up to 400 over 400 up to 500 over 500 up to 630 over 630 up to 800 over 800 up to 1000 over 1000 up to 1250 over 180 GTA 13 Intrinsic 60.14 60.17 60.20 60.23 60.27 60.32                 Non-Intrinsic 60.24 60.27 60.30 60.33 60.37 60.42                 over 50 up to 500 GTA 13/5 Intrinsic 60.17 60.20 60.25 60.30 60.35 60.40 60.45 60.50 60.55 60.60         Non-Intrinsic 60.32 60.35 60.40 60.45 60.50 60.55 60.60 60.65 60.70 60.75         over 180 GTA 14 Intrinsic 60.22 60.26 60.31 60.37 60.44 60.50 60.60 60.65 60.70 60.80 60.90 61.00 61.20 61.30 Non-Intrinsic 60.42 60.46 60.51 60.57 60.64 60.70 60.80 60.85 60.90 61.00 61.10 61.20 61.40 61.50 over 500 GTA 14/5 Intrinsic 60.25 60.35 60.40 60.45 60.55 60.65 60.75 60.80 60.85 60.95 61.10 61.20 61.40 61.60 Non-Intrinsic 60.55 60.65 60.70 60.75 60.85 60.95 60.95 61.10 61.10 61.20 61.40 61.50 61.70 61.90 Intrinsic dimensions are those in the same parts of the tool. Non-intrinsic dimensions are those created by the interaction of movable tool components, e.g. wall thickness and base thickness or dimensions affected by additives or extenders. *Important: We assume no liability for quoted standards. Table 2. Tolerances of dimensions for wall thicknesses, ledges and ribs. TOLERANCES FOR PRESSURE DIECASTING (DIN 1688)* CONTINUED Spatial diagonal area Degree of exactitude Shape dependency Nomial dimensional area up to 3 over 3 up to 6 over 6 up to 10 up to 180 GTA 13 Intrinsic 60.15 60.20 60.20 Non-Intrinsic 60.25 60.30 60.30 over 50 up to 500 GTA 13/5 Intrinsic 60.20 60.25 60.30 Non-Intrinsic 60.35 60.40 60.45 over 180 GTA 14 Intrinsic 60.25 60.30 60.35 Non-Intrinsic ±0.45 60.50 60.55 over 500 GTA 14/5 Intrinsic 60.30 60.40 60.45 Non-Intrinsic 60.55 60.65 60.70 Intrinsic dimensions are those in the same parts of the tool. Non-intrinsic dimensions are those created by the interaction of movable tool components, e.g. wall thickness and base thickness or dimensions affected by additives or extenders. TOLERANCES FOR CHILL CASTINGS DIN (1688)* In the case of raw castings made of light metal alloys in the chill casting process, all deviations in dimensions are essentially dependent on : a). the dimensional accuracy of the mold, characterized by the degree of accuracy b). the position of the mold division, cores, extenders, characterized by the subdivision into intrinsic and non-intrinsic dimensions (see DIN 1680 part 1) c). the nominal dimensions. Table 1. Deviations in lengthwise dimensions (lengths, widths, heights, central distances, diameters, roundings).  Degree of accuracy Shape dependency Nominal Dimension Area up to  18 over 18 up to 30 over 30 up to 50 over 50 up to 80 over 80 up to 120 over 120 up to 180 over 180 up to 250 over 250 up to 315 over 315 up to 400 over 400 up to 500 over 500 up to 630 over 630 up to 800 over 800 up to 1000 over 1000 up to 1250 GTA 15/5 Intrinsic ±0.45 ±0.50 ±0.60 ±0.75 ±0.85 ±1.00 ±1.20 ±1.30 ±1.40 ±1.60 ±1.70 ±2.00 ±2.30 ±2.60 Non-Intrinsic ±0.55 ±0.65 ±0.80 ±0.95 ±1.10 ±1.30 ±1.50 ±1.60 ±1.80 ±2.00 ±2.20 ±2.50 ±2.80 ±3.30 Table 2. Deviations in thickness (wall thicknesses, ledges, ribs). Degree of accuracy Shape dependency Nominal Dimension Area up to 6 over  6 up to 10 over 10 up to 18 GTA 15/5 Intrinsic ±0.60 ±1.20 ±1.80 Non-Intrinsic ±0.80 ±1.50 ±2.20 Intrinsic dimensions are those in the same parts of the tool. Non-intrinsic dimensions are those created by the interactions of movable tool components, e.g. wall thicknesses and base thicknesses or dimensions affected by additives or extenders.

Table 2 Tolerances for the wall thickness of full profiles

ABPH 800 (Hollow Profile)

Range of dimensions   over up to Tolerances for wall thickness - 1.5 ±0.15 1.5 3 ±0.20 3 6 ±025 6 10 ±0.30 10 15 ±0.40 15 20 ±050 20 30 ±0.60 30 40 ±0.70

ABPH 800 (Hollow Profile)

Range of dimensions Tolerances for the wall thickness with a circumscribing circle du   over 75 over 130 over 250 over up to to 75 to 130 to 250 to 300 - 1.5 ±0.20 ±0.25 - - 1.5 2 ±0.20 ±0.25 ±0.30 - 2 3 ±0.25 ±0.30 ±0.35 ±0.40 3 6 ±0.35 ±0.40 ±0.50 ±0.60 6 9 ±0.50 ±0.55 ±0.70 ±0.80 9 12 ±0.60 ±0.70 ±0.85 ±0.95 12 15 ±0.70 ±0.80 ±1.00 ±1.10 15 20 - ±1.00 ±1.20 ±1.30