Investment Casting VDG P690 Tolerance Calculator
VDG P690 Tolerance Calculator
Professional Investment Casting Tolerance Calculator
Calculate precise tolerances for different dimensions and features according to VDG P690 standard
Linear Dimensional Tolerance
Note: The nominal dimension range is determined by the length of the shorter side.
Angle Tolerance
Note: For radius > 120mm, use linear tolerance tables.
Radius of Curvature Tolerance
Note: Wall thickness tolerances depend on the smallest lateral length of the uninterrupted surface, not the accuracy grade.
Wall Thickness Tolerance
Standard Surface Roughness
Maximum Hole Dimensions
Maximum Slot Dimensions
Material Groups Information
Group D Materials
Alloys based on iron, nickel, cobalt and copper
Accuracy Grades: D1, D2, D3
Group A Materials
Alloys based on aluminium and magnesium
Accuracy Grades: A1, A2, A3
Group T Materials
Alloys based on titanium
Accuracy Grades: T1, T2, T3
Note: This calculator implements the complete VDG P690 standard for investment casting tolerances. For titanium alloys (Group T), accuracy grade 1 is generally applicable for angle and radius tolerances. Wall thickness tolerances are not dependent on accuracy grade but on surface dimensions.
