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Linear Tolerances Affected by Movements

These tolerances must be provided in addition to the linear dimensional tolerances where a core or moving die part affects a dimension.

Linear Tolerances Affected By Movement

Projected Area of Casting	Pressure Die Cast
	Aluminium Alloy		Zinc Alloy
Up to 60 cm²	± 0.125mm		± 0.1mm
60 to 120 cm²	± 0.2mm		± 0.15mm
120 to 300 cm²	± 0.3mm		± 0.2mm
300 to 600 cm²	± 0.375mm		± 0.3mm
Projected Area of Casting	Gravity Die Cast			Sand Casting
	Aluminium or Zinc Alloy with Metal Core	Aluminium or Zinc Alloy with Sand Core		Aluminium Zinc or Copper Alloys
Up to 60 cm²	± 0.25mm	± 0.375mm		± 0.5mm
60 to 300 cm²	± 0.375mm	± 0.625mm		± 0.875mm
300 to 600 cm²	± 0.375mm	± 0.75mm		± 1.125mm
600 to 1500 cm²	± 0.55mm	± 1.0mm		± 1.5mm
1500 to 3000 cm²	± 0.8mm	± 1.5mm		± 2.25mm

The values shown represent production practice at the most economical level. Greater accuracy involving extra work or care in production should be specified only when and where necessary.