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Linear Tolerances

 

Pressure Die Casting

Gravity Die Casting

Sand Casting

Length of Dimension A

Aluminium

Zinc

Aluminium or Zinc

Aluminium, Zinc or Copper

Basic Tolerance up to 25mm

± 0.075

± 0.05

± 0.4

-

Basic Tolerance up to 150mm

-

-

-

± 0.75

Additional Tolerance for each further 25mm

± 0.04

± 0.025

± 0.05

± 0.075

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.

Notes for Designers of Non-Ferrous Castings

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