Sand Mold Casting Tolerances - Stainless Steel Tube

Sand mold casting tolerances may vary considerably depending upon the type of metal used. A general comparison of casting tolerances is given in the following table.

Metal	Tolerance ±in./ft*
Aluminum Alloys	1/32
Cast Iron	3/64
Copper Base Alloys	3/32
Cast Steel	1/16
Magnesium Alloys	1/32
Malleable Iron	1/32
* Note on parting line influence: When parting lines are considered, very close tolerances are difficult to obtain. A parting line absorbs fractions of inches per inch. A foundry is doing well to hold a parting line to 0.015 in. Additional measurement is added to the casting tolerance.

Releated References:
Casting
Sand Mold Casting Tolerances
Metal Casting Comparison Table
Metal Casting Processes Comparison Table
BS 6615 ISO 8062 Rough Casting Tolerance
ISO8062 BS6615 Iron Steel Rough Casting Tolerance Standard