SIZE

In the ounces to tons range are common.

SURFACE FINISH

Normally in the 200-1000 rms range.

WALL THICKNESS

Minimum section thickness of .125" - .175".

GENERAL TOLERANCES

General overall tolerances of ±.030 in. for dimensions up to 6 in. with an additional .003 in. for each inch over 6 in. can be held for concentricity, flatness, straightness, and mismatch, but this is considered to be the minimum and more liberal tolerances should be specified whenever practical.

CORED HOLES

For the normal foundry process, holes with diameters smaller than 1/4 in. generally are not cast but are machined as a post-casting operation.

ALLOYS

Wide range of ferrous and non-ferrous alloys.

DRAFT

Typically 1-5 degrees draft.

FILLETS

Adequate fillets at all wall intersections and at all angles where bosses or depressions are involved are almost mandatory for the proper flow of metal.  Sharp angles weaken the castings and may cause cracks during solidification or removal from mold. 

MECHANICAL PROPERTIES

Tensile-Yield-Elongation – as per the appropriate commercial and military specifications. 

DELIVERY

Samples 2 to 8 weeks.  Production 1 to 6 weeks after approval. 

TYPICAL APPLICATIONS

A large variety of applications throughout various industries for sand castings where volumes are generally low to medium and certain complexities, metallurgical properties and/or sizes are required.