SHELLCAST FOUNDRIES INC.

Typical Investment Casting Drawing notes

  1. Material: Aluminum Alloy A-356-T6 per MIL-A-21180 .

  2. Mechanical properties in accordance with MIL-A-21180 CL: 12; except properties to be obtained from seperately cast test bars.

  3. Radiographic inspections in accordance with MIL-STD-2175 CL: 3 GR: C.

  4. Normal I.C.I tolerances ±.010" up to 1", for each additional inch thereafter ±.003" to a MAX variation of ± .040".
  5. Surface finish to be 125 rms or better.

  6. Unless otherwise specified:
    All fillet radii to be .060" MAX.
    All corner radii to be .060" MAX.

  7. Angular tolerance ±30'.

  8. Cosmetic weld repair in accordance with MIL-STD-2219.

  9. a) Identifies Datum Points.
    b)Dimensions to be taken from datum points.
    c)Position of A-1, A-2, A-3, B-1, B-2, C-1 should be basic.