Casting factors.

CFR · 2024-01-01 · US · Title 14

(a) (b) (1) Need not exceed 1.25 with respect to bearing stresses regardless of the method of inspection used; and (2) Need not be used with respect to the bearing surfaces of a part whose bearing factor is larger than the applicable casting factor. (c) (1) A casting factor of 1.0 or greater may be used, provided that— (i) It is demonstrated, in the form of process qualification, proof of product, and process monitoring that, for each casting design and part number, the castings produced by each foundry and process combination have coefficients of variation of the material properties that are equivalent to those of wrought alloy products of similar composition. Process monitoring must include testing of coupons cut from the prolongations of each casting (or each set of castings, if produced from a single pour into a single mold in a runner system) and, on a sampling basis, coupons cut from critical areas of production castings. The acceptance criteria for the process monitoring inspections and tests must be established and included in the process specifications to ensure (ii) Each casting receives: (A) Inspection of 100 percent of its surface, using visual inspection and liquid penetrant or equivalent inspection methods; and (B) Inspection of structurally significant internal areas and areas where defects are likely to occur, using radiographic or equivalent inspection methods. (iii) One casting undergoes a static test and is shown to meet the strength and deformation require

official document · source cfr-2024 · id 14:§ 25.621