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) Each critical casting must— (i) Have a casting factor of not less than 1.25; and (ii) Receive 100 percent inspection by visual, radiographic, and magnetic particle (for ferromagnetic materials) or penetrant (for nonferromagnetic materials) inspection methods or approved equivalent inspection methods. (2) For each critical casting with a casting factor less than 1.50, three sample castings must be static tested and shown to meet— (i) The strength requirements of § 27.305 at an ultimate load corresponding to a casting factor of 1.25; and (ii) The deformation requirements of § 27.305 at a load of 1.15 times the limit load. (d) (1) Except as provided in paragraphs (d)(2) and (3) of this section, the casting factors and corresponding inspections must meet the following table: (2) The percentage of castings inspected by nonvisual methods may be reduced below that specified in paragraph (d)(1) of this section when an approved quality control procedure is established. (3) For castings procured to a specification that guarantees the mechanical properties of the material in the casting and provides for demonstration of these properties by test of coupons cut from the castings on a sampling basis— (i) A casting factor of 1.0 may be u

official document · source cfr-2024 · id 14:§ 27.621