Determination of parameters of computer two-step ispection of strength properties of steel instead of nick out destructive testing

A technique for determination of optimization parameters (level of reception and sampling scope) at complex control of strength properties of steel is given using the valid matrix. Two-stage control by the methods of tensile strength and destructive tests of steam pipes of 15Kh1M1F steel is considered. It is shown that the two-stage plan of control permits to decrease the supplier risk preserving the user risk unchanged and to reduce essentially the scope of expensive