Yield Questions can be directed to: 281-297-8500 Drilling Products Technical Marketing (3) This spreadsheet will calculate performance for non-standard tool joint material yield strengths which may not be acceptable/applicable to some or all applications. (2) The make-up torque of a tool joint is based on the lower of 60% of the tool joint torsional yield strength or the T3 value calculated per the equation in paragraph A.8.3 of API RP7G. Notes: (1) Torsional yield strength of double-shoulder tool joints (HT, XT, GPDS) is calculated per a modified form of the equation described in paragraph A.8.1 of API RP7G that takes into consideration the contributions of the secondary shoulder.lbsft-lbsft-lbsAb/Ap = Make-up TorqueTensile StrengthTorsional StrengthPerformance Statisticspsiin.IDODTypeConnection Propertiesin. While every effort has been made to ensure the accuracy of the data herein, this material is presented as a reference guide only and should not be construed as a recommendation. Grant Prideco cannot assume responsibility for the results obtained through the use of this program. No expressed or implied warranty is intended.