Relationship of Conventional Mechanical Property and Chemical Composition

Fifteen troops of test data of tensile strength R_m, ductile-brittle transition temperature ETT₅₀, nil-ductility transition temperature NDT, carbon equivalent C_eq, impurity elements P and S, Mn and elongation A of high strength plate were analyzed.The relationship formula was proposed based on above results:(1) R_m=1 081.8 C_eq+ 10 089.75 (w (P) + w (S))-4.25 kt; (2) ETT₅₀=kt²exp^{1.6 ln (C_eq/(kt2))-0.48 ln ((w (P) + w (S))/(kt2)) + 3.57}; (3) NDT=-358.3 C_eq+ 171.7 w (Mn)-0.18 kt²; (4) ETT₅₀=-1 476.6 (A/(kt²)) ^0.3-0.34 kt²; (5) NDT=-283.7 A-0.058 kt².