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: h* a/ f. ]" Y' O3 Z4 G
Chemical composition ( i' T, `' w ~# J( v; y( |Grade Standard C % Mn % P max % S Max % Si % + `# |* m! h' F5 |- r
1042 SAE J 403 0.40-0.47 0.6-0.9 0.03 0.05 0.6% max - z0 @2 `9 g+ n( }8 ?45 GB/T 699 0.42-0.50 0.5-0.8 0.035 0.035 0.17-0.37 9 U# o# c M0 n
+ } c% H+ ?0 [0 S- `, t8 e; l3 aMechanical Properties ' ?" P0 z/ @* L+ l3 t$ p- {: w WGrade Standard Type of process Tensile Strength Yiled Strength Elongation Hardness 2 i( r5 W4 M& m3 g1042 SAE J1397 Hot Rolled 550MPa 300MPa 16% <HB163 . {# R/ i# O0 ]/ r
Cold Drawn 610MPa 520MPa 16% <HB179 # i$ [# m2 X f6 D2 Y45 GB/T 699 Annealing 600MPa 355MPa 16% <HB197 : O9 J) O' X! Z" ?% e