Tham khảo tài liệu 'asm metals handbook - desk edition (asm_ 1998) episode 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Table 13 Tensile properties and fracture toughness of aluminum-lithium alloy 2090 2090 temper Thickness Specification Tensile properties Toughness Direction a Ultimate tensile strength Yield strength Elongation 50 min 2 in. in Direction b and Kc or KIc c KIc or Kc mm in. MPa ksi MPa ksi MPa0ã ksiV ĨŨ Sheet T83 AMS 4351 L 530 550 77 80 517 517 75 75 3 6 L-T Kc 44 d 40 d LT 505 73 503 73 5 . . . 45 440 64 440 64 . . . . T83 AMS 4351 L 483 70 483 70 4 . . . LT 455 66 455 66 5 . . . 45 385 56 385 56 . . . . T84 AMS Draft L 495 525 72 76 455 470 66 68 3 5 L-T Kc 49 71 d 45 65 d D89 LT 475 69 415 60 5 T-L Kc 49 d 45 d 45 427 62 345 50 7 . . . T3 e . . f LT 317 min 46 min 214 min 31 min 6 min . . . O f . . LT 213 max 31 max 193 max 28 max 11 min . . . 7075-T6 . . . L 570 83 517 75 11 L-T Kc 71 d 65 d Extrusions T86 g h h AMS Draft L 517 75 470 68 4 . . . h h D88BE L 545 79 510 74 4 . . . h h L 550 80 517 75 5 . . . LT 525 76 483 70 . . . . Plate 7075-T6 . . . L 565 82 510 74 11 L-T Kic 27 25 T81 13-38 AMS 4346 L 517 550 75 80 483 517 70 75 4 8 L-T Kic 27 71 25 65 LT 517 75 470 68 3 L-T KIc 22 20 Typical values are given in parentheses. Data for alloy 7075-T6 are included for comparison. a L longitudinal LT long transverse. b L-T crack plane and direction perpendicular to the principal direction of metalworking rolling or extrusion T-L crack plane and direction parallel to the direction of .
