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Tham khảo tài liệu 'machine design databook episode 1 part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ỌO TABLE 8-8 Ế Allowable stresses ơsa for various ferrous and nonferrous materials Downloaded from Digital Engineering Library @ McGraw-Hill www.digitalengineeringlibrary.com Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Mechanical properties Allowable stress at design temperature K C Tensile strength Yield ơst min stress ơíy 323 K 373 K 423 K 473 K 523 K 573 K 623 K 648 K 673 K 698 K 723 K 748 K 773 K 798 K 823 K 848 K Materials with grade or 2 20 MPa min E20 50 C 100 C 150 C 200 C 250 C 300 C 350 C 375 C 400 C 425 C 450 C 475 C 500 C 525 C 550 C 575 C designation and product kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi MPa kpsi Carbon and Low-Alloy Steel in Tension Plates 1 363 52.6 0-55 Ầ20a 26 121 17.5 121 17.5 113 16.4 102 14.8 93 13.5 85 12.3 77 11.2 74 10.7 71 10.3 58 8.4 42 6.1 35 5.1 2A 412 59.8 0.50 Ầ2Ộ 25 137 19.8 126 18.3 117 17.0 106 15.4 96 13.9 88 12.8 79 11.5 76 11.0 73 10.6 58 8.4 42 6.1 35 5.1 2B 510 74.0 0.50 Ầ2Ộ 20 170 24.7 156 22.6 144 20.8 130 18.8 119 17.3 109 15.8 98 14.2 93 13.5 81 11.8 58 8.4 42 6.1 35 5.1 20 Mo 6 471 68.3 275 39 9 20 157 22.8 157 22.8 157 22.8 150 21.8 140 20.3 129 18.7 121 17.6 117 17.0 113 16.4 110 16.0 106 15.4 76 11.0 55 8.0 36 5.2 20C15 510 74.0 294 42.6 20 170 24.7 170 24.7 167 24.2 150 21.9 137 19.9 126 18.3 114 16.5 108 15.7 81 11.8 58 8.4 42 6.1 35 5.1 15 Cr 4 Mo 6 490 71.1 294 42.6 20 163 23.6 163 23.6 163 23.6 163 23.6 157 22.8 149 21.6 141 20.5 135 19.6 128 18.6 128 18.6 124 18.0 114 16.5 84 12.2 57 8.3 34 5.0 15 C8 412 59.8 226 32.8 25 137 19.9 137 19.9 127 18.4 116 16.8 105 15.2 96 13.9 87 17.6 82 11.9 79 11.5 58 8.4 42 6.1 35 5.1 Forgings 20 Mo 6 471 68.3 275 39.9 20 157 22.8 157 22.8 157 22.8 150 21.8 140 20.3 130 18.9 121 17.6 107 15.5 113 16.4 110 16.0 106 15.4 76 11.0 55 8.0 56 8.1 15 Cr 4 Mo 6 490 71.1 294 42.6 20 163 .
