641 Каталог GEDORE 2014 Профессиональный слесарный инструмент и оборудование Стр.639

Каталог GEDORE 2014 Слесарный инструмент Стр. 639 0641 ENG Lab2u

Important prefix characters Giga Mega G 1.000.000.000 10 M 1.000.000 106 Kilo k 1.000 103 Hecto H 100 102 Deca Da 10 101 Deci d 01 10-1 Centi c 001 10-2 Milli m 0001 10-3 Micro P 0000001 10-6 Nano n 0000000001 10-9 Important SI units with conversions to old but still commonly used units Length metre m Masa kilogramme Time second s Force newton N m s2 1 N 0102 kp Torque newton metre N-m 981 N-m 1 kp-m Energy (work) joule J N-m Heat quantity joule J 1 J 0239 cal Power watt W N-m s 1 kW 136 PS 860 kcal h Pressure pascal Pa N m2 100 000 Pa 1 bar 10 mWS Electrical current ampere A Temperature kelvin K 1 K 1 C Conversion table mass and weight 1 megagramme (Mg) 1.000 kg 10.000 hg 100.000 dag 1.000.000 g 1 ton (to.) 1.000 kg 1 kilogramme ( kg) 1 hectogramme (hg) 10 hg 100 dag 10 dag 1000 g 100 g 1 decagramme (dag) 10 g 1 gramme (g) 10 dg 100 cg 1000 mg 1 decigramme (dg) 10 cg 100 mg 1 centigramme (cg) 10 mg 1 miligramme (mg) 1 mg Conversion table force and torque 1 newton 0102 kp 1 kilopond 981 N 1 kilopond metre 981 N-m Statutory unit in the Federal Republic of Germany until 1977 Material properties Density Expansion Melting point Modulus of elasticity g cm3 1 C C N mm Aluminium 27 0000024 6601 72 000 Lead 113 0000029 3273 16 000 Iron (Steel) 786 0000012 1540 210 000 Gold 193 0000014 1063 79 000 Copper 89 0000017 1083 126 000 Zinc 71 0000026 419 94 000 Glass 22-29 0000008 800-1500 68 000 Air 00013 00036 Wood 05-07 10 000 Plastics synthetic materials PS 105 000008 3 400 PR 09 000018 1 200 ABS 105 000010 2 500 Examples Example 1 Expansion of a steel body of 100 mm in length at a temperature of 10 C. Length y expansion coefficient x C exp. 100 mm x 0000012 x 10 0012 mm 12 pm lxample 2 Elastic expansion e s E. A body of 100 mm in length made of ABS is stretched with s 50 N mm2. e 50 N mm2 2500 N mm2 0.02. The expansion is 100 mm x 0.02 2 mm. lxample 3 Two steel plates with a total thickness of 20 mm are pre-stressed by means of a screw connection of s 50 N mm2 e 50 210000 0.00024. The compression in the surrounding area of the screw is 20 mm x 0.00024 00048 mm 5 pm. The elastic compression induces a continuous pre-tension of the screw connection. A properly tensed screw connection is selfinhibiting. GEDORE Comparsion table of Vickers-Brinell-Rockwell hardness and tensile strength Vickers hardness Brinell hardness Rockwell hardness Rockwell hardness Tensile strength HV 30 HB 30 HRB HRC sB N mm2 80 807 364 - 270 85 85 424 - 290 90 90 474 - 310 95 95 520 - 320 100 100 564 - 340 105 105 600 - 360 110 110 634 - 380 115 115 664 - 390 120 120 694 - 410 125 125 720 - 420 130 130 744 - 440 135 135 764 - 460 140 140 784 - 470 145 145 804 - 490 150 150 822 - 500 155 155 838 - 520 160 160 854 - 540 165 165 868 - 550 170 170 882 - 570 175 175 896 - 590 180 180 908 - 600 185 185 918 - 620 190 190 915 - 640 195 195 940 - 660 200 200 950 - 670 205 205 958 - 680 210 210 966 - 710 215 215 974 - 720 220 220 982 - 730 225 225 990 - 750 230 230 - 192 760 235 235 - 202 780 240 240 - 212 800 245 245 - 221 820 250 250 - 230 830 255 255 - 238 850 260 260 - 246 870 265 265 - 254 880 270 270 - 269 900 275 275 - 271 920 280 280 - 276 940 285 285 - 283 950 290 290 - 290 970 295 295 - 296 990 300 300 - 303 1010 310 310 - 315 1040 320 320 - 327 1080 330 330 - 338 1110 340 340 - 349 1140 350 350 - 360 1170 360 359 - 370 1200 370 368 - 380 1230 380 376 - 389 1260 390 385 - 398 1290 400 392 - 407 1320 410 400 - 415 1350 420 408 - 424 1380 430 415 - 432 1410 440 423 - 440 1430 450 430 - 448 1460 460 456 (1490) 470 463 (1520) 480 470 (1550) 490 477 (1580) 500 483 (1600) 510 491 (1630) 520 497 (1660) 530 504 (1690) 540 510 (1710) 550 516 (1740) 560 522 (1770) 570 528 (1790) 580 533 (1820) 590 539 (1850) 600 544 (1870) 610 550 (1900) 620 555 (1930) 630 560 (1950) 640 565 (1980) 650 570 (2000) 660 575 (2030) 670 580 (2050) 680 585 (2080) 690 590 (2110) 700 595 (2130) 720 604 (2170) 740 612 (2220) 760 620 (2260) 780 628 (2300) 800 636 - 820 643 - 840 650 - 860 657 - 880 663 - 900 669 - 920 675 - 940 680 - 639