03 - measures, conversion tables
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1 - measures, conversion tables - International system of units- tables - Conversion tables - Specific weights and melting points tables - tables - Weight tables XVI
2 INTERNATIONAL SYSTEM OF UNITS - TABLE Name Symbol Lenght Meter m Area square meter m 2 Volume cubic meter m 3 Force Newton N Mass kilogram Kg Pressure Pascal Pa (N/m 2 ) Work and Energy Joule J (Nm) Power Watt W (J/s) Time Second s Speed meter / second m/s Acceleration meter / second 2 m/s 2 Flow rate meter 3 /second m 3 /s Temperature Kelvin K Frequency Hertz Hz (1/s) Electric current Ampere A Voltage Volt V (W/A) Electrical resistance Ohm Ω (V/A) Electric power Volt Ampere VA (VA) XVII
3 MEASURE AND CONVERSION UNITS Lenght centimetre (cm) 1 meter (m) ,37 3,281 1,094 1 inch (In) 2,54 2,54x ,33x10-2 0,028 1 foot (ft) 30,48 0, ,333 meter (m) 1 yard (yd) 91,44 0, Area square centimetre (cm 2 ) square meter (m 2 ) inch (In) square inch (sq in) Foot (ft) square foot (sq ft) yard (yd) square yard (sq yd) 1 square centimetre (cm 2 ) 1 1x10-4 0,155 1,08x10-3 1,2x square meter (m 2 ) 1x ,764 1,2 1 square inch (sq in) 6,452 6,45x ,95x10-3 7,72x square foot (sq ft) 929 9,29x ,111 1 square yard (sq yd) , Volume Litre (l = dm 3 ) cubic metre (m 3 ) cubic inch (cu in) cubic foot (cu ft) Gallon (gal - USA) Gallon (gal -GBr) 1 liter (l) = 1dm 3 1 1x ,02 3,53x10-2 0,2642 0,22 1 cubic meter (m 3 ) ,102x ,31 264, cubic inch (cu in) 1,64x10-2 1,64x ,8x10-4 4,33x10-3 3,6x cubic foot (cu ft) 28,317 2,83x ,48 6,23 1 Gallon (gal -USA) 3,785 3,79x , , Gallon (gal -GB) 4,546 4,55x ,4 0,1605 1,2 1 Mass (Weight) kilogram (Kg) Pound (Ib) hundred-weight hundred-weight USA GB 1 kilogram (Kg) 1 2,205 1,102x10-3 9,842x pound (Ib) 0, x10-4 4,464x hundred-weight USA 907, , hundred-weight GB ,12 1 Force Newton (N) Kilopound (kgp) Poundal (pdl) 1 Newton (N) 1 0,102 7,23 1 Kilopound (kgp) 9, ,93 1 Poundal (pdl) 0,1383 0, Pressure Pascal (Pa) Bar (bar) Poundal/pollice 2 (psi) Technical atmosphere (at = kg/cm 2 ) Atmosphere (atm) Column of Mercury (mmhg = Torr) Column of water (mh2o) 1 Pascal (Pa) 1 1x10-5 1,45x10-4 1,02x10-5 9,87x10-6 7,5x10-3 1,02x Bar (bar) 1x ,50 1,02 0, ,2 1 Poundal/pollice 2 (psi) , ,x10-2 0, ,72 0,7 1 Technical atmosphere (at = kg/cm 2 ) 9,807x10 4 0, ,22 1 0, , Atmosphere (atm) 1,013x10 5 1,013 14,70 1, ,33 1 mm di mercurio (mmhg = Torr) 133,32 1,34x10-3 1,934x10-2 1,36x10-3 1,316x ,36x metro di acqua (mh2o) ,81x10-2 1,423 0,1 9,682x ,6 1 Work and Energy Kilocalorie (kcal) Kilogrammetre (kgm) Kilowatt (kwh) Horse power / hr (Hph) - non Metric Joule (J) 1 Kilocalorie (kcal) ,163x10-3 1,561x Kilogrammeter (kgm) 2,34x ,724x10-6 3,653x10-6 9,806 1 kilowatt-hour (kwh) ,341 3,6x Horsepower/hour-non metric (hph) , ,685x Joule (J) 2,39x10-4 0,102 2,78x10-7 3,725x Temperature Kelvin (K) Celsius ( C) Fahrenheit ( F) Kelvin (K) / K-273 = C (K-273)x1,8 = F Celsius ( C) C+273 = K / ( Cx1,8)+32 = F Fahrenheit ( F) 273+[( F-32):1,8] = K ( F-32):1,8 = C / XVIII
4 SPECIFIC GRAVITY AND FUSION TEMPERATURE SOLID Substances Substance Chemical abbreviation Specific gravity (Kg/dm3) Fusion temperature ( C) Substance Chemical abbreviation Specific gravity (Kg/dm3) Fusion temperature ( C) Unalloyed steel 7, Distilled water 1 0 Stainless steel 7, Ethanol 0, Tungsten steel 8, Gasoline 0,68-0, Aluminium Al 2,7 660 Pure benzol 0,88 64 Nickel silver 8, Gas oil 0, Antimony Sb 6, Mercury Hg 13,59-38,9 Silver Ag 10,5 960 Lube oil 0,91-20 Bronze 94 Cu 6 Sn 7,4-8,9 900 Machine oil 0,91-5 Antiacid Bronze 8, Petroleum 0,81-70 Cadmium Cd 8, Perchloroethylene 1,62 Calcium Ca 1, Cement 1,65 - Cobalt 8, Corundum 3,9-4, Chromium Cr 7, Acetylene C 2 H 2 0,91-81 Diamond C 3,51 ~ 3500 Carbon dioxide CO 2 1,53-57 Iron Fe 7, Air Cast iron 7, Nitrogen N 2 0, Rubber 1,1 - Illumination gas 0, Manganese Mn 7, Hydrogen H 2 0, Magnesium Mg 1, Neon Ne 0, White metal 7,5-10, Carbon monoxide CO 0, Hard metal K10 14,7 > 2000 Oxygen O 2 1,1-218 Hard metal P10 11,1 > 2000 Water vapor 100 C 0,62 0 Mica 2,6-3,6 ~ 1300 Molybdenum Mo 10, Nichel Ni 8, Gold Au 19, Iron oxide 5, Brass 63/37 8, Paraffin 0,92 54 Lead Pb 11, Synthetic plastic 1,4-1,5 - Platinum 21, Copper Cu 8, Emery Tin Sn 7, Titanium Ti 4, Tungsten W 19, Vanadium V 6, Zinco Zn 7, Die-cast zinc 6,8 390 LIQUID Substances GASEOUS Substances Substance Chemical abbreviation Specific gravity (Kg/dm3) Fusion temperature ( C) XIX
5 ISO METRIC THREAD UNI Coarse ISO metric thread Pitch point Fine ISO metric thread Pitch point M 1,6 0,35 1,321 1,20 M 3 0,35 2,721 2,65 M 1,8 0,35 1,521 1,45 M 4 0,50 3,599 3,5 M 2 0,40 1,679 1,60 M 5 0,50 4,599 4,5 M 2,2 0,45 1,838 1,75 M 6 0,75 5,378 5,2 M 2,5 0,45 2,138 2,05 M 7 0,75 6,378 6,2 M 3 0,50 2,599 2,5 M 8 0,75 7,378 7,2 M 3,5 0,60 3,010 2,9 M 8 1 7,153 7 M 4 0,70 3,422 3,3 M 9 1 8,153 8 M 4,5 0,75 3,878 3,7 M10 0,75 9,378 9,2 M 5 0,80 4,334 4,2 M ,153 9 M 6 1 5,153 5 M 10 1,25 8,912 8,8 M 7 1 6,153 6 M , M 8 1,25 6,912 6,8 M , M 9 1,25 7,912 7,8 M 12 1,25 10,912 10,8 M 10 1,5 8,676 8,5 M 12 1,5 10,676 10,5 M 11 1,5 9,676 9,5 M , M 12 1,75 10,441 10,2 M 14 1,25 12,912 12,8 M , M 14 1,5 12,676 12,5 M , M , M 18 2,5 15,744 15,5 M 15 1,5 13,676 13,5 M 20 2,5 17,744 17,5 M , M 22 2,5 19,744 19,5 M 16 1,5 14,676 14,5 M , M , M , M 18 1,5 16,676 16,5 M 30 3,5 26,771 26,5 M , M 33 3,5 29,771 29,5 M , M , M 20 1,5 18,676 18,5 M , M , M 42 4,5 37,799 37,5 M , M 45 4,5 40,799 40,5 M 22 1,5 20,676 20,5 M , M , M , M , M 56 5,5 50,796 50,5 M 24 1,5 22,676 22,5 M 60 5,5 54,796 54,5 M , M , M , M , M 25 1,5 23,676 23,5 M 26 1,5 24,676 24,5 M 27 1,5 25,676 25,5 M , M 28 1,5 26,676 26,5 M 30 1,5 28,676 28,5 M , M 32 1,5 30,676 30,5 M , M 35 1,5 33,676 33,5 M 36 1,5 34,676 34,5 M , M , M 38 1,5 36,676 36,5 M , M 40 1,5 38,676 38,5 M 42 1,5 40,676 40,5 M 45 1,5 43,676 43,5 M 50 1,5 48,676 48,5 XX
6 WHITWORTH THREAD UNI 2709 «W» point «BSF» Ø punta W 1/ ,588 1,18 1,2 W 3/ ,762 4,00 4,0 W 3/ ,381 1,87 1,9 W 7/ ,556 4,69 4,7 W 1/8-40 3,175 2,56 2,6 W 1/4-26 6,350 5,41 5,4 W 5/ ,969 3,21 3,2 W 5/ ,938 6,83 6,8 W 3/ ,762 3,74 3,8 W 3/8-20 9,525 8,30 8,3 W 7/ ,556 4,54 4,6 W 7/ ,113 9,76 9,8 W 1/4-20 6,350 5,13 5,2 W 1/ ,700 11,17 11,0 W 5/ ,938 6,58 6,6 W 9/ ,288 12,76 12,5 W 3/8-16 9,525 8,01 8,0 W 5/ ,875 14,13 14,0 W 7/ ,112 9,37 9,4 W 3/ ,050 17,01 17,0 W 1/ ,700 10,66 10,5 W 7/ ,225 20,00 20,0 W 9/ ,288 12,25 12,0 W ,400 22,96 23,0 W 5/ ,875 13,66 13,5 W 1 1/8-9 28,575 25,86 26,0 W 3/ ,050 16,61 16,5 W 1 1/4-9 31,750 29,04 29,0 W 7/8-9 22,225 19,51 19,5 W 1 3/8-8 34,925 31,87 32,0 W ,400 22,35 22,5 W 1 1/2-8 38,100 35,05 35,0 W 1 1/8-7 28,575 25,09 25,0 W 1 5/8-8 41,275 38,22 38,0 W 1 1/4-7 31,750 28,26 28,0 W 1 3/4-7 44,450 40,96 41,0 W 1 3/8-6 34,925 30,86 31,0 W 1 7/8-7 47,625 44,14 44,0 W 1 1/2-6 38,100 34, 34,0 W ,800 47,31 47,5 W 1 5/8-5 41,275 36,39 36,5 W 2 1/4-6 57,150 53,08 53,0 W 1 3/4-5 44,450 39,56 39,5 W 2 1/2-6 63,500 59,43 59,5 W 1 7/8-4,5 47,625 42,20 42,0 W 2 3/4-6 69,850 65,78 66,0 W 2-4,5 50,800 45,37 45,5 W ,200 71,32 71,5 W 2 1/4-4 57,150 51,04 51,0 W 2 1/2-4 63,500 57,39 57,5 W 2 3/4-3,5 69,850 62,87 63,0 W ,200 69,22 69,5 GAS THREAD «G» UNI «Gc» UNI point Ø punta G 1/8-28 9,73 8,68 8,70 Gc 1/8-28 8,5 4,9 3,1 G 1/ ,16 11,62 11,75 Gc 1/ ,5 7,3 4,7 G 3/ ,66 15,12 15,25 Gc 3/ ,0 7,7 5,1 G 1/ ,95 18,86 19,00 Gc 1/ ,5 10,0 6,4 G 5/ ,91 20,82 21,00 Gc 3/ ,5 11,3 7,7 G 3/ ,44 24,35 24,50 Gc ,0 12,7 8,1 G 7/ ,20 28,11 28,25 Gc 1 1/ ,0 15,0 10,4 G ,25 30,59 30,50 Gc 1 3/ ,0 15,0 10,4 G 1 1/ ,90 35,24 35,50 Gc 1 1/ ,5 15,0 10,4 G 1 1/ ,91 39,25 39,50 Gc ,0 18,2 13,6 G 1 3/ ,32 41,66 41,50 Gc 2 1/ ,0 21,0 14,0 G 1 1/ ,80 45,14 45,00 Gc ,0 24,1 17,1 G 1 5/ ,32 48,67 48,50 max min G 1 3/ ,75 51,08 51,00 G ,61 56,95 57,00 G 2 1/ ,71 63,05 63,00 G 2 1/ ,18 72,52 72,50 G 2 3/ ,53 78,87 79,00 G ,88 85,22 85,50 G 3 1/ ,98 91,32 91,50 G 3 1/ ,33 97,67 97,50 G 3 3/ ,68 104,02 104,00 G , 110,37 110,50 XXI
7 AMERICAN THREAD Standard «NC» and «UNC» fine «NF» and «UNF» point point UNC No ,854 1,425 1,582 UNF No ,524 1,181 1,306 1,3 UNC No ,184 1,694 1,872 UNF No ,854 1,473 1,613 1,6 UNC No ,515 1,941 2,136 UNF No ,184 1,755 1,913 1,9 UNC No ,845 2,156 2,383 UNF No ,515 2,024 2,174 2,1 UNC No ,175 2,487 2,697 UNF No ,845 2,271 2,438 2,35 UNC No ,505 2,647 2,909 UNF No ,175 2,550 2,713 2,65 UNC No ,166 3,307 3,515 UNF No ,505 2,817 2,995 2,9 UNC No ,826 3,680 3,960 UNF No ,166 3,401 3,561 3,5 UNC No ,486 4,341 4,575 UNF No ,826 3,967 4,125 4 UNC 1/4"-20 6,350 4,976 5,232 UNF No ,486 4,5 4,466 4,6 UNC 5-16"-18 7,938 6,411 6,680 UNF 1/4"-28 6,350 5,367 5,519 5,4 UNC 3/8"-16 9,525 7,805 8,087 UNF 5/16"-24 7,938 6,792 6,957 6,7 UNC 7/16"-14 11,112 9,149 9,451 UNF 3/8"-24 9,525 8,379 8,545 8,4 UNC 1/2"-13 12,700 10,584 10,896 UNF 7/16"-20 11,112 9,738 9,921 9,8 UNC 9/16"-12 14,288 11,996 12,319 UNF 1/2"-20 12,700 11,326 11,509 11,4 UNC 5/8"-11 15,875 13,376 13,709 UNF 9/16"-18 14,288 12,761 12,954 12,8 UNC 3/4"-10 19,050 16,299 16,644 UNF 5/8"-18 15,875 14,348 14,542 14,4 UNC 7/8"- 9 22,225 19,169 19,530 UNF 3/4"-16 19,050 17,330 17,534 17,4 UNC 1"- 8 25,400 21,963 22,339 UNF 7/8"-14 22,225 20,261 20,477 20,3 UNC 1 1/8"- 7 28,575 24,648 25,9 UNF 1"-12 25,400 23,109 23,338 23,2 UNC 1 1/4"- 7 31,750 27,823 28,214 UNF 1 1/8"-12 28,570 26,284 26,513 26,4 UNC 1 3/8"- 6 34,925 30,343 30,800 UNF 1 1/4"-12 31,750 29,459 29,688 29,6 UNC 1 1/2"- 6 38,100 33,518 33,975 UNF 1 3/8"-12 34,920 32,634 32,863 32,7 UNF 1 1/2"-12 38,100 35,809 36,8 35,9 max min «NPS» Pipe thread point «NPT» Taper thread NPS 1/ ,27 8,92 8,9 NPS 1/8-27 8,5 NPS 1/ ,57 11,54 11,5 NPS 1/ ,0 NPS 3/ ,05 15, 15,0 NPS 3/ ,5 NPS 1/ ,22 18,61 18,5 NPS 1/ ,0 NPS 3/ ,56 23,95 24,0 NPS 3/ ,0 NPS 1-11½ 33,22 30,05 30,0 NPS 1-11½ 29,0 NPS 1¼ -11½ 41,98 38,80 39,0 NPS 1¼ -11½ 38,0 NPS 1½ -11½ 48,05 44,87 45,0 NPS 1½ -11½ 44,0 NPS 2-11½ 60,09 56,91 57,0 NPS 2-11½ 56,0 NPS 2½ -8 72,70 68,13 68,0 NPS 2 1/2-8 67,0 NPS ,60 84,04 84,0 NPS ,0 XXII
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