251 QGreek Symbols QName of Elements and Atomic Symbols QCharacteristics of Materials QHow to Calculate the Volume Reference Unless otherwise specified, lowercase letters are the norm. Reference This table is based on Appendix A(Names and Symbols of Elements)of ISO 31/8-1980 (Amounts and Units of Physical Chemistry and Molecular Physics) and Appendix C (Names and Symbols of Radionuclides) of ISO 31/9-1980 (Amounts and Units of Atomic Physics and Nuclear Physics). QHow to Calculate the Weight Weight W[g]= Volume[cm3]× Specific Gravity [Ex.]Material: Mild Steel When D=Ø16 and L=50mm, the weight is: ≈79[g] = ×1.62×5×7.85 π — 4 The specific gravity of W= D2×L×W π — 4 Uppercase Lowercase Pronunciation Conventional Usage alpha Angle, Coefficient beta Angle, Coefficient gamma Angle, Weight Per Unit Area, Relationship(Uppercase) delta Small Change, Density, Displacement epsilon Small Amount, Distortion zeta Variable eta Variable theta Angle, Temperature, Time iota kappa Radius of Gyration lambda Wavelength, Characteristic Value mu Friction Coefficient 10-6 (Micro) nu Frequency xi Variable omicron pi Circle Ratio (3.14159...) Angle Symbol of Product(Uppercase) rho Radius, Density sigma Stress, Standard Deviation Summation(Uppercase) tau Time Constant, Time, Torque upsilon phi Angle, Function, Diameter chi psi Angle, Function omega Angular Verocity=2πf Ohm:Unit of Electric Resistance (Uppercase) Atomic Number Name Symbol 1 Hydrogen H 2 Helium He 3 Lithium Li 4 Beryllium Be 5 Boron B 6 Carbon C 7 Nitrogen N 8 Oxygen O 9 Fluorine F 10 Neon Ne 11 Sodium Na 12 Magnesium Mg 13 Aluminum Al 14 Silicon Si 15 Phosphorous P 16 Sulfur S 17 Chlorine Cl 18 Argon Ar 19 Potassium K 20 Calcium Ca 21 Scandium Sc 22 Titanium Ti 23 Vanadium V 24 Chromium Cr 25 Manganese Mn 26 Iron Fe 27 Cobalt Co 28 Nickel Ni 29 Copper Cu 30 Zinc Zn 31 Gallium Ga 32 Germanium Ge 33 Arsenic As 34 Selenium Se 35 Bromine Br 36 Krypton Kr 37 Rubidium Rb 38 Strontium Sr 39 Yttrium Y 40 Zirconium Zr 41 Niobium Nb 42 Molybdenum Mo 43 Technetium Tc 44 Ruthenium R 45 Rhodium Rh 46 Palladium Pd 47 Silver Ag 48 Cadmium Cd 49 Indium In 50 Tin Sn 51 Antimony Sb 52 Tellurium T Atomic Number Name Symbol 53 Iodine I 54 Xenon Xe 55 Cesium Cs 56 Barium Ba 57 Lanthanum La 58 Cerium Ce 59 Praseodymium Pr 60 Neodymium Nd 61 Promethium Pm 62 Samarium Sm 63 Europium Eu 64 Gadolinium Gd 65 Terbium Tb 66 Dysprosium Dy 67 Holmium Ho 68 Erbium Er 69 Thulium Tm 70 Ytterbium Yb 71 Lutetium Lu 72 Hafnium Hf 73 Tantalum Ta 74 Tungsten W 75 Rhenium Re 76 Osmium Os 77 Iridium Ir 78 Platinum Pt 79 Gold Au 80 Mercury Hg 81 Thallium Tl 82 Lead Pb 83 Bismuth Bi 84 Polonium Po 85 Astatine At 86 Radon Rn 87 Francium Fr 88 Radium Ra 89 Actinium Ac 90 Thorium Th 91 Protactinium Pa 92 Uranium U 93 Neptunium Np 94 Plutonium Pu 95 Americium Am 96 Curium Cm 97 Berkelium Bk 98 Californium Cf 99 Einsteinium Es 100 Fermium Fm 101 Mendelevium Md 102 Nobelium No 103 Lawrencium Lr Material Specific Gravity Thermal Expansion Coefficient Young's Modulus ×10-6/˚C N/mm2 {Kgf/mm2} Mild Steel 7.85 11.7 205800 21000 NAK80 7.8 12.5 200900 20500 SKD11 7.85 11.7 205800 21000 SKD61 7.75 10.8 205800 21000 SKH51 8.2 10.1 218540 22300 Carbide V30 14.1 6.0 548800 56000 Carbide V40 13.9 6.0 529200 54000 Cast Iron 7.3 9.2~11.8 73500~102900 7500~10500 SUS304 8.0 17.3 193060 19700 SUS440C 7.78 10.2 199920 20400 Oxygen Free Coppers C1020 8.9 17.6 114660 11700 6/4 Brass C2801 8.4 20.8 100940 10300 Beryllium Copper C1720 8.3 17.1 127400 13000 Aluminum A1100 2.7 23.6 67620 6900 Duralumin A7075 2.8 23.6 70560 7200 Titanium 4.5 8.4 103880 10600 Solid Volume V Turncated Cylinder π V= d2h 4 π h1+h2 = d2 4 2 Pyramid h h V= A= arn 3 6 A=Area of Base r=Radius of inscribed circle a=Length of a side of a regular polygon n=Number of the sides of a regular polygon Spherical Crown πh2 V= (3r−h) 3 πh = (3a2+h2) 6 a is the radius. Ellipsoid 4 V= πabc 3 In case of spheroid (b=c) 4 V= πab2 3 Solid Volume V Oval Ring π2 a2+b2 V= d2 4 2 Cross Cylinder π d V= d2 (ℓ+ℓ’− ) 4 3 Hollow(Cylinder) π V= h(D2−d2) 4 =πth(D−t) =πth(d+t) Turncated Pyramid h V= (A+a+ Aa) 3 A.a=Area of both ends Solid Volume V Spherical Segment 2 V= πr2h 3 =2.0944r2h Torus V=2π2Rr2 =19.739Rr2 π2 = Dd2 4 =2.4674Dd2 Circular Cone π V= r2h 3 =1.0472r2h Sphere 4 V= πr3=4.1888r3 3 π = d3=0.5236d3 6 Solid Volume V Spherical Belt πh V= (3a2+3b2+h2) 6 Barrel When the circumference makes a curve equal to the circular arc, When the circumference makes a curve equal to a parabolic line, V=0.209ℓ(2D2Dd+1/4d2) πℓ V= (2D2+d2) 12 ( ) D L h1 d h h2 a h h r a a c b d b a ℓ ℓ , d d t D h h h r D d r R r h d r a b h d D ℓ GeneralTechnical Information Quantifiers, Unit Symbols, Chemical Symbols and Symbols of Elements
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