Titanium vs steel & stainless steel & aluminum

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Titanium VS steel, stainless steel, aluminum, copper

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Titanium vs steel & stainless steel & aluminum

  1. 1. Physical propertiesComparison with other metalsBaoji Mingkun Nonferrous Metal Co.,LtdTel: +86 917 3253429 Fax: +86 917 3905677Email: titaniummanufacturer@yahoo.comWebsite: http://www.bjmkgs.comPhysical properties of commercially pure titanium are characterized as follows.u High melting point of 1.668℃ (a little higher than steel)u Light specific gravity of 4.51 (some 60% of steel, about 1.7 times of aluminum)u Small coefficient of thermal expansion of 8.4x10-6/K (half of 18-8 stainless steel, 1/3 of aluminum)u Small coefficient of thermal conductivity of 17w/m.k (nearly equal to 18-8 stainless steel)u High electrical resistance of 0.55μΩ.m (higher than pure metals except 18-8 stainless steel)u Non-magnetic material with permeability of 1.0001u Crystal structure: close-packed hexagonal lattice and body-centered cubic lattice below and abovetransformation temperature (885℃), respectively.PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
  2. 2. u Small Young’s modulus of 106.3KN/mm2 (about half of steel, about 1.5 times of aluminum)Comparison of physical properties with other metalsItem Atomic No.AtomicweightSpecificgravityMeltingPointCoefficient of linearthermal expansionSpecificheatCoefficient ofthermal conductivitySpecific electricalresistanceElectricalconductivityYoung’smodulusPoisson’s ratioTitanium 22 47.90 4.51 1.668 8.4x10-6 0.519 17 0.55 3.1 106.3 0.34Ti 6AL-4V - - 4.4 1.650 8.8x10-6 0.610 7.5 1.71 1.1 110 0.33Steel 26 55.85 7.9 1.530 12x10-6 0.460 63 0.097 18 205.8 0.31SUS 304 - - 7.91.400-1.42017x10-6 0.502 16 0.72 2.4 199.9 0.3Aluminum 13 26.97 2.7 650 23x10-6 0.879 205 0.027 64 69.1 0.337075 - - 2.8 476-638 23x10-6 0.962 121 0.058 30 71.5 0.33Magnesium 12 24.32 1.7 650 25x10-6 1.004 159 0.043 40 44.8 0.35Nickel 28 58.69 8.9 1.453 15x10-6 0.460 92 0.095 18 205.8 0.30Hastelloy - - 8.9 1.305 11.3x10-6 0.385 13 1.3 1.3 204.4 -Copper 29 63.57 8.9 1.083 14x10-6 0.385 385 0.017 100 107.8 0.34Note): 18-8stainless steel: Cr(18%)-Ni(8%)-Fe(balance)Aluminum alloy 7075: Quenched and tempered duralumin[Cu(1.6%)-Mg(2.5%)-Cr(0.3%)-Zn(5.6%)-Al(balance)]Hastelloy C: 54Ni-17Mo-15Cr-5Fe-4Wu Physical properties other than the aboveCrystal structureα titanium (below 885℃): Close-packed hexagonal latticea=2.9504A c=4.6833A c/a=1.587Aβ titanium (above 885℃): Body-centered cubic latticea=3.3065APDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
  3. 3. Latent heat of fusion:60.7J/g Magnetic permeability: 1.0001PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn

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