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    • 인청동 : Phosphor Bronze
      • 순동 : Copper 황동 : Brass 인청동 : Phosphor Bronze 양백 : Nikel Silver
      • Characteristics & Applications
      Alloy name C5111 C5102 C5191 C5212 C5210 C5240
      Characteristics High Strength / Good Corrosion Resistance High Strength / Good Corrosion Resistance
      / High Elasticity
      Applications Connector / Switch Connector / Switch / Relay
      • Chemical Composition & Properties
      Alloy name C5111 C5102 C5191 C5212 C5210 C5240
      Chemical Composition (wt%) Cu Balance Balance Balance Balance Balance Balance
      Sn 3.5-4.5 4.5-5.5 5.5-7.0 7.0-9.0 7.0-9.0 9.0-11.0
      P 0.03-0.35 0.03-0.35 0.03-0.35 0.03-0.35 0.03-0.35 0.03-0.35
      Zn ≤0.2 ≤0.2 ≤0.2 ≤0.2 ≤0.2 ≤0.2
      Pb ≤0.02 ≤0.02 ≤0.02 ≤0.02 ≤0.02 ≤0.02
      Fe ≤0.1 ≤0.1 ≤0.1 ≤0.1 ≤0.1 ≤0.1
      Others Cu+Sn+P≥99.5 Cu+Sn+P≥99.5 Cu+Sn+P≥99.5 Cu+Sn+P≥99.5 Cu+Sn+P≥99.5 -
      Physical Properties Melting Temp. (℃) 1063 1049 1045 1027 1027 999
      Specific Gravity 8.86 8.86 8.83 8.8 8.8 8.78
      Thermal Conductivity
      {W/(m·K)}      		 84 69 67 62 62 50
      Coefficient of Thermal
      Expansion(10-6/K)      		 17.8 17.8 18.0 18.2 18.2 18.4
      Modulus of Elasticity in
      Tension(kN/mm²)      		 110 110 105 110 110 110
      Poisson's Ratio 0.33 0.33 0.33 0.33 0.33 0.33
      Electrical Conductivity
      (%IACS)       		20 15 13 13 13 11
      Mechanical
      Properties      		 Tensile
      Strength
      (N/㎟)      		 O ≥295 ≥305 ≥315 ≥345 - -
      1/4H 345-440 375-470 390-510 390-510 - -
      1/2H 410-510 470-570 490-610 490-610 470-610 -
      H 490-590 570-665 590-685 590-705 590-705 650-750
      EH 570-660 620-710 635-720 ≥685 685-785 750-850
      SH ≥640 ≥660 ≥690 - 735-835 850-950
      ESH - - - - 770-885 950-1050
      XSH - - - - 835-1000 1000-1200
      Elongation
      (%)      		 O ≥38 ≥40 ≥42 ≥45 - -
      1/4H ≥25 ≥28 ≥35 ≥40 - -
      1/2H ≥12 ≥15 ≥20 ≥30 ≥27 -
      H ≥7 ≥7 ≥8 ≥12 ≥20 ≥11
      EH ≥3 ≥4 ≥5 ≥5 ≥11 ≥9
      SH - - - - ≥9 ≥5
      ESH - - - - ≥5 ≥1
      XSH - - - - ≥1 -
      Hardness
      (Hv)      		 O - - - - - -
      1/4H 80-150 90-160 100-160 100-160 - -
      1/2H 120-180 130-190 150-205 150-205 140-205 -
      H 150-200 170-220 180-230 180-235 185-325 200-240
      EH ≥170 190-230 200-240 ≥210 210-260 230-270
      SH ≥200 ≥200 ≥210 - 230-270 250-290
      ESH - - - - 245-285 270-310
      XSH - - - - - ≥290