Monel K500 spring wire

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  • Monel K500 spring wire

    Monel K-500 Chemical composition:

    Alloy

    %

    Ni

    Cu

    Al

    Ti

    Fe

    Mn

    S

    C

    Si

    Monle K500

    Min.

    63

    27.0

    2.30

    0.35

     

     

     

     

     

    Max.

     

    33.0

    3.15

    0.85

    2.0

    1.5

    0.01

    0.25

    0.5

    • This Nickel-Copper alloy is precipitation hardenable, due to the additions of Aluminium and Titanium. It combines the corrosion resistance of Monel 400 but gives the added advantage of extra strength and hardness (as a result of its age hardening ability).

      Good Mechanical Properties at Elevated Temperatures No
      Corrosion Resistant at Ambient Temperatures Yes
      Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures No
      Oxidation Resistant No
      Precipitation Hardenable Yes

      Applications include:

      • Pump Shafts
      • Fasteners
      • Marine Propeller Shafts
      • Oil Well Tools
      • Instruments
      • Springs
      CONDITION OF SUPPLY HEAT TREATMENT (AFTER FORMING)
      Annealed Age harden at 580 - 590oC (1075 - 1095oF) for 8 - 10 hours and air cool. *
      Spring Temper Age harden at 530 - 550oC (985 - 1020oF) for 4 - 6 hours and furnace
      cool to 450oC (840oF) at a rate of 8 -15oC (45 - 60oF) per hour and air cool.*
      Spring Temper Age harden at 530 - 540oC (985 -1005oF) for 4 - 6 hours and air cool. *
      Properties
      DENSITY 8.44 g/cm3 0.305 lb/in3
      MELTING POINT 1350oC 2460oF
      COEFFICIENT OF EXPANSION 13.7 µm/m °C 
      (20 - 100°C)
      7.6 x 10-6 in/in °F
      (70 - 212°F)
      MODULUS OF RIGIDITY 66 kN/mm2 9573 ksi
      MODULUS OF ELASTICITY 179 kN/mm2 25962 ksi

      * heat treating Monel K-500 in free air can have a detrimental effect on its corrosion resistant properties.

      CONDITION APPROX TENSILE STRENGTH APPROX SERVICE TEMPERATURE
      Annealed 650 - 850 N/mm2 94 - 123 ksi -100 to +260oC -150 to +500oF
      Annealed + Aged 950 - 1050 N/mm2 138 - 167 ksi -100 to +260oC -150 to +500oF
      Spring Temper 1000 - 1300 N/mm2 145 - 189 ksi -100 to +260oC -150 to +500oF
      Spring Temper + Aged 1200 - 1500 N/mm2 174 - 218 ksi -100 to +260oC -150 to +500oF

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