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  • Users: JohnHH
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  1. JohnHH

    Magnetic properties of Q195

    Does anyone know where I can get any information for Q195 steel? Thanks, John
  2. JohnHH

    Metal guy trying to spec plastic (HELP)

    I am overwhelmed by the number of resins and alphabet soup of plastic materials. How do you guys keep it straight? I am designing a solenoid that has some plastic and rubber parts. I have talked to the GE plastics guys and they told me that I need PBT for one part and Polyurethane for another...
  3. JohnHH

    Connector contact material

    Spec sheets for crimp contacts for electrical connectors usually say that the contacts are some type of plated steel. Does anyone know what a typical steel alloy would be used for crimped contacts? Thanks
  4. JohnHH

    Determining coil characteristics

    I have an over molded coil that I have been using to finalize a prototype. I scavenged the coil from a solenoid and now I have to determine the coil characteristics so I can spec out the production coils. I can get a rough idea of the wire size and number of turns based on the dimensions of...

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