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  • Users: zonian1903
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  1. zonian1903

    C/W Ratio for 1500, 2000, 2500 PSI Concrete

    Hello everyone, I am checking through my stuff but I can't find anywhere in my references I have that show W/C to Compressive strength relationship ranges for making concrete below 3,000 PSI. If someone happens to have these standards I would really appreciate it if someone could post up the...
  2. zonian1903

    Carburizing 4140 to 0.250" 380 Brinell

    Hi, I am doing a little work for a project I am helping with where there is a requirement to harden one face of a 1.500" thick 4140 plate to a hardness of 380 Brinell and a depth of .250" (I didn't come up with this requirement). The are no places anywhere close by (I live in central America)...

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