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  1. canwestler

    Looking for advice, high yield material with YS>180ksi

    Thank you for your advice.
  2. canwestler

    Looking for advice, high yield material with YS>180ksi

    They are machined threads and we need mild corrosion resistance for oilfield applications. It is not a permanent tool that stays in the oil well. I might need to redesign the threads. Thank you for your advice.
  3. canwestler

    Looking for advice, high yield material with YS>180ksi

    Thank you again for the advice.
  4. canwestler

    Looking for advice, high yield material with YS>180ksi

    Thank you for your advice. By the way, can EN30B or 4330 V+ heat treated be substituted for 4340 alloy steel? Our suppliers have those alloys in stock.
  5. canwestler

    Looking for advice, high yield material with YS>180ksi

    Hi, I'm new for this forum and looking for some advice regarding the materials. We designed the 2.125" shaft made of 17-4 H900 with 2" STUB ACME threads to withstand 400,000 lbf tensile load. The shaft has 47 HRc hardness, but it failed and broke off at 2" STUB ACME thread while pulling test at...
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