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Recent content by sta67

  1. sta67

    DIN steel casting test coupon

    Thanks for the info but the standards that you both have mentioned mostly discuss test specimens and procedures for testing and do not address what I am looking for. The ASTM standard A1067/A1067M-12a (Reapproved 2024) is titled "Standard Specification for Test Coupons for Steel Castings" and...
  2. sta67

    DIN steel casting test coupon

    Can someone tell me where I can find the recommended cast-on sample for a DIN alloy steel casting. I have one for the DIN EN 1563 nodular iron standard, but the DIN steel casting standards that I have looked for like EN 10293 do not show the recommended cast-on sample figure.
  3. sta67

    thermal expansion of nodular iron

    Thanks to all for the comments. The reason I needed the info was not to use the material at those low temperatures, but to get some data for calculating contraction expected on liners that are shrink fitted in cylinders. The DIS found me one book that had one data point at -300 deg F and I...
  4. sta67

    thermal expansion of nodular iron

    Can someone tell me where to find data for the thermal expansion of nodular iron below zero. I have searched in every resource I can find and only find values above zero. Or if someone has the data I just need a couple points like +68 to -100 deg F and +68 to -300 deg F. And if possible for...
  5. sta67

    NACE mr0175 interpretation

    Thanks SJones for your response. I looked up the latest ISO 15156-2 that you referred to but that section you referenced simply tells me that I can either test for acceptance, or petition based on historical use. Further down in the standard it still says the same thing, that alloy steel greater...
  6. sta67

    NACE mr0175 interpretation

    According to mr0175 alloy steel with more than 1% nickel is not allowed even if hardness is less than 22 HRC. This would rule out using 4340 steel in our H2S environment. We were wanting to use quenched and tempered 4340 instead of 4140 for a large compressor forging to get better through...
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