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  1. DannyEQS

    Steel Coil Material

    Keep in mind that there is also only a narrow window of thickness where a steel company will offer the same grade as either hot rolled or cold rolled. This is likely only between 1.8 and 2.5mm. Thin-gauge hot roll limits the tons per hour of the steel mill, so don't be surprised if there is a...
  2. DannyEQS

    Quality measurement of deep drawn parts

    TRala- Aye- there's the rub. Mighty small parts you have. OK - a different approach... what's the cost of poor quality? If these are going into nuclear reactors, then every aspect of every part (dimensions, microcracks, etc.) is likely critical, and therefore that dictates one level of quality...
  3. DannyEQS

    Quality measurement of deep drawn parts

    Rather than sectioning and then measuring the thickness with calipers, you may want to consider using an ultrasonic thickness gauge, which is non-destructive. [Remember to calibrate the gauge against your starting (flat sheet) thickness.] This is an easy and quick way to find the thinnest...
  4. DannyEQS

    ASTM A1008 (CR) vs. ASTM A1011 (HR)

    Another consideration is if your parts are going to be galvanized or used bare. You will have many more mills to choose from if you want CR+galv compared with HR+galv. And I agree with MSUKeith's comments, except that I think some of the newer minimills might be able to go a bit thinner on the...
  5. DannyEQS

    predicting the forming limit diagram when sheet thickness changes

    MSUKeith gave some good sources. You may also what to see http://www.eqsgroup.com/calculations.htm where you can plug in n-value and thickness, and the FLCo calculation is done for you. You will also find English-metric thickness and strength converters, among others.

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