I agree with Mr. McGuire on this one - something doesn't sound right. At the very least you should:
- Get the orginal mill cert from the producing mill, not a retyped cert from a intermediate processor or service center. This will confirm that the mill produced it and shipped it as Inconel 600...
Blur,
I consider toughness and impact loading a fracture phenomenon - to simplify: way over on the right of the stress strain curve. Where 'denting' and 'bending' are yield phenomenon defined by the transition from elastic to plastic deformation - the left side of the stress strain curve...
There is probably not a simple formula for this solution. It will be greatly dependent on not just the material property variables - modulus, yield strength, thickness - but also the shape of the impacting piece. Example: a sharp, pointed piece will concentrate stress, a large ball shaped...
Another suggestion: work backwords from the requirements and environment then consider which aspects of the currently specified material are absolute must haves and which can be comprimised some. Sometimes you'll find the list of true requirements is relatively short.
Also - don't forget the...
Cory-
Won't 1020 have a 'hard' time getting to 39 C even at the surface without some sort carburization?
guimba-
Watch out for soft coatings on your jaws, they will wear quick and may cause gripping issues.
We use ASTM E1933 spec to set emissivity on IR equipment. We also have a book of samples for bare stainless and aluminized steels showing the various heat tints and/or alloying rates with the associated emissivity. This gets us in the ball park just based on comparing visual appearance to the...
We have found that when the effects of aluminized coating alloying with the base steel (turning gray or even black) are evaluated with both a contact thermocouple and an IR thermocouple or camera that convection and conduction are the main heat transfer mechanisms, radiation plays a much smaller...
Some other tensile test parameters that can help are the R-Value and particularly the n-value which can help describe the curve through the plastic region. Sometimes these are available on mill certs.
Another factor to consider is material thickness. Predicting highly localized stress...
Good advice from Metengr,
If you do decide to proceed here are some tips:
- Make sure you clearly communicate the specifications that the material and welds are to be purchased and manufactured under. These should include details on all the basics, chemistry, mechanical properties, weld...
It is unlikely that any one in the world will electrogalvanize high strength hot roll product. Hot dip galvanize might be available. What gauge are they looking for?
950MPa tensile grades are available in US but as a dual phase grade rather than complex phase and the sizes will be limited...
The term 'half hard' can mean a wide variety of processing routes and resulting mechanical properties depending on the producer. The formation of martensite during deformation will vary considerably based on the the exact gauge reduction, temperature, chemistry, etc. The resultant n and r...
Check on your tundish flow change after adding the shroud - you may be considerably changing tundish flow and distrubing tundish powder/surface. Lots can be seen through FEA of flow or water modelling.
Also, consider adding argon purge in ladle to tundish shroud (preferably just below ladle...
GMIracing,
A rough estimate of the available gauges for a HSLA grade would be CR: 0.65 - 2.0 mm and HR: 1.7 - 10 mm; hence the small overlap. This due to the available power, reduction and cooling rates of the hot mills on HR product and will vary depending on width, mill etc. On the CR side...
