Newsletter | Vol 14 - October 2021
Cryogenic and Low Temperatures Database (CLTD)
Questions from CINDAS customers about our newest database, the Cryogenic and Low Temperatures Database (CLTD):
Q: How was the data chosen for the CLTD?
A: Because we continually add data to our products, we began with our CINDAS data, consolidating all of the cryogenic and low temperature data from all of our products into a single database. We then added the NIST and LNG data to it. We continue to add information from other sources. We find, however, that much of the data in the other references is actually data taken from the Thermophysical Properties of Matter Datebase's precursor, the TPRC-Data Series by Touloukian at Purdue University. It takes a lot of time to cross-check these references.
Q: What other data will be added?
A: We have found a multitude of data sources from which we will be extracting data to add to the CLTD. It is a stand-alone product which contains data on a wide variety of materials, not just alloys.
Q: What is the temperature range for data in the CLTD?
A: We include data in both the cryogenic range (0K to 120K) and the low temperature range (120K to 273K).
Q: What markets does CINDAS find are best served by the CLTD?
A: Operating at cryogenic temperatures is essential to many processes in fields of science and engineering including space exploration, aerospace, electronics, refrigeration, and medicine.
Q: How does the CLTD differ from the ASMD or AHAD?
A: The ASMD and AHAD consist of chapters on specific alloys written in a standard format. Some of the properties of the alloy in particular may have cryogenic and low temperature data but it is within all of the other properties data of that alloy. We have kept all of that data in the ASMD/AHAD, but if there was cryogenic or low temperature data, we included that in the CLTD.
Q: Is the main advantage of the CLTD the ability to find cryogenic data faster than searching the other CINDAS databases?
A: While there is a distinct advantage to finding cryogenic data quickly with the CLTD, there is also data included that is not found in other CINDAS databases.
Q: Can you give me a specific example of a particular alloy?
A: For example, Al 7050 has data in the low temperature range beginning at -65 F: Area Reduction vs. T, Elongation % vs T, Fracture Toughness vs. T and both Ultimate and Yield Tensile Strength vs. T, but there is nothing in the cryogenic range. That alloy is in the AHAD, but you would have to search all the properties to find the low temperature (or cryogenic) range data. We have done that already, by consolidating all of the data in those temperature ranges into a single product.
Q: So you are saying that some of the alloys in the AHAD will have cryogenic data, but it is scattered within the chapter and there is more data and better organized/accessible data in the CLTD?
A: Yes, that is exactly what I?m saying. Some of the alloys have cryogenic data among all the other data but the user would have to search all of the property/independent variable combination to find them. In the example of Al 7050, there are 66 property/independent variable combinations, but only five of them have data in the low temperature range (-65 F to 32 F). In addition, the CLTD has over 2000 materials, while the AHAD has only around 280.
To learn more, the following link to a PowerPoint presentation regarding the CLTD provides more information on the 54 material groups in the database: https://cindasdata.com/products/docs/CLTD-powerpoint.pdf.
To see the demo version of the database, click here.
If you are interested in learning more about this product, please contact us.