International Standards BS/EN/DIN/ISO U.S. Equivalents Matrix

[gard2372]

Does anyone know of a service or engineering firm that has a matrix or can create one that will show International Standards BS/EN/DIN/ISO and their ASTM/ASME equivalents?

All of our drawings and specifications call out ISO or EN standards. Our suppliers here in the U.S. are trying to source our parts for us. We are trying to find the U.S. equivalents.

[Wesley Richardson]

In Reply to Parent Post by gard2372

Does anyone know of a service or engineering firm that has a matrix or can create one that will show International Standards BS/EN/DIN/ISO and their ASTM/ASME equivalents?

All of our drawings and specifications call out ISO or EN standards. Our suppliers here in the U.S. are trying to source our parts for us. We are trying to find the U.S. equivalents.

In the metals testing field, I have worked with BS, CSA, EN, DIN, ISO, JIS, TUV and about 10 other international standards organization's documents. I have also worked with ASME BPVC, ASTM, DOT, SAE AMS, AS, MAM and many others in the U.S. One caution that I have regarding a matrix of "equivalent" documents is that they are not equivalent. For example in specifying a metal alloy, the primary element percentages may be the same, but the allowed trace elements levels are not. The Charpy impact test specified by ASTM E 23 is similar to the DIN metals impact test, however the anvil, weights, and methods of calibration are entirely different. In tensile testing of metals, you can convert the yield and ultimate strength values, however the strain rates between the U.S. standards and the European standards are different, thus the values cannot be directly compared. For fasteners like bolts and nuts, you can convert the size, but the grades of fasteners are not equivalent.

My recommendation is that if you are supplying materials to a standard, such as BS, DIN, EN, ISO, you need to purchase that document. People complain about the cost of standards in the U.S., but you will find that the European standards are typically much higher in cost. I once bought a 3 page standard that cost $200, and that was about 8 years ago. I also bought (for the company I worked for) a three ring binder of German pressure vessel standards, with about 100 pages in it for over $800.

Wes R.

[gard2372]

In Reply to Parent Post by Wesley Richardson

In the metals testing field, I have worked with BS, CSA, EN, DIN, ISO, JIS, TUV and about 10 other international standards organization's documents. I have also worked with ASME BPVC, ASTM, DOT, SAE AMS, AS, MAM and many others in the U.S. One caution that I have regarding a matrix of "equivalent" documents is that they are not equivalent. For example in specifying a metal alloy, the primary element percentages may be the same, but the allowed trace elements levels are not. The Charpy impact test specified by ASTM E 23 is similar to the DIN metals impact test, however the anvil, weights, and methods of calibration are entirely different. In tensile testing of metals, you can convert the yield and ultimate strength values, however the strain rates between the U.S. standards and the European standards are different, thus the values cannot be directly compared. For fasteners like bolts and nuts, you can covert the size, but the grades of fasteners are not equivalent.

My recommendation is that if you are supplying materials to a standard, such as BS, DIN, EN, ISO, you need to purchase that document. People complain about the cost of standards in the U.S., but you will find that the European standards are typically much higher in cost. I once bought a 3 page standard that cost $200, and that was about 8 years ago. I also bought (for the company I worked for) a three ring binder of German pressure vessel standards, with about 100 pages in it for over $800.

Wes R.

I use the following website to download and purchase ISO/BS/EN/DIN standards. Thus far, they have had every standard I have needed.

http://global.ihs.com/