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drakett (Materials) (OP)
23 Jul 06 16:57
Can someone clarify the meaning and purpose of the "A5 elongation" designation that seems to be common on european specs,..I understand it uses a gage length calculated from the cross section size. However,is it specific to a certain type of tensile specimen(s) or is it a generic elongation calculation  that can be applicable to any type specimen dimension(ASTM E8, ISO 80, JIS #5,...)
hacki72 (Automotive)
27 Jul 06 8:37
What kind of test do you mean?
For plastics, rubber, steel, paper?
There are so many options.
Do you have a specific Specification where this A5 Elongation
appears?

Best regards
hacki
TVP (Materials)
27 Jul 06 19:42
A5 was the symbol used to denote elongation in the now obsolete standard DIN 50145.  The elongation was determined from a gage length = 5.56x√S0, where S0 is the original cross-sectional area.  DIN EN 10002-1 is the superceding document, and A5 is now called A.  There are other symbols used for elongation as well, such as A50 mm, etc.

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