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How to read this table ? [Problem with insctruction from ASTM D471)

How to read this table ? [Problem with insctruction from ASTM D471)

How to read this table ? [Problem with insctruction from ASTM D471)

Hello guys, recently i have an issue to read this table

So, we are actually having a soak test for V-ring (rubber material), and before we got the method of test from ASTM D471-04 where this standard explains "practice Standard Test Method for Rubber Property—Effect of Liquids1"
we want to know, the temperature and how long the time of immersion/soaking V-ring (rubber) but we confused when we read table above (frowm ASTM D471-04), maybe someone may help us ? because it is strange if we read that table horizontally then normal temperature (23 oC) and 225 oC will having same period of immersion, 2998 hours it doesnt make sense :D

for additional info, this is the written instruction

RE: How to read this table ? [Problem with insctruction from ASTM D471)

It looks that the test temperatures and immersion periods are two separate factors to be specified for the testing of the product and used for the report.

RE: How to read this table ? [Problem with insctruction from ASTM D471)

Agree with mk3223. Pick a temp range and an immersion period based on anticipated service and material properties of the rubber (see 5.1 and 5.1.3).

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