Session timeout and form variable

I set up session timeout = 20 minutes.
In default.aspx, I code session("ProductName")="computer".
In Order.aspx, I set form variable strProduct and then assign to session("ProductName") as 
strProduct = cstr(session("ProductName"))  (that is: strProduct="Computer")
I will use this form variable for more than 20 minutes.
Question:
After 20 minutes, does form variable in Order.aspx still keep value from default.aspx, that is strProduct="Computer"?

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