If you don't care the data to be truncated, just turn the ANSI_WARINGS OFF, the data will be truncated to fit the row and no error no fuss everything will work fine. Here is what you can see the effect:

CREATE TABLE #tst (t char(2))

insert #tst values ('abc')

Execute that you get the following error:

Msg 8152, Level 16, State 14, Line 1

String or binary data would be truncated.

The statement has been terminated.

Then run this:

set ansi_warnings off

insert #tst values ('abc')

You will get this:

(1 row(s) affected)