4032 Piston and NOS

Im a little green to piston types, can someone offer some detail on tolerances with No2 on a 4032 material piston. Is a 4032 piston considered a forged piston? Curious to see what others have used and results with this type of piston.

Thanks!

Edit: These are JE pistons specifically

http://www.suppliersonline.com/propertypages/4032.asp#RelatedNames

That's a forged piston, with a silicon level close to hypereutectic, but not quite. Its a good choice for an NA engine. For N2O 2618 would be a better choice.

Curious what folks are hitting this material piston with, is there a certain limit on how heavy of a shot this material will hold safely? Anyone with any examples of abuse:D?

Nice side by side comparison by SRP:

http://www.who-sells-it.com/cy/je-pistons-708/sportsman-racing-producs-catalog-425/page-4-fullsize.html