316 would be the grade of SS used
and from a manufactures sight -
AISI31 alloy - due to the enrichment of molybdenum steel brands are particularly resistant to corrosion, high temperatures and corrosive environments. This alloy is ideal for use in electronic cigarettes atomizers.
This is the highest quality stainless steel mesh on the market
one of the top uses for AISI31 alloy is deep fryer tubes and other oven related equipment.