What do these numbers mean?
The Lunchbots that we carry are made from stainless steel. However, have you ever wondered what those little numbers (18/8, 304 stainless steel) on the wrapper mean?
Well, as far as the Lunchbot is concerned, it is comprised of 18% chromium and 8% nickel. It’s also known as the 304 grade, which means it contains at least 50% iron.
Chromium binds oxygen to the surface to help protect the iron against rust. Nickel helps prevent corrosion.
Stainless steel is very safe and is great for food containers.
