(1) 304 is a a common nehrđajući čelik to sadrži više than 18 percent krom i više than 8 percent nikal. Many kettles and tea cjedila are made of this material. The gustoća of 304 nehrđajući čelik is 7,93g/cm3, which can High Temper resistance of 800 Degree , widely used In Food And Medical Industries as Food Grade Stainless Steel.
(2) 316 nehrđajući čelik has dodan Mo (molibden) element, its korozija otpor i visoko temperatura otpor have been Great Improved Compared With 304 nehrđajući čelik, i it can withStand High Temperatures of 1200-1300 Degree C. It is uglavnom used in food industry and kirurška oprema . Another advantage of 316 nehrđajući čelik is that there is no thermal expansion and kontrakcija.
Općenito govoreći, oboje 304 i 316 pripada to prehrambena klasa nehrđajući čelik, i it is relativno sigurno to use them to make djeca's termos lonci. Međutim, the korozija otpor i visoka temperatura otpor od 316 nehrđajući čelik are bolji than 304 nehrđajući čelik, so kada odabir a termos cup za djeca, 316 nehrđajući čelik can be given priority, after all, safety comes first.
