Martensite stainless steel is mainly low-carbon or high-carbon steel, with chromium content ranging from12% to 18%, while 304 stainless steel contains more than chromium18% and more than 8% nickel. The properties of martensitic stainless steel can be adjusted by heat treatment (quenching and tempering), while 304 stainless steel can not be adjusted by long-time heating in the regional temperature range because it has no austenite phase zone.
Matters needing attention of 304 stainless steel
Pre-heating or pre-cooling with a little boiling water (or ice water) for 1 min before use, the heat preservation and cold preservation effect will be better.
After putting hot water or cold water into the bottle, be sure to close the cork to avoid scalding caused by water leakage. ?
Too much hot or cold water can cause water leakage. Please don't put it near the fire source to avoid deformation. Please don't put it where children can reach it. Be careful not to let children play, there will be a risk of burns.