SUS304不锈钢具有耐腐蚀性，耐热性、机械性能良好，深冲压、弯曲等常温加工性能较好，热处理后不会硬化。水杯，厨卫水盆等不锈钢制品都是SUS304。304不锈钢被国标定位“食品级”金属——正常接触水、茶、咖啡、奶、油盐酱醋等等都没问题。

SUS304 stainless steel has corrosion resistance, heat resistance, good mechanical performance, deep stamping, bending and other room temperature processing performance is good, will not harden after heat treatment.Water cups, kitchen and bathroom water basin and other stainless steel products are SUS304. 304 stainless steel is national standard positioning "food grade" metal —— normal contact water, tea, coffee, milk, oil, salt, sauce and vinegar and so on are no problem.

   大部分的使用场合SUS301和SUS304具有较高的通用性，在高强度的的弹性和摩擦工作环境下，SUS301有较大的优越性； 在使用材料焊接时，SUS304有较大的优越性。

SUS301 and SUS304 have high versatility, SUS301 in high strength elasticity and friction, and SUS304 in material welding.

       SUS316不锈钢具有塑性、韧性、冷变性、焊接工艺性能良好，高温强度好。由于添加Mo(2~3%)，耐腐蚀性能，特别是耐点蚀性能优秀。因此316也常用于制作保温杯。作为保温杯产品性能上来说，304不锈钢材质已经足够。但是316不锈钢是在304不锈钢的基础上的进一步升级（控制杂质比例、加入钼）——耐腐蚀能力更强。但是能力越强的产品，成本往往越高。所以往往316材料制作的保温杯价格也更高。在海水和其他各种介质中，耐腐蚀性优于304不锈钢，主要用于耐点蚀材料。

SUS316 has plasticity, toughness, cold degeneration, good welding process performance and good high temperature strength.With Mo (2~3%), corrosion resistance, especially point corrosion resistance.Therefore, 316 is also commonly used to make thermos cups.As a thermos cup product performance, 304 stainless steel material is enough.However, 316 stainless steel is further upgraded from 304 stainless steel (controlling impurity ratio, adding molybdenum). —— has stronger corrosion resistance.But the more capable the product, the higher the cost.So often 316 materials made of the thermos cup price is also higher.In sea water and various other media, corrosion resistance is better than 304 stainless steel and is mainly used for point corrosion resistant materials.