18 years as a one-stop custom manufacturer of shaker bottles and sports water bottles.
How to choose a satisfactory stainless steel water cup?
1. Material level and safety
Food Grade Stainless Steel (304/316)
304 stainless steel: Basic food-grade material, good corrosion resistance, suitable for holding room temperature water or weak acidic beverages, but long-term exposure to strong acid (if juice or carbonated beverages) still has a slight risk of metal precipitation.
316 stainless steel: upgraded version of food-grade material, adding molybdenum elements to improve corrosion resistance, can withstand higher concentrations of acidic liquids, suitable for long-term use and better safety.
Non-food grade stainless steel (201, etc.)
It is easy to precipitate heavy metals such as manganese and nickel, especially in high temperature or acidic environments, which may cause health risks and must be strictly avoided.
2. Insulation performance and structural design
Single-layer stainless steel cup
Advantages: Lightweight, low cost, suitable for room temperature or short-term insulation needs6.
Disadvantages: No heat insulation layer, easy to burn when installing hot water, and short insulation time (about 2-3 hours).
Double-layer vacuum stainless steel cup
Advantages: The vacuum insulation layer can extend the insulation time (hot water for 6-12 hours, cold water for more than 24 hours), and has better anti-scalding performance.
Disadvantages: Larger weight and higher price.
3. Differences in applicable scenarios
Daily household use
Recommended model: 500ml-1L capacity, direct drinking cup with leak-proof design, 316 stainless steel is preferred.
Outdoor/Commuter
Recommended models: double-layer vacuum cup (fall-proof design), portable hook or cup cover accessories to avoid choosing open and spillable styles.
Special drink demand
Acidic liquids (juice, coffee): 316 stainless steel cups must be used and cleaned in time after each use to avoid residual corrosion.
High temperature liquid: Double-layer anti-scalding cups are preferred to reduce the risk of excessive surface temperature.
4. Key points of health and maintenance
Cleaning Specifications
Avoid using strong oxidative cleaners (such as bleach, soda) to prevent chemical reactions with stainless steel.
Soak it regularly in white vinegar to remove scale to prevent bacteria from growing.
Tare for use
Do not store high salt or strong acidic liquids (such as soy sauce, lemon juice) for a long time to avoid accelerating metal precipitation.
Avoid heating of the microwave. Stainless steel material will reflect microwaves and cause damage to the equipment.
5. Price-performance options
If you need high cost performance, you can choose 304 stainless steel single-layer cups, which are suitable for basic needs.
Pursuing higher quality You can choose a double-layer vacuum cup, with more reliable material and craftsmanship.
Tips Avoiding Tips
Check the "SUS304/316" logo on the bottom of the cup or label, and be wary of fuzzy publicity that is only marked "stainless steel".
You can also prefer a design with silicone sealing ring and anti-slip bottom pad to improve use safety.