Is 430/201/304 stainless steel suitable for stretching?

Recently received orders from customers, stainless steel water cups require 430 stainless steel for the outside and 304 stainless steel for the inside. The customer also said that if there is no 430 stainless steel, 201 stainless steel can be used for the outer shell. Many inexperienced friends will probably think that they are all stainless steel, just change the model, the same process should be implemented, in fact, this is not the case. So is 430/201/304 stainless steel suitable for stretching？

For this type of stainless steel, we arrange in order of hardness, 430 stainless steel, 201 stainless steel, and 304 stainless steel. The stretching process requires the flexibility of stainless steel. The larger the product diameter and the greater the depth, the better the performance of 304 stainless steel. On the contrary, 430 stainless steel will burst, and 201 stainless steel will crack. However, if the diameter of the product is less than 100 mm, and the depth is less than 100 mm, these different types of steel can be stretched.

Why do many customers use 430 stainless steel on their surfaces? This is not only because the material cost of 430 is relatively lower, but also because 430 stainless steel has high hardness, which will increase impact resistance as a product shell and is not easy to deform.

The hardness of 201 stainless steel is lower than 430 stainless steel, but higher than 304 stainless steel. Choose to use 201 stainless steel as the product shell because 201 stainless steel has better corrosion resistance than 430 stainless steel.

Therefore, you usually see that the outer shell of some stainless steel water ware will use 201 stainless steel, and the outer shell of some household appliances will use 430 stainless steel.

The thermos cup produced by Dongguan Zhanyi Commodity Technology Co., Ltd. uses sufficient materials and exquisite workmanship. In terms of material, we insist on using food-grade 304 stainless steel inside and outside, or a combination of 304 stainless steel outside and 316 stainless steel. The heat preservation time can reach 8 hours, and the cold preservation time can reach 12 hours. We insist on using the AQL1.0 inspection standard, which is far higher than the peer standards, and all links adopt a full inspection system to ensure that each product is a high-quality product. Customers from all over the world are welcome to visit our factory for inspection, and welcome to place orders for cooperation.