Quality characteristics of stainless steel
Release time:
2022-06-23
Generally speaking, different stainless steel products require different thickness tolerances of raw materials. For example, Class II tableware and thermos cups, the thickness tolerance is generally higher, at -3 ~ 5%, while Class I tableware generally requires-5%, steel pipe requires-10%, and hotel freezer material thickness tolerance requires-8%
Generally speaking, the thickness tolerance of raw materials is different for different stainless steel products. For example, the thickness tolerance of Class II tableware and thermos cup is generally higher, which is -3 ~ 5%, while that of Class I tableware is generally-5%, that of steel pipe is-10%, and that of hotel freezer is-8%, the dealer's requirements for thickness tolerance are generally between-4% and 6%. At the same time, the difference between the internal and external sales of products will also lead to different requirements for the thickness tolerance of raw materials. General export products customer thickness tolerance requirements are higher, and domestic enterprises on the thickness tolerance requirements are relatively low (mostly for cost considerations), some customers even require-15%.
Weldability
The use of different products on the welding performance requirements are also different. A kind of tableware generally does not require welding performance, even including some pot enterprises. However, the vast majority of products require good welding performance of raw materials, such as second-class tableware, thermos cups, steel pipes, water heaters, drinking fountains, etc.
Corrosion resistance
The vast majority of stainless steel products require good corrosion resistance, such as Class I and Class II tableware, kitchenware, water heaters, water dispensers, etc. Some foreign businessmen also test the corrosion resistance of the products: heating NACL aqueous solution to boiling, pouring out the solution after a period of time, washing and drying, and weighing the weight loss to determine the corrosion degree (note: when polishing the product, emery cloth or sandpaper contains Fe components, will cause rust spots on the surface during testing)
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