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What are the stainless steel coil materials?
1. DDQ material: DDQ material refers to the material used for deep drawing (drawing), which is also known as soft material. The main characteristics of this material are higher elongation (≧53%), lower hardness (≦170%), internal grain grade between 7.0 and 8.0, and better deep drawing performance. Many enterprises producing thermos and pot, their product processing ratio (BLANKING SIZE/ product diameter) is generally relatively high, their processing ratio of 3.0, 1.96, 2.13, 1.98 respectively. SUS304DDQ material is mainly used for these requirements of higher processing ratio of products, of course, processing ratio of more than 2.0 products generally need to go through several times of stretching to complete.
2. General materials: Mainly used for materials other than DDQ, the characteristics of this material are relatively low elongation (≧45%), relatively high hardness (≦180HB), internal grain size grade between 8.0 and 9.0, compared with DDQ materials, its deep drawing performance is relatively poor, it is mainly used for products that can be obtained without stretching. Like a tableware spoon, spoon, fork, electrical appliances, steel pipe, etc. But it has an advantage compared with DDQ material, that is, the BQ property is relatively good, mainly because of its slightly higher hardness.
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