How to identify the material of stainless steel plate?
Because the material of the stainless steel plate is different or the source of the stainless steel plate is different, there are several ways to identify the material of the stainless steel plate according to the source of the stainless steel plate:
1. To identify the material of the stainless steel sheet imported or ordered by the steel mill, it is generally only necessary to check the marks on the steel or the packaging according to the quality certificate provided by the import or the steel mill. The quality certificate is the supplier's confirmation and guarantee of the inspection results of the batch of products. Therefore, the quality certificate states not only the name of the material, the specification, the quantity, weight and delivery status of the delivered parts, but also all the inspection results of the specified warranty items. Similarly, in order to facilitate management, avoid confusion, and prevent accidental use caused by confusion, manufacturers indicate the brand, batch number, state, specification, quantity and manufacturer code on the material or packaging. The marking of the mark should be consistent with the content of the quality certificate. The commonly used marking methods mainly include the following three: coloring (painting the color indicating the grade on the designated part of the material), printing (imprinting or jet printing on the designated part of the material, indicating the grade, specification, furnace slot number, etc. .Commonly used on thick steel plates or large and medium-sized steel) and tagging (hanging and marking grades on bundled or boxed materials) stainless steel plate markings are generally printed and marked.
Second, the social backlog of stainless steel. According to the length of the backlog and the quality of storage, there are generally two situations:
1. The backlog time is not long, so store it well. The processing unit not only keeps the original quality certificate or copy, but also has complete and clear marks on the steel or packaging. For the identification of this stainless steel sheet, simply check the markings on the steel or the packaging against the quality certificate.
2. The backlog time is long, the storage is not perfect, there is no quality certificate, and the marks on the steel or packaging are not obvious or fall off.
For the material identification of this type of stainless steel plate, it is mainly necessary to carry out in-depth investigation and research, and to consult the original documents of the processing unit. Regular invoices and other original documents are marked with steel numbers. If there is no steel number record, it is necessary to consult the local price data at that time, and determine the steel number through the price. This is a more effective method, but it is often easy to be fooled. Therefore, it is necessary to master the identification method of the real object.