在工业生产中，不锈钢板材因其耐腐蚀、耐高温、抗氧化等优良性能，广泛应用于各种领域。根据不同的标准和用途，不锈钢板材可以分为多个类型，这些类型包括但不限于：304型、321型、316型、410型等。

304型不锈钢板材是最常用的一种，其主要成分是钛合金（Cr18Ni9），具有良好的耐腐蚀性和加工性能。在家电行业，如洗衣机、冰箱等，304型不锈钢板材被广泛使用。

321型不锈steel plate, with a main composition of Cr18Ni9Ti, has excellent resistance to intergranular corrosion and is widely used in the aerospace industry.

The 316 type stainless steel plate, with a main composition of Cr16Mn7Ni14Mo2Cu2, has excellent resistance to pitting corrosion and crevice corrosion. It is often used in marine environments or chemical processing equipment.

The 410 type stainless steel plate, with a main composition of Cr11.5Ni0.75Mo1.25Si0.6C0.15N1.00Pb0.03Sb1%, is a hardenable martensitic stainless steel that can be heat-treated to achieve high strength and hardness levels.

In addition to these types, there are also other classifications such as austenitic (e.g., 309), ferritic (e.g., 409), duplex (e.g., S32205) and precipitation-hardening grades (e.g., PH13-8MO).

In summary, the classification of notched steel plates includes various types based on their chemical composition and mechanical properties, each suited for specific applications in industries such as aerospace engineering , automotive manufacturing , food processing plants etcetera.

By understanding the different categories of notched steel plates , engineers can choose the most appropriate material for their projects based on factors like cost-effectiveness versus performance requirements .