Bright surface spring wire 0.3-4.0 spring wire 201/669B/304H

Bright surface spring wire refers to a type of spring wire that has a smooth and shiny surface finish. It is commonly used in applications where aesthetics are important, such as in jewelry or decorative items.

The "0.3-4.0" specification indicates the diameter range of the spring wire, which can vary from 0.3mm to 4.0mm. This range allows for different sizes of springs to be manufactured, depending on the specific requirements of the application.

The numbers "201/669B/304H" refer to the different grades or types of stainless steel that can be used for the spring wire. Each grade has its own unique properties and characteristics, which determine its suitability for specific applications.

- Grade 201 stainless steel is a low-cost alternative to traditional stainless steel grades. It has good corrosion resistance and is suitable for general-purpose applications.

- Grade 669B stainless steel is a high-strength material with excellent corrosion resistance. It is commonly used in applications where high tensile strength and durability are required.

- Grade 304H stainless steel is a heat-resistant variant of grade 304 stainless steel. It has higher carbon content, which provides improved high-temperature strength and resistance to oxidation.

Overall, bright surface spring wire in the 0.3-4.0 diameter range can be manufactured using different grades of stainless steel, depending on the specific requirements of the application.

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