Strengthening Manual of Screws (Vol. 47)! Introducing what each one means in a blog format.
The strength classifications of stainless steel bolts and screws are represented by a combination of alphanumeric characters separated by a hyphen, such as "A2-50" or "A4-70". Let's take "A2-50" as an example to explain what each part means. First, the initial "A2" indicates the type of steel, where "A" represents austenitic stainless steel, and "2" refers to steel types such as SUS304 or SUSXM7. In the classification of steel types, besides the letter "A" for austenitic stainless steel, there are also "F" for ferritic stainless steel and "C" for martensitic stainless steel. *For more details, please refer to the related links on the blog. Feel free to contact us for further inquiries.*
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