In daily customer communication and life, we often deal with stainless steel bolts, such as the A2-70 screw head, which is marked with letters or numbers. Do you know what these numbers and letters represent? Today, the Shanghai Yaluo Fastener editor will talk to you about the performance grades of stainless steel fasteners.
In the A2-70 nut identification, A2-70 represents the following meaning:
1. The letter A represents the austenitic stainless steel group
2. The number 2 represents the second group of austenitic stainless steel, commonly known as 304 stainless steel, marked as A2
3. The 70 on the nut represents the tensile strength of the bolt, which is 700 MPa=700 N/mm, and C4-70 represents the meaning:
1. The letter C represents the martensitic stainless steel group. 2. The number 4 represents the martensitic stainless steel group 4 material, marked as C4. 3. The following 70 represents the tensile strength of the bolt, which is 700 MPa=700 N/mm. Understanding the above meaning, the identification of the stainless steel bolt head will be clear.
The above is the performance of stainless steel bolts and the representative grades of stainless steel bolts. I don't know to what extent you have learned about stainless steel bolts after reading this article. If you are still not familiar with this, you can continue to follow us. The editor will continue to provide more information.
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