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Introduction of common materials for fasteners
Fasteners are mainly made of carbon steel, stainless steel, and copper. The most commonly used is carbon steel.
Carbon steel is divided into different carbon content: low carbon steel, medium carbon steel, high carbon steel and alloy steel.
1. Low-carbon steel (C%≤0.25%) is mainly used for grade 4.8 bolts, grade 4 nuts, small screws and other products without hardness requirements.
2, medium carbon steel (0.25% 3. High carbon steel (C%>0.45%) is rarely used due to its high hardness and poor processing performance. (Guide: How to do anti-corrosion work for anchor bolts) 4. Alloy steel: Add alloying elements (such as Mn, Cr, Mo, etc.) to ordinary carbon steel to increase some special properties of the steel. Generally, 35 steel and 45 steel are commonly used for grade 8.8 bolts; 35CrMo; 40Cr for grade 10.9 bolts; 35CrMo and 42CrMo for grade 12.9 bolts. More related stainless steel stamping industry news:
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