Cross recessed pan head screw, what are the commonly used materials?

The standard cross recessed pan head screw on the front market mainly include carbon steel, stainless steel, copper, aluminum, titanium and other materials. Among them, carbon steel, stainless steel and copper are the most commonly used.

Commonly used carbon steel for cross recessed pan head screw. We distinguish low carbon steel, medium carbon steel and high carbon steel as well as alloy steel with carbon content in carbon steel.

1, low carbon steel C% ≤ 0.25% domestically known as A3 steel. Foreign countries are basically called 1008, 1015, 1018, 1022 and so on. Mainly used for 4.8-class bolts, 4-level nuts, small screws and other products without hardness requirements. (Note: The drill tail nail is mainly made of 1022 material.)

2,Medium carbon steel 0.25% 3 high carbon steel C%>0.45%. At present, there is basically no use of alloy steel in the market: the addition of alloying elements in the carbon steel, adding some special properties of the steel: such as 35, 40 chromium molybdenum, SCM435, 10B38. The screws mainly use SCM435 chromium-molybdenum alloy steel, the main components are C, Si, Mn, P, S, Cr, Mo.

Followed by stainless steel. As people demand higher quality, the application of stainless steel is more extensive. Its performance grade: 45, 50, 60, 70, 80 1 Mainly divided into austenite (18% Cr, 8% Ni) good heat resistance, good corrosion resistance, good weldability. A1, A2, A4 2 Martensite, 13% Cr has poor corrosion resistance, high strength and good wear resistance. C1, C2, C4 ferritic stainless steel. 18%Cr has better forging properties and corrosion resistance is stronger than martensite. The imported materials on the market are mainly Japanese products. According to the level, it is mainly divided into SUS302, SUS304, and SUS316.

Finally, brass. Compared with carbon steel and stainless steel screw materials, H62, H65 and H68 copper are mainly used in the market.

Of course, the cross recessed pan head screw material and other are also often used, Shenzhen Shishitong screw factory can be produced, welcome your inquiry.

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