Room1,2-737, Yongli Mansion, NO.37 Yujiang Road, Hexi District, Tianjin, China.



Top Fastener Manufacturer

Established in 1991


Screw has what material expertise

Screw has what material expertise

First, carbon steel

Screw manufacturers to carbon steel material in the carbon composition of the difference between high carbon steel, carbon steel and carbon steel and carbon steel.

1.High carbon steel C% 0.25% or less is usually called A3 steel. Or 1008,1015,1018,1022, etc. Suitable for 4.8 class bolts, 4 class nuts, small screws and other products without strength regulations; (Note: 1022 material for key drilling nail)

2.Medium carbon steel 0.25%;

3.Medium carbon steel C%> 0.45%. Basically no application in the market at this stage;

4.Carbon steel: Add aluminum alloy element in 16 manganese steel, improve some unique properties of the material: such as 35, 40 chromium molybdenum, SCM435, 10B38.

Second, stainless steel plate

Performance levels: 45,50,60,70,80;

1.The main component of austenite (18%Cr, 8%Ni) good temperature resistance, corrosion resistance, good malleability. A1, A2, A4;

2.Austenite, 13%Cr corrosion resistance is weak, high compressive strength, good wear resistance. C1, C2, C4 ferritic stainless steel. 18%Cr upsetting is good, corrosion resistance is stronger than austenite. According to the grade mainly divided into SUS302, SUS304, SUS316.


Common materials for copper, zinc alloy copper. The market mainly uses H62, H65, H68 copper standard parts.

The above is to introduce the screw material knowledge, through the above explanation, we have a certain understanding of this content, I hope to help you.