Release time：2020-01-16 18:44 Browse：
There are a variety of manufacturing materials for lengthening screws, and the following are several commonly used materials for you:
steel
Carbon steel:
Composition characteristics: mainly composed of iron and carbon, carbon content is generally between 0.05%-2.11%. According to the different carbon content can be divided into low carbon steel (carbon content < 0.25%), medium carbon steel (carbon content 0.25%-0.6%) and high carbon steel (carbon content > 0.6%).
Performance characteristics: low carbon steel has good toughness and plasticity, easy to process molding, but the strength is relatively low; Medium carbon steel has moderate strength and toughness, and its mechanical properties can be improved after heat treatment. High carbon steel has high hardness, good wear resistance, but poor toughness. In the manufacture of lengthening screws, low carbon steel is often used in ordinary occasions with low strength requirements, such as some simple screws for indoor furniture assembly. Medium carbon steel can be used for the fixing of general mechanical parts and can withstand a certain load.
Cost advantage: Carbon steel is a relatively common and low-cost material, which makes it widely used in a large number of cost-sensitive application scenarios, and can effectively control production costs while meeting basic performance requirements.
Alloy steel:
Composition characteristics: On the basis of carbon steel added one or more alloying elements, such as chromium, manganese, nickel, molybdenum and so on. The addition of these alloying elements can significantly change the properties of steel.
Performance characteristics: By adding different alloying elements and adjusting its content, the alloy steel can have higher strength, hardness, toughness, wear resistance and corrosion resistance. For example, the addition of chromium can improve the corrosion resistance of steel, and the addition of manganese can enhance the strength and toughness of steel. Lengthening screws made of alloy steel are often used in occasions with high mechanical properties, such as parts fixing of automobile engines, industrial machinery and equipment, and can work reliably in complex stress environments.
Application: Due to its excellent comprehensive properties, alloy steel plays an important role in the manufacturing of lengthening screws in aerospace, automotive manufacturing, construction machinery and many other fields, ensuring that the tight connection of key parts can withstand high strength loads and complex working environments.
Stainless steel
Austenitic stainless steel:
Composition characteristics: The main alloying elements are chromium (Cr) and nickel (Ni), the chromium content is generally about 18%, and the nickel content is about 8%-10%. Common models such as 304 stainless steel, 304L stainless steel, etc.
Performance characteristics: Has good corrosion resistance, can be stable in a variety of corrosive environments, such as in general humid environment, weak acid and alkali environment. At the same time, the toughness and plasticity of austenitic stainless steel is also good, and it is easy to process into various shapes of extension screws. Its appearance is bright and beautiful, and it is often used in occasions where there are certain requirements for beauty and need to have certain corrosion resistance, such as screw fixing in kitchen appliances, bathroom facilities and other products.
Application scenario: It is widely used in the fastening connection of daily necessities and some industrial equipment that has certain resistance to corrosion environment, which can ensure the reliability of the connection and meet the appearance requirements.
Martensitic stainless steel:
Composition characteristics: Chromium content is high, generally between 12%-18%, carbon content is also relatively high, usually between 0.1%-1.2%. Common models are 410 stainless steel, 420 stainless steel, etc.
Performance characteristics: Martensitic stainless steel can obtain higher hardness and strength after heat treatment, but its corrosion resistance is worse than that of austenitic stainless steel. It is suitable for high strength requirements but the corrosion environment is relatively not so bad occasions, such as some tool manufacturing (can be used as a tool handle screw, etc.), both to provide enough fastening force, but also to a certain extent to resist corrosion during use.
Titanium alloy
Composition characteristics: Based on titanium (Ti), adding other alloying elements such as aluminum (Al), vanadium (V), molybdenum (Mo) and so on. Different alloying elements and contents will give different properties of titanium alloys.
Performance characteristics: Titanium alloy has many excellent properties, the first is its high strength to weight ratio, that is, it has a high strength at the same time, the density is relatively low, the strength (strength to density ratio) is high, which makes the lengthening screw made of titanium alloy in the case of strict weight restrictions (such as aerospace equipment) is very advantageous. Secondly, titanium alloy has good corrosion resistance and can work stably in a variety of harsh corrosion environments (such as Marine environment, chemical environment, etc.) for a long time. In addition, titanium alloys also have good biocompatibility and are also used in the medical field (such as implantable medical device fixing screws, etc.).
Application field: Due to its unique performance advantages, titanium alloy is widely used in the manufacturing of lengthening screws in aerospace, medical, high-end sports equipment and other fields, which can meet the requirements of high performance, high reliability, light weight and special environmental adaptability in these fields.
In short, the lengthening screws of different manufacturing materials are suitable for different application scenarios, and the actual selection needs to be comprehensively considered according to the specific use requirements, environmental conditions, cost and other factors.
# Lengthening screws # Lengthening bolts # Lengthening outer hex screws # Lengthening inner hex screws # fasteners
