What is the best material for a screwdriver, and what material is durable for a screwdriver

In general, *** screwdriver.

The cutter heads are made of spring steel with relatively high hardness.

done. The basic criterion is that it is hard but not brittle, and hard and tough. If the opening of the screw head becomes bald and slippery, you can hit the screwdriver with a hammer at this time, and the groove of the screw is deeper, so that the screw can be unscrewed, and at this time, you must ensure that the screwdriver is unscathed.

Screwdrivers are often used to pry things in life, so at this time, the screwdriver is required to have a certain toughness and not bend or bend. In general, it is desirable that the hardness of the screwdriver head is greater than HRC60 and that it is not easy to rust. If it is easy to rust, no matter how good a screwdriver is, it will no longer work.

1- Chromium-molybdenum steel.

cr-mo)

The impact resistance of this steel is very good, the hardness and toughness are good, and it is generally the material for making top screwdrivers and small hex wrenches, which is an alloy of chromium, molybdenum, iron and carbon, but the material is relatively expensive.

2-Chromium vanadium steel (CR-V).

This material has good strength and toughness, making it the ideal material of choice for wrenches, screwdrivers, etc. It is chromium and vanadium.

The alloy, which is not so expensive, is a universal material for screwdrivers in life.

3- Carbon steel (CS).

Carbon steel is defined as the mass fraction of carbon without the addition of other specific elements.

Smaller than a class of steel, the advantage is high hardness, high strength, the disadvantage is poor toughness. This steel is not suitable for use as a screwdriver, but it is widely used as a general purpose tool material.

4-S2 tool steel.

This alloy is an excellent type of impact-resistant steel used to make high-hardness Allen wrenches.

screwdrivers, etc. Tools made of this steel are heat-treated to have a sufficiently high hardness. It has good wear resistance, and has a certain strength and toughness. However, in the actual selection and application of screwdrivers, it is not as good as the use of chrome-vanadium steel.

The bits of high-quality screwdrivers are made of spring steel, which is relatively hard. A good screwdriver should be hard but not brittle, hard and tough. When the opening of the screw head becomes bald and slips, you can use a hammer to hit the screwdriver, and the groove of the screw is deeper, so that the screw can be unscrewed, and the screwdriver should be unscathed; Screwdrivers are often used to pry things, which requires a certain toughness to not bend or bend.

In general, it is desirable that the hardness of the screwdriver head is greater than HRC60 and is not easy to rust.

The degree is relatively high made of spring steel. A good screwdriver should be hard but not brittle, hard and tough.

The higher the carbon content, the higher the strength, and the lower the plasticity (toughness). 45 carbon steel is a kind of high-quality carbon steel (low phosphorus and sulfur content), which is widely used in industrial materials. Chromium steel vanadium :

CR-V chromium vanadium steel is a plain alloy tool steel with chromium (CR) and vanadium (V) alloy elements, and its strength and toughness are better than those of steel carbon, which is suitable as an ideal material for high-quality tools. For example, chrome-molybdenum steel such as hands, sockets, screw wires, etc.: Cr-Mo is an alloy of chromium (Cr), molybdenum (Mo), iron (Fe) and carbon (C), which has excellent impact resistance, strong degree and toughness, and is suitable for chromium and vanadium steel.

It is suitable for making screws and other knives. S2 Tool Steel Yes. Carbon (C), Silicon (Si), Manganese X02