Which is better, mild steel or medium carbon steel

It is not possible to say which is good and which is not good, but it is necessary to analyze the specific problems according to the service situation of the workpiece.

Determine which material to use.

Mild steel

It is a carbon steel with a lower carbon content.

Because of its low strength, low hardness and softness, it is also known as mild steel. It includes most of the ordinary carbon structural steel and some high-quality carbon structural steel, most of which are used for engineering structural parts without heat treatment, and some are used for mechanical parts that require wear resistance after carburizing and other heat treatments.

The annealed structure of mild steel is ferrite.

and a small amount of pearlite.

Its strength and hardness are low, and its plasticity and toughness are better. Therefore, its cold formability is good, and it can be cold formed by crimping, bending, stamping and other methods. This steel also has good weldability.

Steel with carbon content from low carbon is easy to accept a variety of processing such as forging, welding and cutting, and is commonly used in the manufacture of chains, rivets, bolts, shafts, etc.

Medium carbon steel refers to carbon steel with carbon content, which has good thermal processing and cutting performance, and poor welding performance.

Medium carbon steel has good hot working and cutting performance, but poor welding performance. The strength and hardness are higher than those of mild steel, while the plasticity and toughness are lower than those of mild steel. It can be used directly without heat treatment, hot rolled and cold drawn materials, or after heat treatment.

The quenched and tempered medium carbon steel has good comprehensive mechanical properties.

The highest hardness that can be achieved is about HRC55 (HB538) and B is 600 1100MPa. Therefore, among the various uses at medium strength levels, medium carbon steel is the most widely used, in addition to being a building material, it is also widely used in the manufacture of various mechanical parts.

Your question is questionable, not which is better, depending on where it is used and what it is used for. Comparatively speaking, low carbon steel has better ductility and welding properties, while medium carbon steel has better hardness, stiffness and strength.

Medium carbon steel has higher strength and hardness, but less ductility: which is better depends on what kind of properties you need.

Medium carbon steel has good bendability, and low carbon steel has high hardness.

Compared to carbon steel and stainless steel, stainless steel is better.

Generally speaking, carbon steel does not have special alloying elements added, while stainless steel adds a high alloy content in order to prevent rust. These two steels are used differently and cannot be compared. Carbon steel is generally stronger than stainless steel, but it rusts easily.

Characteristics of stainless steel: The thin and dense chromium-rich oxide film on the surface of stainless steel makes stainless steel water pipes have good corrosion resistance in all water quality, including soft water, even when used underground.

Stainless steel can work safely for a long time at temperatures of -270°C and 400°C, and there is no harm in both high and low temperatures. Carbon steel is an iron-carbon alloy with a carbon content of less than WC. Also called carbon steel. It also contains small amounts of silicon, manganese, sulfur, and phosphorus.

Differences

1. The corrosion resistance is different

Although there are iron elements in carbon steel and stainless steel, and iron is relatively easy to oxidize, so the corrosion resistance of iron welding materials is relatively poor, but in addition to iron, chromium is also added to stainless steel, which can effectively increase the corrosion resistance of the material, so in contrast, the corrosion resistance of stainless steel is stronger.

2. Ductility is different

Both carbon steel and stainless steel have a certain degree of ductility, but because stainless steel contains a large amount of nickel elements, which can effectively improve the ductility of the product, the ductility of stainless steel will also be better than carbon steel. In addition, for ductility, it refers to the degree to which the material can be pressed, and the better the ductility, the thinner the material can be pressed.

The differences between high-carbon steel and low-carbon steel are as follows:1. Toughness difference: the annealing structure of low carbon steel is ferrite and a small amount of pearlite, which has low strength and hardness, and good plasticity and toughness.

Therefore, its cold formability is good, and it can be cold formed by crimping, bending, stamping and other methods. After proper heat treatment or cold drawing hardening, high-carbon steel has high strength and hardness, high elastic limit and fatigue limit, and the cutting performance is acceptable, but the welding performance and cold plastic deformation ability are poor.

2. Application differences: low carbon steel has good weldability. Steel with carbon content from low carbon is easy to accept various processing such as forging, welding and cutting, and is commonly used in the manufacture of chains, rivets, bolts, shafts, etc.

High-carbon steel is mainly used to make springs and wear-resistant parts. Carbon tool steel is a high-carbon steel that basically does not add alloying elements, and it is also a steel grade with low cost, good cold and hot workability and a wide range of use in tool steel.

3. Different carbon content: low carbon steel is carbon steel with lower carbon content, which has lower strength and hardness, and better plasticity and toughness; High-carbon steel is often called tool steel, with carbon content from to, with high strength and hardness, high elastic limit and fatigue limit, and acceptable cutting performance, but poor welding performance and cold plastic deformation ability.

Both carbon steel and steel are good.

Carbon steel is more wear-resistant and corrosion-resistant, but it is lighter and less strong than steel. Steel is stronger and more durable, but it is more susceptible to corrosion.

Ordinary carbon steel is the abbreviation of ordinary carbon structural steel. The carbon content is less than that, and less than is the most commonly used. It is a mild steel, and each metal grade indicates the lowest yield point of the steel grade when the thickness is less than 16mm.

Compared to high-quality carbon steel, there are wider restrictions on carbon content, performance range, and phosphorus, sulfur, and other residual element content. According to the guarantee conditions of delivery, China and some countries divide ordinary carbon steel into three categories: Class A steel (Class A steel), which only guarantees mechanical properties and does not guarantee chemical composition, and Class B steel (Class B steel), which only guarantees chemical composition and does not guarantee mechanical properties.

Special steel (C steel) not only guarantees the chemical composition, but also ensures the mechanical properties. Special steels are often used in the manufacture of more important structural parts.

Use. 1. Low carbon steel is used in the production of various industries.

2. Consumers or all walks of life can find low carbon steel in imperial and metric sizes that meet different requirements.

3. Steel with lower carbon content has higher crack resistance, swims and maintains ductility that is not affected by temperature.

4. Steel with relatively low carbon content is easy to crack or break under pressure, but low carbon steel will only bend and not crack.

5. Mild steel contains about 40 points of carbon.

6. The carbon content of each represents a point.

7. Because the low carbon steel contains inseparable components, it can form different plates, sheets and tubes. <>