Carbon Steel vs Stainless Steel
The Advantages of Stainless Steel
Chemical Properties:
Chemical resistance and electrochemical corrosion resistance are the best among steel materials, second only to titanium alloys.
Physical Properties:
heat resistance, high-temperature resistance, low-temperature resistance, and even ultra-low temperature resistance.
Mechanical Properties:
According to different types of stainless steel, the mechanical properties are different. Martensitic stainless steel has high strength and hardness and is suitable for manufacturing corrosion-resistant parts that require high strength and high wear resistance, such as common hydraulic turbines. Shafts, stainless steel tools, stainless steel bearings, etc., austenitic stainless steel has good plasticity, not high strength, but the best corrosion resistance among stainless steel.
It is suitable for occasions that require very corrosion resistance but do not require high mechanical properties, such as some chemical industries. In plants, fertilizer plants, sulfuric acid, and hydrochloric acid manufacturers, equipment materials, etc., of course, it can also be used in military industries such as submarines. Ferritic stainless steel has moderate mechanical properties and low strength, but it is resistant to oxidation and is suitable for various industrial furnaces. Components.
Process Performance:
Austenitic stainless steel has the best process performance. Due to its very good plasticity, it can be processed into various plates, tubes, and other materials. It is also suitable for pressure processing. Martensitic stainless steel has poor process performance due to high hardness.
The Advantages of Carbon Steel
1. Carbon steel can get higher hardness and better wear resistance after heat treatment.
2. The hardness of carbon steel in the annealed state is very moderate, and it also has good machinability.
3. The raw materials of carbon steel are very common, simple, and easy to obtain, and the production cost is relatively low.
The Difference Between Carbon Steel vs Stainless Steel
1. Generally, we see that the density of carbon steel vs stainless steel is different. The density of carbon steel is slightly higher than that of ferritic and martensitic stainless steel, and slightly lower than that of austenitic stainless steel.
2. There is also a difference in electrical resistance between carbon steel and stainless steel. The electrical resistivity is in increasing order of carbon steel, ferritic, martensitic and austenitic stainless steel.
3. Then there is the difference between the linear expansion coefficients of carbon steel and stainless steel. The order of linear expansion coefficients is also similar, with austenitic stainless steel being the highest and carbon steel being the smallest.
4. Finally, the magnetic properties of carbon steel and some stainless steels are different. Carbon steel, ferritic and martensitic stainless steels are magnetic, while austenitic stainless steels are non-magnetic. Will produce magnetism, heat treatment can be used to eliminate this martensite structure and restore its non-magnetic.
