C55E and C55S are two medium-carbon special steels with slightly different chemical compositions and properties. A detailed analysis and comparison of them is given below:
C55E: Chemical Composition:
Carbon (c): 052 - 0.6%
Silicon (Si): 04%
Manganese (mn): 06 - 0.9%
Nickel (Ni): 04%
Phosphorus (p): 003%
Sulfur (s): 0035%
Chromium (cr): 04%
Molybdenum (Mo): 01%
Performance characteristics: C55E has a medium carbon content and can be heat treated to achieve good strength and hardness.
The manganese content helps to improve strength and wear resistance.
Suitable for applications that require high strength and hardness.
C55S: Chemical Composition:
Carbon (c): 052 - 0.6%
Silicon (Si): 015 - 0.35%
Manganese (mn): 06 - 0.9%
Nickel (Ni): 004%
Phosphorus (p): 0025%
Sulfur (s): 0025%
Chromium (cr): 04%
Molybdenum (Mo): 01%
Performance characteristics: C55S has a lower sulfur and phosphorus content, which helps to improve processability and weldability.
Ideal for applications requiring moderate carbon content and high strength.
Country Corresponding Grades:
C55E and C55S materials are generally EN 10132 compliant, and their German grades are also typically C55E and C55S. Depending on the standards of different countries and regions, there may be different grades corresponding to these two materials.
Comparison: The main difference between C55E and C55S is the content of sulfur, phosphorus, and silicon. C55S has a lower sulphur and phosphorus content, which helps to improve its processability and weldability, making it more suitable for applications that require better processability.
In terms of mechanical properties, both have similar strength and hardness due to the small difference in chemical composition, and both are suitable for applications that require high strength and hardness.
Overall, the choice between C55E and C55S depends on the specific application requirements, especially in terms of processability and weldability.
Applications: C55E and C55S are mainly used to manufacture mechanical parts, such as shafts, pins, gears, bolts, pins and other transmission components. They are widely used in the manufacture of parts that require high strength and hardness, especially in the fields of automobile manufacturing, mechanical engineering, and construction. Both are versatile special steels that are suitable for a variety of applications.