SAE 52100 Steel Round Bar Chemical Composition
The main chemical composition of SAE 52100 bearing round steel includes a high proportion of carbon (C) and chromium (Cr), while also containing appropriate amounts of elements such as manganese (Mn), silicon (Si), phosphorus (P) and sulfur (S). This specific chemical composition makes it have excellent mechanical properties and heat treatment characteristics.
| Stand | C(%) | Mn(%) | P(%) | S(%) | Si(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) | Al(%) | O(%) |
| GB/T 18254-2002 | 0.95-1.05 | 0.25-0.45 | Max 0.025 | Max 0.025 | 0.15-0.35 | 1.40-1.65 | Max 0.10 | Max 0.30 | Max 0.25 | / | / |
| ASTM A295/A295M-05 | 0.93-1.05 | 0.25-0.45 | Max 0.025 | Max 0.015 | 0.15-0.35 | 1.35-1.60 | Max 0.10 | Max 0.25 | Max 0.30 | Max 0.05 | Max 0.0015 |
| EN ISO 683/17-1999 | 0.93-1.05 | 0.25-0.45 | Max 0.025 | Max 0.015 | 0.15-0.35 | 1.35-1.60 | Max 0.10 | / | Max 0.30 | Max 0.05 | Max 0.0015 |
| JIS G4805-2008 | 0.95-1.10 | Max 0.50 | Max 0.025 | Max 0.025 | 0.15-0.35 | 1.30-1.60 | Max 0.08 | / | / | / | / |
| ISO 683/17-1999 | 0.93-1.05 | 0.25-0.45 | Max 0.025 | Max 0.015 | 0.15-0.35 | 1.35-1.60 | Max 0.10 | / | Max 0.30 | Max 0.05 | Max 0.0015 |
Performance Of Bearing Round Steel
1. High contact fatigue strength
Bearing round steel has extremely high contact fatigue strength, which is the key index to measure the resistance of bearing material to fatigue damage under rolling contact stress. High contact fatigue strength means that the bearing can maintain stable performance and long service life under long time and high load operation.
2. Good wear resistance
Wear resistance is another important property. In the process of rolling friction, it can effectively resist wear and reduce surface damage, thus extending the service life of bearings. This property is mainly due to the uniform distribution of hard carbide particles in the steel. It can enhance the wear resistance of the material.
3. Excellent heat treatment performance
It has excellent heat treatment properties, including hardenability and tempering stability. Hardenability ensures that the bearing steel can obtain uniform structure and properties during quenching. The tempering stability ensures that in the tempering process, the bearing steel can maintain high hardness and strength. And it has good toughness.
4. High elastic limit of bearing round steel
This steel product has a high elastic limit. This enables it to quickly recover its original shape when subjected to external forces, reducing the risk of failure due to deformation. This performance is essential to ensure the stability and reliability of bearings in complex stress environments.
5. Good corrosion resistance and oxidation resistance
Although it is mainly used in mechanical parts, good corrosion resistance and oxidation resistance are also its performance characteristics that cannot be ignored. These properties help to reduce the corrosion and oxidation of bearings in harsh environments such as humidity and high temperature, and extend their service life.
6. Low crack sensitivity
It exhibits low crack sensitivity during machining and heat treatment. This helps reduce the risk of failure due to crack propagation. The low crack sensitivity makes the bearing steel easier to process and shape in the manufacturing process, and improves the production efficiency.
Application Field Of Bearing Round Steel
1. Bearing manufacturing: SAE 52100 bearing round steel is an ideal material for manufacturing bearings, including rolling and sliding bearings. Its high strength and high wear resistance make the bearing can withstand high load and high speed operation. And it has good friction resistance.
2. Auto parts: The material is also widely used in the manufacturing of auto parts, such as engine parts, transmission system parts, etc. Its high strength and wear resistance allow components to withstand high loads and harsh working environments while maintaining a long service life.
3. Mechanical equipment: In mechanical equipment manufacturing, SAE 52100 bearing steel is often used to manufacture various transmission devices, gears, shafts and other key components. Its excellent mechanical properties and wear resistance enable these parts to maintain stable working conditions under high load and high speed operation.
4. Aerospace: In the aerospace sector, it can also manufacture some key components such as engine bearings, transmissions, and others. Their high strength, hardness and wear resistance enable these components to withstand extreme working environments and high temperature and pressure conditions.
In general, this bearing steel has been widely used in many fields due to its excellent mechanical properties and wear resistance. It plays an important role in bearing manufacturing, auto parts, mechanical equipment, aerospace and other fields.
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