ASTM 52100 Bearing Steel | 100Cr6 | SUJ2
Products Description ASTM 52100 Bearing Steel, also known as 100Cr6 or SUJ2, is a high-quality alloy steel widely used in the manufacturing of bearings. This type of steel offers excellent mechanical properties, making it ideal for applications that require high strength, durability, and wear...
Description
Products Description
The ASTM 52100 steel is characterized by its high carbon content, which provides hardness and strength. It also contains chromium, which enhances its wear resistance and corrosion resistance. The combination of these elements results in a steel that can withstand heavy loads and harsh operating conditions.
In the production of bearings, ASTM 52100 steel is processed through various techniques to achieve the desired properties. It is typically heat-treated to increase its hardness and toughness. This involves heating the steel to a specific temperature and then quenching it in oil or water to rapidly cool it down. The quenching process locks in the desired microstructure, giving the steel its high strength and wear resistance.
1. Chemical Composition
|
Standard |
Grade |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Cu |
Mo |
|
ASTM A295 |
52100 |
0.93-1.05 |
0.25-0.45 |
0.025 |
0.015 |
0.15-0.35 |
0.25 |
1.35-1.60 |
0.30 |
0.10 |
|
DIN 17230 |
100Cr6/1.3505 |
0.90-1.05 |
0.25-0.45 |
0.030 |
0.025 |
0.15-0.35 |
0.30 |
1.35-1.65 |
0.30 |
– |
|
JIS G4805 |
SUJ2 |
0.95-1.10 |
0.50 |
0.025 |
0.025 |
0.15-0.35 |
– |
1.30-1.60 |
– |
– |
|
BS 970 |
535A99/EN31 |
0.95-1.10 |
0.40-0.70 |
– |
– |
0.10-0.35 |
– |
1.20-1.60 |
– |
– |
2. Mechanical Properties
|
Properties |
Metric |
Imperial |
|
Bulk modulus (typical for steel) |
140 GPa |
20300 ksi |
|
Shear modulus (typical for steel) |
80 GPa |
11600 ksi |
|
Elastic modulus |
190-210 GPa |
27557-30458 ksi |
|
Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
|
Hardness, Brinell |
– |
– |
|
Hardness, Knoop (converted from Rockwell C hardness) |
875 |
875 |
|
Hardness, Rockwell C (quenched in oil from 150°C tempered) |
62 |
62 |
|
Hardness, Rockwell C (quenched in water from 150°C tempered) |
64 |
64 |
|
Hardness, Rockwell C (quenched in oil) |
64 |
64 |
|
Hardness, Rockwell C (quenched in water) |
66 |
66 |
|
Hardness, Vickers (converted from Rockwell C hardness) |
848 |
848 |
|
Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel) |
40 |
40 |
The use of ASTM 52100 bearing steel offers several advantages. Firstly, it provides excellent load-carrying capacity, allowing bearings to support heavy radial and axial loads. Secondly, it has good fatigue resistance, which means it can withstand repeated stress cycles without failure. Additionally, the steel's wear resistance ensures a long service life for the bearings, reducing maintenance and replacement costs.
In conclusion, ASTM 52100 bearing steel, also known as 100Cr6 or SUJ2, is a highly reliable and durable material for the production of bearings. Its excellent mechanical properties, including high strength, wear resistance, and fatigue resistance, make it an ideal choice for applications that demand reliable and long-lasting performance. With proper heat treatment and processing, this steel can provide superior performance and help ensure the smooth operation of various mechanical systems.
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