Description
Comprehensive Guide to SUJ5 Steel: Composition, Equivalent Grades, and Applications
What is SUJ5 Steel?
SUJ5 steel is a high-carbon chromium alloy steel commonly used for applications requiring high hardness, wear resistance, and durability. It is particularly noted for its use in manufacturing bearings and other high-stress components due to its excellent mechanical properties and performance under load.
Chemical Composition of SUJ5 Steel
SUJ5 steel has a specific chemical composition that contributes to its desirable properties. Here is the typical composition of SUJ5 steel:
- Carbon (C): 0.50 – 0.60%
- Chromium (Cr): 0.80 – 1.10%
- Manganese (Mn): 0.30 – 0.60%
- Silicon (Si): 0.10 – 0.35%
- Phosphorus (P): ≤ 0.025%
- Sulfur (S): ≤ 0.025%
These elements work together to create a steel that offers high strength and wear resistance, making it suitable for demanding applications.
Equivalent Grades of SUJ5 Steel
SUJ5 steel is recognized internationally and has several equivalent grades in different standards. Here’s a comparison of its equivalents:
| Standard | SUJ5 Equivalent | Description |
|---|---|---|
| DIN | 100Cr6 | DIN standard for high-carbon chromium steel. |
| AISI | 52100 | American Iron and Steel Institute equivalent. |
| JIS | SUJ5 | Japanese Industrial Standards specification. |
| BS | 52100 | British Standard equivalent with similar properties. |
| ISO | 100Cr6 | ISO standard with comparable mechanical properties. |
Applications of SUJ5 Steel
SUJ5 steel’s properties make it ideal for a range of high-performance applications. Common uses include:
| Application | Description | Benefits |
|---|---|---|
| Bearings | Used in the production of high-quality ball and roller bearings for machinery and automotive parts. | High wear resistance and durability. |
| Gears | Employed in the manufacturing of gears that require high strength and hardness. | Excellent strength and load-bearing capacity. |
| Automotive Components | Components like camshafts and crankshafts in vehicles. | High fatigue strength and reliability. |
| Industrial Machinery | Parts such as shafts and rollers in industrial machines. | Superior performance under high stress. |
| Cutting Tools | Manufacturing of cutting tools that need to maintain sharpness and resist deformation. | High hardness and edge retention. |
Properties of SUJ5 Steel
- Hardness: SUJ5 steel can achieve high hardness levels, generally in the range of 60 HRC (Rockwell Hardness Scale) after appropriate heat treatment.
- Tensile Strength: Demonstrates high tensile strength, making it suitable for components that experience significant stress.
- Wear Resistance: Offers excellent wear resistance due to its high carbon and chromium content.
- Fatigue Resistance: Known for its good fatigue resistance, which is crucial for applications involving cyclic loading.
Heat Treatment of SUJ5 Steel
To optimize the performance of SUJ5 steel, precise heat treatment processes are employed:
- Austenitizing: Heating the steel to a temperature where it forms austenite, typically around 820°C – 860°C (1508°F – 1580°F).
- Quenching: Rapidly cooling the steel in oil or water to transform the austenite into martensite.
- Tempering: Reheating the steel to a lower temperature to relieve stresses and achieve the desired hardness and toughness.
Supply Cities:
Mumbai Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Visakhapatnam, Kochi, Kerala, Hubli-Dharwad, Karnataka, Ghaziabad Kolkata.
