AISI 52100 Carbon Bearing Steel Alloy Steel Round Bar Flat

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Black/Milled/Machined
• Model NO.: round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm 2mm-25mm
• Trademark: Smooth
• Origin: China
• HS Code: 8455300000
• Production Capacity: 5000 Ton/Year

Product Description

AISI 52100 Carbon steel
52100 steel, also known as AISI 52100 or SAE 52100, is a high carbon chromium alloy steel commonly used in the production of ball bearings, roller bearings, and other high-wear applications. 

Chemical Composition:
·Carbon (C): 0.95-1.10%
·Chromium (Cr): 1.30-1.60%
·Manganese (Mn): 0.25-0.45%
·Silicon (Si): 0.15-0.35%
·Phosphorus (P): ≤ 0.025%
·Sulfur (S): ≤ 0.025%

Properties:
·High hardness: 52100 steel can be hardened to achieve a high level of hardness, making it suitable for applications requiring excellent wear resistance.
·Good toughness: Despite its high hardness, 52100 steel retains good toughness, allowing it to withstand high loads and impact forces.
·Excellent wear resistance: The combination of high carbon and chromium content contributes to the exceptional wear resistance of 52100 steel, making it ideal for bearing applications where friction and wear are prevalent.
·Moderate machinability: While 52100 steel can be machined, it requires proper heat treatment to achieve desired hardness levels without sacrificing machinability.
·Good dimensional stability: 52100 steel exhibits minimal distortion during heat treatment, allowing for precise manufacturing of components with tight tolerances.
·Tensile Strength: Typically ranging from 725 MPa to 1030 MPa (105,000 psi to 150,000 psi), depending on the heat treatment condition.
·Yield Strength: Generally around 525 MPa (76,000 psi) or higher.
·Elongation: Typically in the range of 10% to 20%, depending on the heat treatment condition.
·Hardness: After proper heat treatment, 52100 steel can achieve hardness levels of HRC 58-65.

Fatigue Resistance:
·52100 steel exhibits good fatigue resistance when properly heat treated. Its high hardness and fine microstructure help prevent fatigue failure under cyclic loading conditions commonly encountered in bearing applications.

Corrosion Resistance:
·While 52100 steel offers excellent wear resistance, it has limited corrosion resistance, especially in corrosive environments containing moisture or aggressive chemicals. Proper lubrication is essential in bearing applications to mitigate corrosion.


Heat Treatment:
·Annealing: Heat 52100 steel to 815-845°C (1500-1550°F), then furnace cool at a rate of 10-20°C (50-68°F) per hour to below 315°C (600°F) before air cooling. This process relieves internal stresses and improves machinability.
·Hardening: Austenitize at 790-845°C (1450-1550°F), then quench in oil or polymer to achieve full hardness.
·Tempering: Reheat hardened steel to 150-200°C (300-400°F) for 1-2 hours, followed by air cooling. This process improves toughness and reduces brittleness.

Applications:
·Bearings: 52100 steel is widely used in the production of ball bearings, roller bearings, thrust bearings, and other types of precision bearings due to its excellent wear resistance and fatigue strength.
·Automotive: It is used in various automotive components such as gears, shafts, and camshafts.
·Aerospace: 52100 steel finds applications in aircraft landing gear components, engine parts, and transmission systems.
·Machinery: It is used in the manufacture of machine tools, cutting tools, and high-wear components in industrial machinery.

Surface Finish:
·The surface finish of components made from 52100 steel is crucial for bearing performance. Grinding, polishing, and honing processes are commonly employed to achieve the required surface roughness and dimensional accuracy.

Environmental Considerations:
·Production processes for 52100 steel may involve the use of energy-intensive heat treatment methods. Manufacturers may implement energy-saving measures and recycling practices to minimize environmental impact.

Quality Assurance:
·Manufacturers of 52100 steel and components made from it adhere to stringent quality control measures to ensure consistency in material properties, dimensional accuracy, and surface finish. Non-destructive testing methods, such as ultrasonic testing and magnetic particle inspection, may be used to detect defects and ensure product integrity.