1. Key Properties
AISI/SAE 5140 Round Bars are medium-carbon alloy steels with good strength, toughness, and wear resistance. Known for their ability to maintain toughness even at elevated temperatures, 5140 steel is widely used in parts that require high strength and good fatigue resistance. After heat treatment, it offers an excellent combination of hardness and durability, making it suitable for applications in automotive, industrial machinery, and other demanding environments.
2. Applications/Industries
Automotive (e.g., gears, axles, crankshafts)
Industrial Machinery (e.g., shafts, spindles)
Bearings
Heavy Equipment
Oil & Gas Equipment
Power Transmission Components
3. Certifications/Standards
Meets ASTM A29 standards
Meets SAE 5140 specifications
ISO 9001 certified
4. Chemical Composition
Carbon (C): 0.38–0.43%
Manganese (Mn): 0.60–0.90%
Chromium (Cr): 0.80–1.10%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.04%
5. Technical Specifications
Yield Strength: 650–850 MPa (depending on heat treatment)
Tensile Strength: 900–1100 MPa
Hardness: 200–250 HB (Brinell Hardness)