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Smooth AISI 4140 Carbon Steel HB 197 - 241 4140 Low Alloy Steel With High Fatigue Strength
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Smooth AISI 4140 Carbon Steel HB 197 - 241 4140 Low Alloy Steel With High Fatigue Strength
| MOQ: | 100KG |
| Price: | Price is negotiated based on the required specifications and quantity |
| Standard Packaging: | Standard export packaging, or packaging as required |
| Delivery Period: | 5-8 working days, depending on the parameters required for negotiation |
| Payment Method: | Payment Terms: Mainly T/T.. L/C, D/A, D/P, |
| Supply Capacity: | 5000 tons per month |
Detail Information
Place of Origin
China
Brand Name
AISI4140 Alloy
Certification
ISO Certificate
Model Number
AISI4140 Alloy
Name:
AISI 4140 Carbon Steel
Tensile Strength:
655-850 MPa (after Heat Treatment)
Yield Strength:
≥415 MPa
Elongation:
≥20%
Density:
7.85 G/cm³
Hardness:
HB 197-241 (as Annealed)
Weldability:
Fair
Ductility:
Good
Surface Finish:
Smooth
Applications:
Automotive Components, Oil And Gas Tools, Machinery Parts, Tool And Die Manufacturing, Construction Equipment
Highlight:
Smooth AISI 4140 Carbon Steel
,AISI 4140 Low Alloy Steel
,HB 197 4140 Low Alloy Steel
Product Description
Smooth AISI 4140 Carbon Steel HB 197 - 241 4140 Low Alloy Steel With High Fatigue Strength
Product Specifications
| Attribute | Value |
|---|---|
| Name | AISI 4140 Carbon Steel |
| Tensile Strength | 655-850 MPa (after heat treatment) |
| Yield Strength | ≥415 MPa |
| Elongation | ≥20% |
| Density | 7.85 g/cm³ |
| Hardness | HB 197-241 (as annealed) |
| Weldability | Fair |
| Ductility | Good |
| Surface Finish | Smooth |
| Applications | Automotive components, oil and gas tools, machinery parts, tool and die manufacturing, construction equipment |
Product Overview
AISI 4140 Alloy is a versatile low-alloy steel known for high strength, toughness, and wear resistance. This widely used alloy offers an excellent balance of mechanical properties and ease of heat treatment, making it ideal for applications requiring high fatigue strength, impact resistance, and good machinability.
Chemical Composition
- Carbon (C): 0.38-0.43% - Provides optimal strength-to-toughness balance for effective heat treatment
- Manganese (Mn): 0.75-1.00% - Enhances hardenability and tensile strength
- Chromium (Cr): 0.80-1.10% - Increases corrosion resistance, hardness, and wear resistance
- Molybdenum (Mo): 0.15-0.25% - Improves high-temperature strength and hardenability
- Silicon (Si): 0.15-0.35% - Contributes to overall strength and deoxidation
- Phosphorus (P): ≤0.035% - Maintains toughness and reduces brittleness
- Sulfur (S): ≤0.040% - Minimizes inclusions for improved machinability
Mechanical Properties
- Tensile Strength: 655-850 MPa (after heat treatment) - Withstands heavy loads and stress
- Yield Strength: ≥415 MPa - Resists permanent deformation under stress
- Elongation: ≥20% - Offers excellent formability without cracking
- Density: 7.85 g/cm³ - Provides balanced strength-to-weight ratio
- Hardness: HB 197-241 (as annealed) - Base hardness suitable for further treatment
- Impact Toughness: High resistance to dynamic and cyclic loading
Heat Treatment Options
- Annealing: Improves machinability and restores ductility
- Normalizing: Refines grain structure for enhanced strength
- Quenching and Tempering: Increases hardness for high-stress applications
- Carburizing: Creates wear-resistant surface with tough core
Industrial Applications
- Automotive: Gears, crankshafts, connecting rods requiring fatigue resistance
- Oil & Gas: Downhole tools, drill collars, pipe joints needing toughness
- Machinery: Shafts, axles, bolts under heavy cyclic stress
- Tool & Die: High-strength tools, dies, molds demanding wear resistance
- Construction: Heavy-duty equipment requiring impact resistance
Material Summary
AISI 4140 Alloy is a premium low-alloy steel offering exceptional strength, toughness, and wear resistance. Its adaptable chemical composition allows for various heat treatments, making it suitable for demanding applications across automotive, oil and gas, machinery, tool manufacturing, and construction industries. The material's combination of high fatigue strength, impact resistance, and machinability makes it a reliable choice for critical engineering components.
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