AISI 1040
It is a medium-carbon steel renowned for its balance of strength, toughness, and machinability.
Descriptions
1. Chemical Composition
AISI 1040 complies with the following chemical composition (weight %):
| Element | Content (%) |
| Carbon (C) | 0.37-0.44 |
| Manganese (Mn) | 0.60-0.90 |
| Phosphorus (P) | ≤0.040 |
| Sulfur (S) | ≤0.050 |
| Silicon (Si) | 0.15-0.35 |
| Iron (Fe) | Balance |
2. Mechanical Properties
Mechanical properties vary with heat treatment. Typical values for hot-forged and heat-treated AISI 1040:
| Property | Value |
| Tensile Strength | 380-550 MPa(55-80 ksi) |
| Yield Strength | 210-350 MPa(30-51 ksi) |
| Elongation (50mm) | 15-25% |
| Hardness | 110-170 HB (Brinell) |
| Impact Energy (Charpy V-notch) | 20-40 J(15-30 ft-1b) at 20°C |
3. Key Advantages
Excellent Weldability: Suitable for on-site repairs and modifications.
Cost-Effective: Lower material and processing costs compared to alloy steels.
Machinability: Easy to machine into complex shapes with standard tools.
Ductility: Resists fracture under bending or forming operations.
4. Limitations
Low Strength: Not suitable for high-stress or dynamic-load applications (e.g., drill collars, crusher jaws).
Poor Wear Resistance: Requires surface treatments (e.g., carburizing) for abrasive environments.
Corrosion Susceptibility: Needs coatings (galvanizing, painting) for outdoor or humid conditions.
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CONTACT US
Address
B-2007,Chuanmei Building,Taishan Street,Taian City，Shandong, China
Call Us
+86 0538 6368027
Email Address
Sales@tiptopforging.com
Standards & Certifications
ASME B16.5 (Pipe Flanges and Flanged Fittings).
API 6A (Limited to non-critical components).
Applications
Drill Collars and Tool Joints:
Moderate-depth drilling components requiring torsional strength.
Valve Stems and Actuators:
Pressure-retaining parts for low-to-medium pressure systems.
Crankshafts and Connecting Rods:
High-strength forgings for engines and transmissions.
Gears and Axles:
Case-hardened components for drivetrains and differential systems.
Hydraulic Cylinder Rods:
Wear-resistant rods for construction and mining equipment.
Forged Shafts and Spindles:
Used in industrial pumps, compressors, and conveyor systems.
