Low alloy steel with remarkable strength and durability is AISI 4330. In the fabrication of demanding products like turbine blades, gears, and airplane parts, AISI 4330 is frequently utilized. Everything you need to know about AISI 4330 Alloy Steel (UNS J24045) will be covered in this blog post, including its makeup, physical and mechanical characteristics, ability to withstand corrosion, heat treatment, machining, and welding.
- AISI 4330 Alloy Steel Composition:
The components of AISI 4330 Alloy Steel (UNS J24045) include silicon, carbon, manganese, chromium, nickel, and molybdenum. Additionally, it contains trace levels of copper, phosphorus, and sulfur. These components work together to produce AISI 4330 Alloy Steel special qualities like high strength, toughness, and resistance to deterioration.
- 4330 Steel Applications
- AISI 4330V is a Nickel Chrome Molybdenum (NiCrMo) hardened and tempered high strength alloy steel for applications in the oil and gas industry. It is typically used for oil tools and drilling jars due to its combination of high strength and exceptional impact properties.
| Element | Content (%) |
| Iron, Fe | 95.3-98.1 |
| Nickel, Ni | 1.0-1.50 |
| Manganese, Mn | ≤ 1.0 |
| Silicon, Si | ≤ 0.80 |
| Chromium, Cr | 0.40-0.60 |
| Molybdenum, Mo | 0.30-0.50 |
| Carbon, C | 0.20-0.30 |
- Mechanical qualities of AISI 4330 Alloy Steel:
AISI 4330 Alloy Steel (UNS J24045) has exceptional mechanical qualities that make it perfect for demanding applications. Its hardness is 240 HB, and its tensile strength is 206,000 psi. Its yield strength is 167,000 psi. AISI 4330 Alloy Steel is the perfect choice for high strength and durability applications because of its mechanical characteristics.
| Properties | Metric | Imperial |
| Tensile strength | ≥ 860 MPa | ≥ 125000 psi |
| Yield strength | ≥ 690 MPa | ≥ 100000 psi |
| Elongation at break (In 50 mm) | ≥ 15.0 % | ≥ 15.0 % |
| Hardness, Brinell | 285 | 285 |
- Physical characteristics of AISI 4330 Alloy Steel:
AISI 4330 Alloy Steel (UNS J24045) has a melting point of 1427°C (2600°F) and a density of 7.85 g/cm³. Moreover, it has superior thermal conductivity and is non-magnetic. Because of its physical characteristics, AISI 4330 Alloy Steel is an adaptable material for a range of uses.
| Properties | Metric | Imperial |
| Melting point | 1427°C | 2600°F |
- Equivalent of Alloy Steel AISI 4330
- Uses for AISI 4330 Alloy Steel
The UNS J24045 alloy steel AISI 4330 has a wide range of uses. It is frequently used for items including aircraft structural parts, shafts, gears, fasteners, and transmission components in the oil and gas, aerospace, and automotive industries. Because of its superior fatigue qualities and high strength-to-weight ratio, it is also commonly utilized in construction. It is resilient in the face of challenging environmental conditions because of its resistance to corrosion.
- AISI 4330 Alloy Steel Corrosion Resistance:
According to UNS J24045, AISI 4330 Alloy Steel is not a material that resists corrosion. To increase its resistance to corrosion, it might be coated. Coatings like electroless nickel and chrome plating can greatly improve AISI 4330 Alloy Steel’s ability to withstand corrosion.
- Heat Treatment for AISI 4330 Alloy Steel:
Heat treatment is a method for enhancing the mechanical properties of AISI 4330 Alloy Steel (UNS J24045). The two most popular heat treatments for AISI 4330 Alloy Steel are quench and tempering. In this procedure, the steel is heated to a predetermined temperature, held there, and then quickly cooled. The AISI 4330 Alloy Steel’s strength and hardness can be considerably increased by this procedure.
- Machining AISI 4330 Alloy Steel:
Because of its extreme strength and durability, AISI 4330 Alloy Steel (UNS J24045) can be difficult to mill. Nonetheless, high-speed steel or carbide cutting instruments can be used to mill it. Using the right cutting fluids is crucial to avoiding overheating and minimizing tool wear.
- Welding AISI 4330 Alloy Steel:
Gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) are two methods of welding that can be used to join AISI 4330 Alloy Steel (UNS J24045). To avoid breaking, the steel must be preheated before welding. In order to avoid deformation, proper cooling and heat treatment after welding are also essential.