Neil Metals, based in Kolkata, India, stands out as a top manufacturer and supplier of high-quality Alloy Steel AISI 4145 Bars. These bars are celebrated for their exceptional strength, toughness, and resistance to fatigue. They’re specifically crafted for heavy-duty and high-stress applications, making them perfect for demanding industries like oil & gas, mining, and power generation. Neil Metals is committed to ensuring that each bar adheres to strict quality and dimensional standards, providing tailored solutions, quick delivery, and reliable mechanical performance. With a strong emphasis on durability and precision, Neil Metals caters to both domestic and international markets with their dependable AISI 4145 steel bar products.
Alloy Steel AISI 4145 Bars consist of 0.43–0.48% carbon, 0.70–0.90% manganese, 0.75–1.20% chromium, 0.15–0.35% molybdenum, and 0.65–0.95% nickel, with the remainder being iron. These elements significantly boost hardenability, wear resistance, and impact strength. AISI 4145 bars deliver tensile strength between 850 to 1000 MPa and yield strength around 655 MPa. They also showcase excellent toughness, good ductility, and impressive fatigue resistance. Typically provided in a quenched and tempered state, these bars are ready for heat treatment, which further enhances their mechanical and structural properties for critical engineering applications.
| Dimensions: | ASTM, ASME, DIN, BS, EN, IS, AMS, JIS, IBR & Other International Standards. |
|---|---|
| Standard: | ASTM A689, JIS G4801, DIN 17221, GB/T 18254, ASTM A295, JIS G4805, etc. |
| Alloy Steel AISI 4145 Round Bars Range: | Range – 3.17mm to 350mm dia |
| Alloy Steel AISI 4145 Round Bars Diameter: | 5mm-500mm (Customized size is acceptable) |
| Alloy Steel AISI 4145 Round Bars Length: | 1m-9m or according to the customer’s requirement |
| Type: | Round bar, rod, square bar, flat bar, hexagon bar, angle bar, channel bar, threaded bar |
| Alloy Steel AISI 4145 Round Bars Technique: | Forged/Hot Rolled/Cold Drawn/Peeled |
| Alloy Steel AISI 4145 Round Bars Surface: | bright round bar, pickled round bar, black round bar |
| Package Details: | Standard seaworthy package(wooden boxes package,pvc package, or other package) |
| Export Area: | USA, UAE, Europe, Asia, Middle East, Africa, South America |
| Grade | AISI 4145 | |
|---|---|---|
| Min. | Max | |
| C | 0.43 | 0.49 |
| Cr | 0.80 | 1.10 |
| Si | 0.15 | 0.35 |
| S | – | 0.040 |
| Mn | 0.85 | 1.10 |
| P | – | 0.035 |
| Mo | 0.15 | 0.25 |
| Grade: | AISI 4145 |
|---|---|
| Tensile Strength (ksi) min : | 140 |
| Elongation (% in 50mm) min: | 14 |
| Yield Strength 0.2% Proof (ksi) min: | 120 |
| Hardness: | – |
AISI 4145 Bars and Rods offer high strength, toughness, and wear resistance, making them ideal for heavy-duty applications.
Yes, they can be heat treated to enhance hardness, strength, and overall performance.
These bars and rods are commonly used in the automotive, oil and gas, and heavy machinery industries for parts like gears, shafts, and axles.
| Standard: | AISI 4145 |
|---|---|
| WERKSTOFF NR. | – |
| UNS | G41450 |
Alloy Steel AISI 4145 Bars find extensive use in scenarios that demand high strength, toughness, and resistance to fatigue and wear. In the oil & gas sector, they’re utilized for drill collars, tool joints, and downhole components. The mining industry employs them in heavy-duty equipment and components that face high stress and impact. Power generation and industrial machinery depend on AISI 4145 bars for shafts, gears, and forged parts. Moreover, they’re also used in construction equipment, marine applications, and aerospace components, where robust mechanical performance under extreme conditions is crucial for operational reliability and safety.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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